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RICE IN KARNATAKA
Status Paper on Rice in Karnataka
M. P. Rajanna
Rice Breeder and Head,
AICRP (Rice), Zonal Agricultural Research Station,
V.C. Farm, Mandya
Karnataka, India, Pin 571 405
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RICE IN KARNATAKA
I. Name of the state : Karnataka
II. Introduction
The Karnataka state, a region inhabited predominantly by Kannada speaking people, is
situated between 110 31’ and 18
0 45’ North latitude and 74
0 12’ and 78
0 40’ East longitude and
lies in the west-central part of peninsular India. Its maximum spread from north to south is
about 700 km and from east to west 400 km. It is bound on the north by Maharashtra state, on
the northeast by Goa, on the east by Andhra Pradesh, on the south and southeast by Tamil
Nadu, on the southwest by Kerala with a coastline bordering the Arabian Sea. The state with
geographical area of around 1.91 lakh sq km is the eighth largest in the country. It has a variety
of topographical situations ranging from the coastal plains to gentle slopes and culminating in
the spectacular heights of the Western Ghats.
Elevations in various parts do not vary greatly though the abruptness with which they
change is marked in some parts as between the narrow coastal strip that rarely exceeds a width
of 30 km and the equally narrow Western Ghats immediately adjoining the coastal plains.
Greater part of Karnataka lies between 450 and 900 meters above mean sea level. In
places, however, the elevation reaches over 1,800 meters, in Bababudan (Chandradrona
Parvatha) ranges followed by Kudremukh at 1,892 meters. The general elevation of this table
land is about 600 meters but in central parts it is considerably higher at places between the
Krishna and Cauvery river systems particularly in Chikmagalur, Kodagu and Hassan districts.
The districts of Karnataka are shown in Figure 1.
Karnataka is blessed with abundant water wealth with as many as seven major rivers and
a number of rivulets and streams. The important rivers are Sharavathi, Kali, Nethravathi, Varahi,
Bedthi, Aghansani, Krishna, Ghataprabha, Malaprabha, Bhima, Tungabhadra and Cauvery. These
rivers swell in monsoons and a majority of them take out into mere trickle after the monsoons.
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RICE IN KARNATAKA
Fig 1. Districts of Karnataka
The total catchment area of these river basins is 1, 91,773 sq km and the estimated
average flow is 97,800 M cum. The Krishna and Cauvery river basins together drain as much as
77 per cent of the geographical area of the state.
Groundwater in the state occurs under water table conditions, under the hard rocks
which have become sufficiently porous to hold moderate quantities of ground water. The
groundwater utility estimates reveal that the overall utilization of groundwater in the state was
only 25 per cent or one-forth of the potential.
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III. Zonal Information
a. Climate:
Rainfall and its distribution pattern: The climate of Karnataka is basically tropical and
determined largely by the physiographic and geographic location with respect to the sea and
monsoon. The state enjoys the benefit of two monsoons and hence can well be called the land
of the two seasons, because both the south-west and north-east monsoons account for major
part of the rainfall. A small quantity of rainfall is received during cold and hot weather seasons.
The state receives an average annual rainfall of 1354.7 mm with a minimum of 552.8 mm
and a maximum of 3932.4 mm. The analysis of data over two decades reveals that, of the
average rainfall of the state, 9991.7 mm is received in the south-west monsoon (June to
September), 212.4 mm from the north-east monsoon (October to December), 142.3 mm in hot
weather period (March to May), while, hardly 8.3 mm is received in the cold weather period
(January to February).
In terms of percentage contribution in the four seasons, south-west monsoon
contributes a maximum of 73 per cent, followed by north-east monsoon, hot weather and cold
weather periods accounting for 16, 10 and 1 per cent, respectively.
The distribution of annual and seasonal rainfall over Karnataka state indicates that it is
the highest over the Western Ghats and the lowest in the eastern parts of Chitradurga districts.
The rainfall in the coastal region exceeds 3000 mm, the western ghats including Malnad region
receives an annual rainfall ranging from 4000 to 8000 mm, the northern maidan region receives
from 1500 to 500 mm, decreasing from west to east and the southern maidan receives an
annual rainfall from 2000 mm in the west to around 460 mm in the eastern edge in Chitradurga
district.
Temperature: Temperature is the lowest in January and increases thereafter gradually at
first and rapidly after the middle of February or beginning of March. In the southern maidan
region, the highest temperature occur in April, while, in the northern maidan and coastal area
they occur in May. In January, the mean daily maximum temperature is 310 C in the coastal area
and slightly above 300 C in the northern maidan area except in Bidar district where it is 28 to 29
0
C. Over the western Ghat areas, it is 240
to 270 C. In April, the mean daily maximum
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RICE IN KARNATAKA
temperature is about 320
C in the coastal region and increases as we go north-eastwards in the
northern maidan area to 390
C in Gulbarga-Raichur region and decreases to about 370 C in Bidar
area. Over the rest of the maidan area it is 28 to 320
C.
The highest maximum temperature is in May, which is the warmest month over major
part of the state, reaches 430
C in Gulbarga - Raichur region. It exceeds 400
C in the area north-
east of a line joining Bidar, Gadag and Bellary. It is 350
C to 360
C over the coastal area and 360 C
to 380 C over the southern maidan area. Over the Western Ghats and malnad area, it is 32
0 C to
340 C. Temperature decreases after May, and by July the daily maximum temperature decreases
appreciably. The warmest region in July, is Bellary-Raichur-Gulbarga area where the mean daily
maximum temperature is about 320 C. It decreases to 29
0 C towards Bidar. It is about 28
0 C in
the coastal area and increases north-eastwards to 320
C in Raichur-Gulbarga area. In the
southern maidan the maximum temperature is 260 C to 27
0 C. In the ghats and malnad area, it is
about 20 to 240 C. It is of interest to note that after October, temperature gradually decreases
throughout the state reaching the lowest in early January.
Humidity: The average relative humidity is the highest in the state during July-August
and lowest in March-April. Relative humidity depends not only on the amount of water vapour
in the atmosphere but also on temperature. In general the coastal area, ghats and Malnad areas
are more humid than the Maidan areas. Southern maidan areas are comparatively more humid
than the northern maidan areas. The region having the lowest monthly relative humidity of
about 30 per cent in April-May is that extending from northern Chitradurga and Bellary districts
to Bijapur districts to Bijapur, Raichur and Gulbarga districts. Humidity is as low as 5 to 10 per
cent, and sometimes even less in this area in the afternoon hours in summer. Even in the
southern maidan area, low relative humidity of 10 to 20 per cent may be recorded during the
afternoon in March-April. In July and August very high humidity exceeding 90 per cent occur
over the coastal area, ghats and malnad areas, and 80 to 60 per cent over the rest of the state.
From September onwards, humidity generally decreases gradually upto November and rapidly
thereafter.
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b. Soil type :
Karnataka state represents a wide variety of geological, climatic, vegetational and
physiographic features, which have influenced soil formation and thus given rise to various types
of soils. Accordingly, the different soils have distinct morphological and physic-chemical
properties that have a bearing on plant growth and have influenced the cropping pattern, giving
a unique status to the state. A scientific knowledge of soils is a pre-requisite to understand the
local ecology and useful in planning for agricultural development.
As per the updated soil survey data, the soils of Karnataka have been broadly classified
under nine groups. The characteristics and distribution of these nine soil groups in different
parts of Karnataka are as follows:
1. Shallow Black Soils
These soils are usually encountered on undulating ridges in the Deccan trap region and to
some extent on schist and lime stone upland region of Karnataka, occupying areas in north and
north-west parts of the districts of Belgaum, Bijapur, Gulbarga and Bidar.
These are shallow (less than 23 cm), dark greyish brown, dark brown to dark reddish
browm, usually calcareous, with gravelly clay loam to clay in texture. They are neutral to weakly
alkaline and have moderate to high water holding capacity with high cation exchange capacity
(CEC). The soils are well drained to some-what excessively drained with moderate permeability.
The clay mineral is dominantly montmorillonitic. These soils are classified under the orders
Entisols and inceptisols with sub-orders Orthents and Ochrepts.
Suitable soil and water conservation measures along with adoption of package of
practices are essential to obtain satisfactory crop yields. Care is essential while, developing
these lands for irrigation due to their shallow depth and steep slopes.
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2. Medium Black Soils
These soils usually occur in the Deccan trap, schist, lime stone and shale region of the
state, occupying areas in parts of Bidar, Gulbarga, Bijapur and Belgaum districts and to some
extent on peninsular gneiss area in Raichur, Chitradurga and Dharwad districts.
These soils are moderately deep to very deep (23-90 cm), dark to very dark in greyish
brown, dark reddish brown or black in colour, usually calcareous, cracking, clayey soils. These
are highly moisture retentive, neutral to alkaline, and well supplied with bases. They contain
high percentage of clay dominated by montmorillonitic type of mineral. These are moderately
well drained with slow permeability. Heavy cracking in dry periods, typical wedge shaped blocky
structure and prominent slickensides in the sub-surface horizons are quite common. The soils
are classified under the orders Inceptisols and Vertisols with sub-orders Ochrepts and Usterts.
The soils are fertile and produce good yields when moisture is not limiting but modera -
tely susceptible to erosion.
Adequate soil and water conservation measures along with adoption of package of
practices are essential to obtain sustained high yields. Indiscriminate use of water may lead to
development of salinity, alkalinity and water logging problems.
3. Deep Black Soils
These soils occur in Deccan trap lime stone regions, in parts of Gulbarga, Bijapur and
Belgaum districts and considerable areas in parts of Raichur, Bellary, Dharwad, Chitradurga, and
Mysore districts.
These are very deep (more than 90 cm), dark brown, dark greyish brown to very dark
grey or black in colour. The texture is usually clayey throughout the profile. These are
calcareous and are weakly to strongly alkaline, highly cracking montmorillonitic clayey soils.
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These are highly moisture retentive and moderately well drained to imperfectly drained
with low to very low permeability. A loose, crumb to granular surface mulch, gilgai micro relief,
prominent intersecting slickensides and typical sub-angular to angular blocky structure are
common in these soils. These soils are classified under the order Vertisols with sub-order
Usterts.
These soils are fertile and generally produce good yields when moisture is not a limiting
factor but are slight to moderately susceptible to erosion.
Adequate soil and water conservation measures, appropriate provision of drainage
facilities especially in the low lands and adoption of package of practices are essential to obtain
sustained high yields under rainfed cultivation. Indiscriminate use of water on these soils could
spoil the soil structure and lead to salinity and water logging problems.
4. Red Sandy Soils
These soils occur on undulating landscape on acidic rock viz. Granites and granite
gneisses, occupying areas in parts of Dharwad, Bellary, Chitradurga, Shimoga, Bangalore,
Tumkur, Mandya and Mysore districts of the State.
The soils of this type can further be sub-divided into the following three groups occupying on
distinct topographic sites with varying physicochemical properties.
a) Upland
b) Midland, and
c) Low land soils
These are usually situated on convex ridges with 3-5 per cent gradient or more. The soils are
shallow to moderately deep, reddish brown to dark reddish brown, gravelly loamy sand to sandy
loam on the surface with sandy loam to gravelly sand clay in the sub-surface horizons. They are
neutral to slightly acidic in reaction and low in cation exchange capacity, base saturation and
water holding capacity but well drained with rapid permeability.
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These soils are classified under the orders Entisols, Inceptisols and Alfisols with sub-orders,
Orthents, Ochrepts and Ustalfs.
Though these soils respond well to irrigation, manuring and other management practices,
the yields are very low due to low fertility status, shallow rooting depth and inadequate storage
soil moisture capacity.
Adequate storage soil moisture conservation measures, combined with adequate application
of organic manures to improve soil structure, fertility and water holding capacity are essential to
obtain satisfactory yields under rainfed cultivation.
Soils of Midlands
These soils occur on gently sloping midlands in gneissic complex region. These are deep
to very deep, reddish brown to dark reddish brown, loamy sand to sandy loam or sandy clay
loam on the surface with sandy clay to gravelly clay in the sub-surface horizon with well
developed argillic (clay rich) horizon. They are neutral to acidic in reaction and low to medium in
cation exchange capacity and base saturation with medium to high water holding capacity. The
clay is dominated with Kaolinite and hydrous oxides of iron and aluminium. The soils are well
drained with moderate permeability. These soils are classified under the order Alfisols with sub-
order Ustalfs.
The yields obtained on these soils are generally good when moisture is not limiting. They
also respond well to irrigation, manuring and other management practices. Adequate soil and
moisture conservation measures and adoption of package of practices are recommended to
obtain sustained high yields.
Soils of Low Lands
These are partially deposited soils occurring on very gentle slope to nearly level or flat
valley bottom areas, are deep to very deep, dark brown to very dark brown, sandy loam sandy
clay loamand occasionally clay loam soils on the surface and sandy clay loam to clayey soils in
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the sub-surface horizons. They are neutral to weakly alkaline, non-calcarious to calcarious and
have medium to high cation exchange capacity and base saturation. The water holding capacity
is relatively high. These soils are moderately well drained to poor drainage with moderately low
to low permeability. At places the ground water table is seen within 1.5. to 2.0 meters for a
good part of the year. Patches of saline and alkaline areas also occur in the low lands. These
soils are classified under the order Alfisols and Entisols with sub-orders Ustalfs and Fluvents.
These soils normally respond to irrigation, manuring and other management practices
and generally good yields are obtained on these soils.
Adequate drainage and adoption of recommended package of practices can ensure
sustained yields. In problematic areas like high water table and water logging, encouragement
for digging wells in the command may help in reducing the water table. Also, soil amendments
may be added according to the soil test results to reclaim soils affected by alkalinity.
5. Mixed Red and Black Soils
These soils usually occur on gently undulating plain or complex geological material
comprising of gneisses. This type of soil occupies areas in parts of Bijapur, Dharwad, Belgaum,
Raichur, Bellary and Chitradurga districts.
Usually red soils resemble the red sandy soils of midland region in physic-chemical
properties and black soils resemble the medium and deep black soils in physic-chemical
characteristics. These soils are classified under the orders Alfisols, Vertisols and Entisols with
sub-orders Ustalfs, Usterts and Orthents.
The soils are productive, when moisture is not limiting. Care is essential for developing
these lands for irrigation. Provision of drainage especially in the low lying areas is essential
while, planning for irrigation. Use of good quality irrigation water and its judicious application,
application of liberal quantities of organic manures, and careful management are
recommended.
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The measures suggested for problematic areas in deep black soils are also applicable to
the problematic areas like saline, alkaline and water logged areas under these soils.
6. Red Loamy Soils
These soils occur on hilly to undulating landscape on granites, granitic gneisses and
Dharwad schists, occupying areas as a long strip along the western ghats in the transitional zone
comprising western parts of Belgaum, Uttara Kannada, Shimoga, Chitradurga, Udupi, Mangalore,
Hassan and Kodagu districts and parts of Chitradurga, Tumkur, Kolar and Bangalore districts.
The soils of this region can further be sub-divided into the following three groups
occurring on distinct physiographic position and have varying physico-chemical properties.
a) Upper slops
b) Undulating mid-slopes and
c) Valley plain soils.
Soils of Upper Slopes
These are usually situated on convex ridges and steep side slopes. The soils are shallow
to moderately deep, light grey, yellowish red and strong brown gravelly sandy loam to sandy
loam soils. They are normal to weakly acidic in reaction and low in CEC, base saturation and
water holding capacity. These soils are classified under the orders Entisols and inceptisols with
sub-orders Orthents and Ochrepts. The soils have low fertility status with shallow rooting depth
and low water holding capacity. Care should be taken to develop these lands for irrigation due
to their soil depth, coarse texture and steeper slopes. The soils may be restricted to light
irrigated crops due to high percolation losses. Application of liberal quantities of organic
manure is recommended.
Soils of Undulating Mid Slopes
These soils occur on sleepy to gently sloping undulating to hilly landscape. The soils are
very deep, dark brown to dark red, sandy loam to clay loam on the surface and loam to clay
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loam and at places gravelly sandy clay in the sub-surface horizon, with distinct argillic (clay rich)
horizon. These are neutral to weakly acidic in reaction, low in CEC, base saturation and medium
to high in water holding capacity. These soils are classified under the orders Alfisols and Ultisols
with sub-orders of Ustalfs, Udalfs, Uslults and Udults.
The soils are well drained with moderate permeability. The yields obtained in these
lands are generally good.
Appropriate soil conservation measures and adoption of recommended package of
practices are essential to obtain sustained high yields under rainfed cultivation.
Soils of Valley Plains
These are deposited soils occurring on very gently slope to nearly level of flat valley
bottom areas. These are very deep, very dark grey brown, brown to dark reddish brown, sandy
loam to clay on the surface and usually clay in the sub-surface horizon. They are neutral to
weakly alkaline, usually non-calcareous, and have low to medium CEC and base saturation. The
water holding capacity is generally high. The soils are moderately well drained to poorly drain
with low to moderate permeability. These soils are classified under the orders Alfisols and
Entisols with sub-orders Ustalfs, Udalfs and Fluvents.
The yields obtained in these soils are generally good. The soils normally respond well to
irrigation, manuring and other management practices.
Proper bunding, provision of adequate drainage and adoption of recommended package
of practices are essential for obtaining sustained high yields under rainfed cultivation.
7. Laterite Soils
These soils mainly occur on gently undulating, rolling, plain to hilly topography of
peninsular gneiss and Dharwad schist regions, occupying areas as a long strip along with western
coast in the coastal high rainfall and transitional region comprising major parts of the districts of
Uttara Kannada, Udupi, Mangalore, Kodagu and Western parts of Hassan, Chikkamagalur,
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Shimoga, Dharwad and Belgaum districts; also found in parts of Bangalore, Kolar, Bidar and
Gulbarga districts.
These are deep to very deep, yellowish red to dark red, reddish brown to brown, clay
loam to gravelly sandy loam on the surface and clay loam to gravelly sandy clay or clay in the
sub-surface horizon. They are acidic in reaction, low in CEC, base saturation and water holding
capacity. These are well drained to excessively drain with moderate to moderately rapid
permeability. These soils are classified under the orders Entisols, Ultisols, Alfisols and Oxisols
with sub-orders Orthents, Ustults, Udults, Ustalfs, Udalfs and Ustox.
These soils are fairly resistant to erosion. Due to favourable physical condition of these
soils, sustained and better yields can be obtained on many of these soils by adopting
recommended package of practices and proper soil and agricultural management systems.
8. Laterite Gravelly Soils
These soils occur in patches specially on the convex upland region of the laterite i.e., in
the southern parts of the districts of Udupi and Mangalore, northern parts of Shimoga and
north-eastern parts of Bangalore districts. Other characteristics are similar to laterite soils
described above. These soils are shallow to moderately deep with abundant ferruginous gravels.
These soils are under scrub vegetation and forest cover varying density.
9. Coastal Alluvium
These soils occur on gently sloping to nearly level plains as a narrow strip along the
western coast in the districts of Uttara Kannada, Udupi and Mangalore. They are deposited soils
consisting of washed down materials from the western ghats and by the action of the Arabian
sea.
These are deep to very deep, light grey, pale yellow or brown, sand loamy sand to sandy
loam on the surface, with loamy sand, gravelly sandy loam to clay loam in the sub-surface
horizons. These are acidic in reaction, low in CEC base saturation and water holding capacity
and deficient in the major nutrients. The water table in the low lying areas in usually within 1.0
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to 1.5 metres for most parts of the year. These soils are classified under order Entisols with sub-
orders Aquents, Fluvents and Psamments.
The soils are saline due to low lying and inundation by the sea water.
Adoption of package of practices with salt resistant varieties of crops is recommended.
c. Agro-climatic zones
Based on the rainfall pattern, topography, soil characteristics, climate in general and
cropping patterns, Karnataka state has been divided into ten distinct agro-climatic zones which
serve as focal areas for conducting location specific research (Anonymous 1993). The ten agro-
climatic zones of the state are North-eastern transition zone, North-eastern dry zone, Northern
dry zone, Central dry zone, Eastern dry zone, Southern dry zone, Southern transition zone,
Northern transition zone, Hilly zone and coastal zone. The salient features of these zones are as
follows.
Fig.2 Agro-climatic Zones of Karnataka
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1. North-eastern transition zone: It is a small zone with a total geographical area of 8.74
lakh hectares. It comprises 7 taluks coming under Bidar and Gulbarga district. The annual
rainfall of the zone ranges between 829.5 and 919 mm.
2. North-eastern dry zone: The total geographical area of the zone is 17.59 lakh hectares.
It includes eleven taluks of Gulbarga and Raichur districts. The zone receives an average rainfall
of 720 mm annually.
3. Northern dry zone: It is largest of all the zones in the state and comprises of 34 taluks of
Bijapur, Bellary, Davanagere, Koppal, Raichur and Dharwad districts. The soils of the zone are
medium to deep black clay in larger areas and sandy loam in small portion. The annual rainfall
ranges between 464.5 and 785.7 mm.
4. Central dry zone: The zone includes 19 taluks of Davanagere, Chitradurga, Tumkur,
Hassan and Chikmagalur district. It has a geographical area of 19.99 lakh ha. with an average
annual rainfall of 586.5 mm.
5. Eastern dry zone: This zone has a low rainfall pattern but with more uniform
distribution. The head quarters of UAS, Bangalore is located in this zone. The zone comprises 24
taluks coming under Bangalore, Kolar and Tumkur districts.
6. Southern dry zone: It has geographical area of 15.56 lakh hectares and consists of 18
taluks distributed over Mandya, Mysore, Chamarajanagar, Hassan and Tumkur district. Annual
rainfall of the zone ranges between 670.6 and 88.6 mm. Major area of the zone consists of red
sandy loam soils. Paddy grows under 3 lakh hectares with production of 6.5 lakh tones and
productivity of 2.2 tonnes / ha.
7. Southern transition zone: The total geographical area is 13.09 lakh ha comprising of 14
taluks coming under Shimoga, Davanagere, Chikmagalur, Hassan and Mysore districts. Annual
rainfall of the zone ranges from 611.7 to 1053.9 mm.
8. Northern transition zone: the zone has a geographical area of 11.30 lakh hectares. It
covers 14 taluks distributed in Dharwad, Haveri and Belgaum district. The zone receives 619.4 to
1303.2 mm rainfall annually.
9. Hilly zone: It is also called as malnad zone having district agro-climatic features with
rolling topography of mountains and deep valleys. It has a geographical area of 22.89 lakh
-
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hectares covering 22 taluks of Uttar Kannada, Shimoga, Chikmagalur, Hassan, Coorg and
Dharwad districts. This zone receives maximum rainfall of about 3695 mm annually.
10. Coastal zone: It is characterized by heavy rainfall. It has a geographical area of 11.67
lakh hectare. It includes 13 taluks distributed in Uttar Kannada, Mangalore and Udupi districts.
The annual rainfall ranges from 3010.9 to 4694.4 mm.
IV. Rice production scenario:
In Karnataka rice is grown under a variety of soils and wide range of rainfall and
temperature. Only around 44 per cent of the total acreage is under irrigation while the rest is
under the regime of monsoon. Rice is cultivated in places where the rains are as heavy as 3000
mm and in others where it is just 600 mm. In some areas only one crop is grown and in certain
other areas three crops are raised. The unique feature of rice culture in the state is that either
sowing or transplanting is seen in all seasons of the year. The duration of the rice varieties
cultivated in the state varies from 100 to 180 days depending on season and agro-climatic
location.
V. Region-wise Rice growing ecosystems
In Karnataka it is highly challenging for the researchers to work with the problems of
diversified rice cultivation. Based on the agro-climatic situation, amount and distribution of
rainfall, soil type and prevailing agro-climatic practices, rice growing ecosystems of the state can
be broadly classified into following six categories.
1. Coastal area: A major area of nearly 0.21 m ha of rice is covered by the coastal area with
the productivity of 2.9 t/ha. This area comprises the entire district of Udupi and Mangalore as
well as part of Uttar Kannada district. This area enjoys very good annual rainfall of about 3600
mm. The rice soils are mostly laterites with poor fertility and are generally deficient in lime. It
has three main rice seasons. In the first crop season, (May-June to September-October)
varieties with 135-140 days maturity are grown. The second crop is sown in Sept-October and
harvested in January-February. The third crop is cultivated between January and March. The
other seasons are late Kharif sown during August first week and Yedakolake sown during
-
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December. It is mainly an irrigated crop. In this region, varieties with coarse grain and red
kernels are generally preferred for parboiling. The major constraints in the region are scarcity of
labours, leaching of nutrients, infrastructures, soil acidity, crop damage by wild animals, erratic
rainfall, gall midge, blast and seasonal floods.
2. Hilly area: A total of 0.26 m ha is under rice with the productivity of 1.98 t/ha. The hill
region which includes Coorg, Chikmagalur and parts of Hassan district is completely under the
regime of monsoon. The area receives rainfall from May to October. The annual precipitation of
this region is around 1600 mm or higher. The temperature variation is also much greater (13o c
to 36o
c) in hilly region than in other regions of the state. Soils are mostly laterites, poor in lime
and acid in reaction. In the eastern parts of Chikmagalur district red soils of sandy to loamy
texture occur. The main rice season is from June-July to November-December. Rice is grown
either transplanted or broadcast. The toposequence of land situation limits the choice of
varieties, with different duration (145 to 180 days). In most hilly areas, rice is grown only once a
year. In the uplands of this hilly area rice is direct seeded on a considerable area. This class of
rice is sown in May-June and harvested in September-October.
3. Transitional area: This is the drill sown rice area, comprising Belgaum, Dharwar and parts
of North canara districts. It has a total of 0.19 m ha. (14.4 per cent of the area under rice) with
1.12 t/ha of productivity. This area is unique in that rice is direct seeded over 90 per cent of the
area. The crop is direct seeded under relatively dry conditions and the fields remain unflooded
for most part of the period. The region receives an annual rainfall of 619 to 1303 mm. The soils
vary from laterite to clay loams. Mixed red and black soils also prevail. These soils exhibit
moderate fertility. Rice is grown in terraced fields with three types of land situations – up lands,
mid lands and low lands. Short duration rice varieties grown in up lands and mid-late varieties in
mid-lands. Late duration (long duration) varieties are grown in lowlands. On a limited area, rice
is also grown during summer season (January-February to March-April) using lift irrigation.
4. Tankfed area: The area under rice in tank-fed area is around 0.15 m ha with the
productivity of 2.48 t/ha. This region includes the districts of Kolar, Bangalore, Tumkur and parts
-
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of Hassan. It covers 11.0 per cent of the area under rice. This area receives an average annual
rainfall of about 760 mm. Tanks get filled during October-November. The irrigation is through
tanks water only. Generally two crops are grown. This region is unique that rice is grown on
semi-dry cum wet crop called Punaji. Rice is sown dry during June-July and carried on as a dry
crop until August-September. Water is impounded late in September-October and later
cultivated as wet rice. In addition transplanting is also in practice but late in the season in
August-September. This class of rice is harvested in December-January. Summer rice is grown
on a limited area only when tank water is available.
5. Irrigated maidan area (South): It occupies an area of 0.18 m ha, with the productivity of
2.59 t/ha. This includes the canal irrigated areas of Mandya, Mysore, Hassan, Chamarajanagar
and parts of Shimoga, Davanagere and Chitradurga districts. This area receives an annual
rainfall of 778 mm. The soils are mostly red in colour, sandy to loamy in texture and rich in
potash. It has two main season viz., the kharif (June-July to November-December) and summer
(January-February to May-June). In kharif season varieties of long duration (140-145 days),
medium duration (130-135 days) and short duration (110-115 days) are grown while during
summer it varies from short duration to long duration depending upon the availability of water
in the reservoir / tank. In this area low temperature prevails during November – January.
6. Irrigated maidan area (North): This occupies an area of 0.21 m ha with the productivity of
2.53 t/ha. It comprises Raichur, Bellary, Haveri, Koppal, Dharwad, Gulbarga and Belgaum
districts. Major source of irrigation in Raichur, Bellary, Haveri and Koppal districts is
Tungabhadra Project. This region receives an annual rainfall of 600 mm only. The rice soils vary
from black cotton type to mostly lighter black to reddish in colour. These soils exhibit a fair
degree of fertility and are generally rich in lime and magnesium. Considerable areas are affected
by salinity and/or alkalinity. As in southern irrigated maidan area here also two crops are grown.
In the kharif season rice varieties of 140-145 days duration are cultivated while summer crop is
cultivated on limited areas with short to mid-early duration genotypes.
-
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VI. Rice Production and Economic Analysis
Table 1. District-wise Area, Production and Productivity of Rice in Karnataka (2007-08)
Districts Area (ha) Production (t) Yield (Kg/ha)
Bagalkote 87 210 2541
Bangalore Urban 2119 6738 3347
Bangalore Rural 2293 8183 3857
Belgaum 71269 89459 1322
Bellary 122721 410503 3521
Bidar 6503 3435 657
Bijapur 12 29 2544
Chamarajanagara 19294 54673 2983
Chikaballapur 8122 26356 3416
Chikmagalur 43789 106000 2548
Chitradurga 8667 18410 2236
Dakshin Kannada 55372 132894 2526
Davanagere 130208 428172 3461
Dharwad 32834 35398 1135
Gadag 1905 3055 1688
Gulbarga 92740 157008 1782
Hassan 53146 128074 2537
Haveri 51669 64709 1818
Kodagu 35362 88096 2622
-
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Kolar 4157 7621 1930
Koppal 75223 245003 3428
Mandya 88657 266775 3143
Mysore 123803 356604 3032
Raichur 164925 468464 2990
Ramanagaram 6612 17968 2861
Shimoga 131070 313243 2516
Tumkur 39816 105308 2704
Udupi 61512 132678 2270
Uttara Kannada 80100 127083 1662
Total (Karnataka) 15, 13, 987 38, 02, 149 2644
Table 2. Cost of Cultivation of Paddy
Sl.
No.
Nature of work Total amount
(Rs./ha)
1. Preparatory tillage
a) Nursery preparation : 750.00
b) Bund trimming : 1,250.00
c) Ploughing (2 times) : 2,500.00
d) Leveling and puddling : 1,875.00
Total : 6,375.00
2. Manures and manuring
a) Organic manure (FYM @ 10 t/ha) : 4,000.00
-
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b) Application of FYM : 500.00
c) Inorganic fertilizer (100:50:50 kg NPK/ha)
Urea : 217 kg : 1,130.00
SSP : 313 kg : 1,282.50
MoP : 083 kg : 600.00
ZnSO4 : 20 kg : 600.00
d) Fertilizer application : 750.00
Total : 8,862.00
3. Seeds and Transplanting
a) Seeds (62.5 kg/ha) : 1,250.00
b) Plucking of seedlings and transplanting : 3,100.00
Total : 4,350.00
4. After tillage and care
a) Weeding – weedicide (Londax power 10 kg/ha) : 900.00
b) Application cost : 250.00
c) One hand weeding at 25-30 DAT : 1,200.00
d) Plant protection measures :
Insecticide/Fungicide(Need based chemicals) and
application cost
2,250.00
Total : 4,600.00
5. Irrigation : 2,250.00
Total : 2,250.00
6. Harvesting and preparing for market
-
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a) Harvesting, bundling, threshing, winnowing and
transporting
:
7,300.00
7. Miscellaneous (Land rent, etc.) : 1,250.00
Total : 8,550.00
Grand total : 34,987.00
Total cost of cultivation/ha: Rs.34, 987/-
B. Gross income
(i) Principal products Grain yield : 6250 kg @ 10.00/kg = 62, 500.00
(ii) By-product Straw : 7500 kg @ 00.50/kg = 3, 700.00
-------------------
66, 200.00
--------------------
Total Gross income/ha: Rs.66, 200/-
Net profit: Gross income – Cost of cultivation
: Rs. 66, 200 – 34, 987
: Rs. 31, 213/-
B:C ratio : 0.9
Note: Market Value
1. TL seeds :- Rs. 20 / kg 2. Grain :- Rs. 10 / kg 3. Straw :- Rs. 0.5 / kg 4. Bullock :- Rs. 250 / day 5. Casual Women Labour :- Rs. 80 / day 6. Casual Men Labour :- Rs. 100 / day 7. Urea :- Rs. 5.20 / kg 8. SSP :- Rs. 4.10 / kg 9. MOP :- Rs. 4.40 / kg 10. ZnSO4 :- Rs. 30 / kg
-
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VII. Rice and rice based cropping systems zone-wise
In Karnataka, where two crops of rice are taken in a year black gram / greengram is
cultivated after rice crop. The first crop is cultivated from June-July and harvested during
December and the second crop is sown during January and harvested in the months of April-
May. In canal irrigated areas of the state the cropping patterns like Rice-Rice-fallow, Rice-Ragi or
Rice-Pulses are being followed.
Table 3. Rice based cropping systems followed in different zones of Karnataka
Zone-4
Sl.
No.
Kharif Rabi Summer
Low Land
01 Paddy Green Manuring Crop Paddy
Plane Land
01 Green Manuring Crop Fallow Paddy
02 Paddy Fallow Hybrid maize / Ragi / Ground
nut / Sunflower
03 Paddy Fallow Sesamum / Cowpea /
Sorghum
04 Ragi Sunflower Paddy / Ground nut
05 Ragi / Pulses Sugarcane
Zone 5 (Tank-fed)
01 Ragi / Ground nut /
Sunflower
Fallow Paddy
02 Paddy (Short
duration)
Fallow Ragi / Ground nut / Sunflower
/ Cowpea
-
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Zone 6 (Channel Irrigated)
01 Paddy Fallow Paddy
02 Paddy Fallow Ragi
03 Paddy Fallow Sesamum / Cowpea /
Sorghum
Zone 7
Low Land and Mid Land Area
01 Paddy Fallow Soybean
02 Paddy Fallow Ground nut
03 Paddy Fallow Maize
04 Paddy Sunflower Cowpea
Zone 8
01 Paddy Wheat Maize / Sorghum / Ground nut
02 Paddy Wheat Paddy
03 Ground nut Wheat Paddy
04 Paddy Fallow Paddy
Zone 9
01 Paddy Fallow Paddy / Cowpea / Ground nut
/ Soybean
02 Paddy Fallow Ground nut
Zone 10
Three Crops Growing areas
01 Paddy Paddy Ground nut
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02 Paddy Ground nut Ragi / Vegetables
Two Crops Growing areas
01 Paddy Fallow Ground nut
02 Paddy Fallow Vegetables
03 Paddy Fallow Black gram / Green gram /
Cowpea
04 Paddy Fallow Sesamum
Mono Crop Growing areas
01 Paddy - Green Manuring Crop
02 Paddy – Horse Gram
VIII. Rice growing seasons and regions
Major rice growing areas of the state can be broadly classified into two seasons, viz.,
kharif (June-July) and summer (January-February). In all the six rice growing ecosystems, Kharif
sowing is common while during summer season the crop is cultivated mainly in the irrigated
maidan areas of north and south. In the tank-fed areas, the crop is taken up late in the season
(August-September) depending upon the monsoon showers. In coastal area, one can see a
specific situation where a second crop is sown in September-October and harvested in January-
February and the third crop is cultivated between December-January and March-April. In each
district, nearly 60-80 per cent of the total area is covered during Kharif (wet) season while the
remaining area is occupied in late Kharif and summer (dry) season.
a. Zone-wise Varieties and Hybrids :
-
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Table 4.Rice varieties recommended for Zone 4, 5 and 6 under channel and well irrigation
Varieties Duration Grain type Sowing time Transplanting time Yield (q/ha)
Kharif
BR-2655 140-145 Medium Before end of
June
Before July 3rd
week 60 to 65
Jaya 140-145 Bold Before end of
June
Before July 3rd
week 55 to 60
Mandya Vijaya 140-145 Fine Before end of
June
Before July 3rd
week 50 to 55
Thanu 130-135 Medium Before July 2nd
week
August 1st
week 45 to 50
MTU-1001 130-135 Bold Before July 2nd
week
August 1st
week 45 to 50
IR-30864 130-135 Medium Before July 2nd
week
August 1st
week 45 to 50
IR-20 130-135 Medium Before July 2nd
week
August 1st
week 45 to 50
Pushpa 130-135 Long,
Slender
Before July 2nd
week
August 1st
week 45 to 50
MTU-1010 120-125 Long,
Slender
Before July 2nd
week
August 1st
week 45 to 50
Rasi 120-125 Medium Before end of
July
August 3rd
week 40 to 45
Tellahamsa 120-125 Medium Before end of
July
August 3rd
week 40 to 45
Mangala 110-115 Bold August 2nd
week
September 1st
week 35 to 40
-
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Mukthi (CTH-1) 125-130 Bold, Red
Rice
Before end of
August
September 3rd
week 30 to 35
Billimukthi
(CTH-3)
110-115 Bold Before end of
August
September 3rd
week 30 to 35
Hybrid
KRH-2 130-135 Medium Before July 2nd
week
August 1st
week 70 to 75
Table 5. Rice varieties recommended for Zone 5 and 6 under tank irrigation
Varieties Duration Grain type Sowing time Transplanting time Yield (q/ha)
Kharif
IR-30864 130-135 Medium Before July 2nd
week
August 1st
week 60 to 65
IR-20 130-135 Medium Before July 2nd
week
August 1st
week 60 to 65
Pushpa 130-135 Long,
Slender
Before July 2nd
week
August 1st
week 60 to 65
Rasi 120-125 Medium Before end of
July
August 3rd
week 55 to 60
Tellahamsa 120-125 Medium Before end of
July
August 3rd
week 55 to 60
Mangala 110-115 Bold August 2nd
week
September 1st
week 45 to 50
Mukthi (CTH-1) 125-130 Bold, Red
Rice
Before end of
August
September 3rd
week 50 to 55
Billimukthi
(CTH-3)
110-115 Bold Before end of
August
September 3rd
week 50 to 55
-
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Hybrid
KRH-1* 120-125 Medium Before end of
July
August 3rd
week 55 to 60
KRH-2 130-135 Medium Before July 2nd
week
August 1st
week 75 to 80
Table 6. Rice varieties recommended for Zone 4 and 6 under Saline soils
Varieties Duration Grain type Sowing time Transplanting time Yield (q/ha)
Kharif
IR-30864 130-135 Medium Before July 2nd
week
August 1st
week 35 to 40
Vikas 130-135 Medium Before July 2nd
week
August 1st
week 35 to 40
Table 7. Rice varieties recommended for Zone 7 and 8 under channel and well irrigation
Varieties Duration Grain type Sowing time Transplanting time Yield (q/ha)
Kharif
KRH-2 125-130 Medium
Slender
Before end of
June
Before July 3rd
week 75 to 80
BR-2655 140-145 Medium Before end of
June
Before July 3rd
week 60 to 65
Jaya 140-145 Bold Before end of
June
Before July 3rd
week 55 to 60
Mandya Vijaya 140-145 Fine Before end of
June
Before July 3rd
week 50 to 55
IR-30864 130-135 Medium Before end of Before July 3rd
week 50 to 55
-
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Slender June
Late Kharif
KRH-1 115-120 Medium
Slender
Before mid July August 1st
week 55 to 60
IR-20 120-125 Medium
Slender
Before mid July August 1st
week 45 to 50
Rasi 120-125 Medium
Slender
Before mid July August 1st
week 50 to 55
Mangala 110-115 Medium
Slender
Before mid July August 1st
week 35 to 40
Table 8. Rice varieties recommended for Zone 7 and 8 under Punaji cultivation
Varieties Duration Grain type Sowing time Transplanting time Yield (q/ha)
Are-makki gadde (Mid Land Rice)
Jaya 140-145 Bold Before June 15th
Before July 3rd
week 35 to 40
Kadamba 135-140 Medium
Slender
Before end of
June
Before July 3rd
week 60 to 65
Avinash 135-140 Bold Before end of
June
Before July 3rd
week 35 to 40
Low Lands Rice
Abhilash 155-160 Medium
Slender
Before end of
June
Before July 3rd
week 40 to 45
Intan 165-170 Medium
Slender
Before end of
June
Before July 3rd
week 40 to 45
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Table 9. Rice varieties recommended for Zone 9
Varieties Duration Grain type Sowing time Yield (q/ha)
Kharif
Low Land
Intan 165-170 Medium Slender 1st
forenight of
June
45 to 50
Hemavathi 165-170 Medium Slender 1st
forenight of
June
50 to 55
Sharavati 180-185 Bold, Red 2nd
forenight of
May
50 to 55
KHP-10 145-150 Medium, Red Before June 3rd
week
45 to 50
PUBM-8 175-180 Medium Slender Before June 1st
week
45 to 50
Majalu Bhoomi (Mid Land)
KHP-2 145-150 Medium Slender 1st
fortnight of June 45 to 50
IET-7191 150-155 Bold 1st
fortnight of June 50 to 55
IET-13901 150-155 Medium Slender 1st
fortnight of June 50 to 55
KHP-10 145-150 Medium bold Before June 3rd
week
45 to 50
Hilly Area
Gama-138 135-140 Bold 2nd
fortnight of
May
35 to 38
Karana 140-145 Medium Slender 2nd
fortnight of
May
35 to 38
Jaya 145-150 Bold 2nd
fortnight of
May
35 to 38
KHP-5 145-150 Medium bold Before June 1st
week
40 to 43
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Late Kharif
Karna 140-145 Medium Slender Before July 2nd
week
40 to 43
IR-20 140-145 Medium Slender Before July 2nd
week
40 to 43
Mangala 125-130 Bold Before July 2nd
week
38 to 40
Mukthi (CTH-1) 130-135 Medium Bold Before July 2nd
week
38 to 40
Billimukthi (CTH-3) 130-135 Medium Bold Before July 2nd
week
38 to 40
Summer
Mangala 125-130 Medium Slender 1st
week of January 38 to 40
IR-20 140-145 Medium Slender 1st
week of January 40 to 43
Mukthi (CTH-1) 130-135 Medium Bold 1st
week of January 38 to 40
Madhu 130-135 Medium Slender 1st
week of January 38 to 40
Table 10. Rice varieties recommended for Zone 10
Varieties Duration Salient features Sowing time Yield
(q/ha)
Ennilu : karthi (Kharif)
Bettu
Mahavira 110-115 Red rice, Gall midge resistant 1st
week of June 35 to 40
KCP-1 115-120 White rice, Gall midge resistant 1st
week of June 35 to 40
Majalu
Shakthi 120-125 White rice, Gall midge resistant May end – June end 40 to 45
Latha 125-130 White rice, Gall midge resistant May end – June end 40 to 45
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MO-4 130-135 Red rice, Gall midge resistant May end – June end 40 to 45
Champaka 130-135 Red rice, Gall midge resistant May end – June 2nd
week 40 to 45
Bayalu
Phalgunna 135-140 White rice, Gall midge resistant May end – June 1st
week 40 to 45
Netravathi 135-140 White rice, Gall midge resistant May end – June 1st
week 40 to 45
MO-4 130-135 -- May end – June 1st
week 40 to 45
Suggi
Mukthi 120-125 Red Rice, Blast Resistant October 35 to 40
Joythi 100-105 Red Rice October 30 to 35
Shakti 120-125 -- October 35 to 40
Kolake
Jaya 120-125 Bold, White Rice January 40 to 45
Table 11. Rice varieties recommended for Zone 1,2,3,8,9 and 10
Varieties Zone and
Situation
Sowing time Duration and salient features
Kharif
Jaya 1,2,3,8,9, Rain
fed / Irrigated
Before end of June 140-145, Long, Bold
Rasi 1,2,8, Rain fed /
Irrigated
Before end of June 125-130, Suitable for drill sowing
Vaani* 1,2,3, Irrigated Before end of June 140-145, Long Slender
Sona* 1,2,3, Irrigated Before end of June 140-145, Long Slender
Prakash* 1,2,3, Irrigated Before end of June 145-150, Long Slender
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IR-20 1,2,3, Irrigated Before July 15th
130-145, Medium Slender
Pushpa* 1,2,3, Irrigated Before July 15th
120-125, Long Slender
Madhu* 1,2,3, Irrigated Before July 15th
120-125, Medium Slender
Mangala* 1,2,3,8,9, Rain
fed / Irrigated
Up to August 15th
105-130, Medium Slender
BPT-5204 1,2,3, Irrigated Up to June 140-145, Medium Slender
Mandya
vaani*
1,2,3,8,
Irrigated
Up to July 15th
130-135, Long Slender
Karna* 1,2,3,8,9, Rain
fed / Irrigated
Up to July 15th
130-135, Long, Bold
GEB-24* 1,2, Irrigated Up to August 15th
165-175, Long Slender, Suitable for
drill sowing
Avinash* 3,8, Rain fed /
Irrigated
May - June 135-145, Medium Bold
MTU-1001 8, Rain fed May - June 130-135, Medium Slender
Pragathi* 1,2,3, Irrigated Up to July 130-135, Medium Slender
Mandya
Vijaya
8, Irrigated Up to June 140-145, Medium Slender
Joythi 8, Irrigated Up to June 125-130, Long, Bold
Amruth* 8, Rain fed May - June 105-110, Medium Bold, Suitable for
drill sowing
Abhilash* 8,9, Rain fed May - June 155-165, Long, Bold, Suitable for drill
sowing
Intan 8,9, Rain fed May - June 160-170, Long Slender, Suitable for
drill sowing
Hemavathi 9, Rain fed May - June 160-170, Medium Slender, Suitable
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for drill sowing
KPH-2 9, Rain fed May - June 1st
week 145-150, Medium Slender, Suitable
for drill sowing
IET-7191 9, Rain fed May - June 1st
week 150-155, Long, Bold, Suitable for drill
sowing
Mahaveera* 10, Rain fed May - June 1st
week 110-115, Long, Bold, Red, Suitable for
drill sowing
Shakthi* 10, Rain fed May - June 1st
week 120-125, Long, Bold, Suitable for drill
sowing
Phalguna* 10, Rain fed May - June 1st
week 135-140, Medium Slender, Suitable
for drill sowing
KKP-6 10, Rain fed May - June 1st
week 135-140, Long, Bold, Suitable for drill
sowing
Getu* 10, Rain fed May - June 1st
week 135-140, Long, Bold, Suitable for drill
sowing
IET-7564 10, Rain fed May - June 100-105, Long Slender
IET-13549 10, Rain fed May - June 130-135, Long Slender
Rabi (Irrigated)
Phalguna 10 Before end of October 140-150, Long, Bold
Jaya 10 Before end of October 120-145, Long, Bold
Joythi 10 Before end of October 100-105, Long, Bold
Shakthi 10 Before end of October 120-125, Long, Bold
Summer (Irrigated)
IR-64 1,2,3 Before end of January 120-125, Long Slender
ES-18* 1,2,3 Before end of January
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Tellahamsa 1,2,3 Before end of January 120-125, Long Slender
Sujatha 1,2,3 Before end of January 120-125, Long Slender
Rasi 8 Before end of January 120-125, Medium Slender
Joythi 8 Before end of January 125-130, Long Bold
Shakthi 10 Before end of January 120-125, Long Bold
Mukthi
(CTH-1)
10 Before end of January 125-130, Red Rice
* Varieties not in seed production chain
IX. Package of practices
Table 12. Fertilizer Requirement / ha
Fertilizers kg/ha
Transplanting Aerobic Rice /
Drill sown /
SRI
Hybrid
Rice Zone 4, 5, 6, 7 & 8 Zone 9 Zone 10
Kharif Summer Kharif Kharif
Nitrogen 100 125 75 60 100 120
Phosphorous 50 62 75 30 50 60
Potash 50 62 90 45 50 60
Table 13. Input Requirement / ha
Inputs
Zone 4, 5 and 6 Zone 7, 8 & 10 Zone 9
SRI
Transplanting Drill sown Transplanting Transplanting Drill
sown
Seeds
Variety 62 kg 75-80 kg 62 kg 62 kg 82 kg 5 kg
Hybrid 20 kg -- -- -- -- --
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FYM 10 tons 10 tons 05 tons
05 tons
-- 10
tons
Or Organic matter
/Green manures 05 tons -- 10 tons -- --
X (a). Traditional Rice Varieties:
Traditional rice varieties is being grown in very few selected regions of the state. The
major area of these varieties can be seen in Malnad, Hilly and Coastal tracts in Shimoga, Hassan,
Coorg, Udupi and South Kanara districts. Most popular traditional Rice varieties cultivated in
these areas include Rajaboga, Rajamudi, Kayame, Ratnachudi and Jerasanna. In maidan areas of
southern Karnataka cultivation of Haluballu can be seen in a limited area.
Rajaboga, Rajamudi and Ratnachudi are long duration, photosensitive, tall varieties with
fine grain quality. These varieties suite very well for the cropping system of malnad tract.
Hence, these are cultivated in few selected areas of the region. Jerasanna is cultivated in hilly
tracts of South Coorg and part of Hassan districts owing to its fineness and scented nature. The
cultivation of ‘Haluballu’ a medium duration, variety can be attributed to its good taste and
tolerance to pests and diseases.
Cultivation of rice in Karnataka state (earlier called as Mysore state) it as old as its
cultivation in the country. There were many varieties grown in different parts of the state under
varied agro-ecological situations. An exhaustive list of traditional rice varieties of erstwhile
Mysore state is compiled by Ramaiah (1953) and Richharia and Govindaswamy (1966). The most
important traditional rice varieties of the state and their salient features are given in Table14
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Table 14. Salient features of traditional rice varieties of Karnataka.
Sl.
No.
Variety Salient features
Merits Demerits
1. Haluballu Medium bold quality rice Poor yielder, lodging
2. Ratnachudi Fine grain good quality rice Poor yielder, photosensitive
3. Rajaboga Medium fine, good quality rice Lodging, medium yielder
4. Rajamudi Medium fine, good quality rice Lodging, medium yielder
5. Jerasanna Aromatic rice with short bold Blast susceptible, poor yield
6. Bangarkovi Long fine grain, quality rice Tall variety, lodging
7. Bangarasali Long fine grain, quality rice Tall variety, lodging
8. Bangakaddi Long fine grain, quality rice Tall variety, lodging
9. Bellary sanna Fine grain, quality rice Tall variety, lodging, poor yield
10. Coimbatore
sanna
Fine grain, good quality rice Tall variety, lodging, poor yield
11. Anekombu Elongated bold grain, for PB Poor yielder
12. Suggi Submergence tolerant red rice Poor yielder
13. Kolke Drought tolerant, red rice Poor yielder
14. Kaddi Oval bold for par boiled rice Coarse variety poor yield
15. Gajawali Elongated fine rice, good
quality
Coarse variety poor yield
16. Kembhuti Elongated bold grain Coarse variety poor yield
17. Bilekagga Saline Resistant variety Poor yield
-
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X (b). Traditional classification of rice lands and cropping seasons in the state
The cultivation of rice in the state dates back to early part of 20th
century. During this
period, it was cultivated in an area of 3.2 lakh ha with a production of 0.21 million tonnes. The
practice of rice cultivation purely under monsoon, monsoon followed by tank water and through
artificial irrigation by canal water under different agro-ecological situation was documented by
Ramiah and Rao (1953). Coastal region adjoining to Arabian sea in western part of the state has
been a traditional rice growing area. Rice was being cultivating here almost throughout the year
in different topographical situations. The farmers used to grow the crop under five different
periods / seasons and locally designated them as Anilu, Patla, Suggi, Yedekolake and Kolke.
These seasons can be simulated with the present kharif (May-June), late kharif (July-August),
rabi (September-October), early summer (December-January) and summer (January-February).
The cultivation was practiced on different land system and locally/traditionally called as Bettu
(upland), Majalu (mid land), Bailu (low land) and Patla (river bank). It was grown purely as a
purely rainfed crop in the hilly areas of malnad tract where soils are generally poor. Broadcasting
of seeds was the usual practice in these areas. In maidan (flat) basins the crop was grown using
monsoons with a protective irrigation from tanks. The cropping periods in the above two
situations prevailed between June to September. The crop was also cultivated purely under
canal irrigation in maidan areas during the said season. In lowland with tank water facility,
cultivation was also under practiced during summer months (January to April) popularly called as
Kar season.
X (c). Traditional cultural practices for pest and disease management
Cultivation practices followed in rice prior to the introduction of improved varieties,
chemical fertilizers, plant protection chemicals and machineries / agricultural equipments etc.
was not systematic and uniform in the state. Farmers used to follow different methods as per
their convenience and suitability in different traditional rice growing areas.
18. Kare kagga Saline resistant variety Poor yield
-
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Hilly areas, coastal areas and transitional areas of the state are considered as traditional
rice areas of state. In hilly and coastal areas, cultivation of rice was done on different soil
topography. The popular ones are Bettu (upland), Majalu (mid land), Bailu (low land) and Patla
(river bank). In all these eco-systems broadcasting of unsprouted seeds was the common
practice. Manual weeding and plant protections were not common. Application of forest soils
was the usual practice in many places. Harvesting and processing of the produce was done at
family level as the land holdings were small and scattered.
In transitional areas, farmers broadcast the self saved seeds after ploughing their land and
cover it up by passing a wooden plank on the land. In some other areas, sowing was also
practiced in the plough soles along with decomposed (FYM) farm yard manure. Weeding was
not usually practiced in the broadcasted crop while in line sowing it was controlled by inter-
cultivation by bullocks. No control measures were practiced for pest and disease in the rain-fed
ecosystem. However, pulses and oilseeds were intermixed (intercropped) which control the
pests and diseases to certain extent.
In all these areas, rice was cultivated mainly during monsoon period (May to August). In
coastal and hilly areas where water was available in the valleys and streams, rice was cultivated
to a limited extent during summer season. In transitional area, farmers grow crop using tank
water wherever available.
XI. Indigenous technical knowledge (ITKs) in the state
Sl.
No.
Indigenous Technology Advantage
1.
2.
Sowing of sorghum, red gram and Beans
on bund of Terraces
Mixed cropping of Rice + Sorghum in
drought prone areas
Efficient utilization of space and
smothering the weeds on bunds
As insurance crop to get the produce
from either of one crop depending on
-
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RICE IN KARNATAKA
3.
4.
5.
Inter-cultivation and ‘Hodta’ (Planking)
operations in dry and wet conditions in
paddy fields
Cutting the sides of terrace bunds during
rainy season with big sickle and putting
the soil on terrace bunds.
Manuring the weeds removed by heaping
in the fields and turning it frequently.
rainfall
Helps in removing the weeds, induces
better tillering, avoids percolation loss of
water and nutrients
Removes weeds and avoid the flow of
water from Paddy fields
Improves organic matter and soil
properties in the paddy fields.
XII. Status of recent rice production technologies
a. SRI
Need for SRI:
The rice production in India is strongly influenced by the amount and distribution of
rainfall. The water crisis that we are facing to-day is the greatest threat to rice cultivation.
Inadequate rainfall, lack of water harvesting measures and unscientific way use of water for
agriculture have brought down the per-capita availability of water by 40-60% in many Asian
countries including India. The depletion of ground water, inadequate water in reservoirs has
forced many farmers to abandoned rice cultivation. Since rice is most water consuming crop,
alternative rice cultivation strategies that require less water needs an hour. To mitigate the
looming water crisis there is a need to develop novel technologies and production system that
increase or sustains rice production. SRI is an emerging water saving technology, which can help
the farmers to overcome the present water crisis and as a methodology for increasing the
-
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productivity of irrigated rice by changing the management of plant, soil, water and nutrients.
More changes in this system are lower seed rate (5 kg/ha) , planting of young seedlings of 10-12
days at wider spacing of 25 cm x 25 cm or 30 cm x 30 cm with good soil conditions, use of more
organic nutrients sources, regular weeding and using less water (no flooding) to achieve higher
yield. SRI has been purposefully called a system rather than a technology as it involves the
holistic management to give ideal growing condition to rice plant.
Impact of SRI :
In southern Karnataka, adoption of system of rice intensification is very meager and this
system of rice growing has hardy created impact. Even though the SAUs, KSDA and NGOs of the
state have conducted demonstration on SRI, but the farmers of this region are reluctant to
adopt the technology because of more physical drudgery involved in transplant the young
seedlings in square planting, frequent weeding, problems in adopting intermittent irrigation,
non-availability of critical implements like marker and weeder and finally farmers mind set itself
is the major obstacle in the way of adoption of this novel management practice for enhancing
irrigated rice production. Hence, there is a need of refinement of SRI practice to suit the farmers
need and local conditions.
b. Hybrid rice
The basic research on hybrid rice in Karnataka started during 1970s under the guidance
of Dr. M.Mahadevappa. It was intensified through post graduate research when he returned
from China with technical know-how and breeding materials in 1981. In 1989 it was further
strengthened under the leadership of Dr. B.Vidyachandra when government of India sanctioned
ICAR/UNDP aided project on hybrid rice to Mandya recognizing it as one of the lead centers for
hybrid rice research in India. The intensive and systematic work done by the project has resulted
in the release of two hybrids viz., Karnataka Rice Hybrid 1 (KRH 1) in 1994 and Karnataka Rice
Hybrid 2 (KRH 2) in 1996. KRH 1 is a short duration hybrid maturing in about 120 –125 days with
the yield potential of around 6 t/ha. KRH 2 on the other hand is a medium duration hybrid
maturing in about 130-135 days with the yield potential of around 10 t/ha. The grain is long
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slender with little aroma. On an average it yields one tones extra per hectare over the best check
variety that is Jaya with the duration advantage of about 15 –20 days. In 2002 it has been
accepted for release at national level for all rice growing areas in the country except for coastal
and hilly regions. It is accepted for yield widely across the country.
Future strategies
The future research strategies for popularizing rice hybrids in Karnataka should focus on
the following aspects.
• Development of medium duration, bold grain hybrids without scent.
• Development of medium duration, long slender hybrids without scent.
• Development of medium duration, medium slender hybrids without scent
• Development of medium duration, long bold red rice hybrids without scent
• Development of hybrids suitable for delayed sowings (July-August) and for adverse
soils with tolerance to cold, blast and BPH.
• Development of hybrids suitable for coastal and hilly areas with tolerance to blast
and gall midge.
Development of suitable parental lines to achieve the above objectives and appropriate
seed production practices need immediate attention of the researchers.
c. Aerobic rice / conservation agriculture :
Rice is an important food crop largely cultivated under submerged condition by
transplanting. This method of cultivation requires large quantities of water and is labour
intensive. It is estimated that 5000 liters of water is needed to produce 1 kg of rice. Water is
most limited natural resource of late, due to failure of rains and over exploitation of ground
water. The dwindling water resources reveal a grim situation for lowland puddled rice
cultivation. Farmers are seeking alternate methods of cultivation for growing Rice to combat
this water scarce situation. One such method is cultivation of rice under aerobic situation which
is, characterized by aerated soil environment during the entire period of crop growth. In this
-
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type of cultivation rice is grown like ragi, maize of Jowar by giving surface irrigation. Irrigation is
provided once in 5-7 days in a direct seeded aerobic rice crop. Varieties suitable for this type of
cultivation also possess ability to withstand drought periods. Varieties are bred for aerobic
situation with root introgressed from upland genotype base that yield on an average of 5.0 t/ha
of grain and 6.00 t/ha of fodder. This type of cultivation saves about 60 percent of water. The
amount of methane emitted under aerobic situation is very low thus protecting the
environment. A new mid-early, high yielding variety MAS 946-1 is recently released by the
University for Aerobic Cultivation.
Advantages of Aerobic Cultivation:
• Puddling and submergence is not required
• Direct seed sowing
• Nursery and transplanting not required
• Less quantity of seed requirement
• Less labour requirement
• Saving irrigation water upto 60 per cent
• Efficient fertilizer utilization
• Low pest / diseases incidence
• Reduced methane emission leading to lower environmental pollution
• Profuse rooting and high tillering, less lodging and high grain and fodder yield
• Retention of soil structure and quality
• Control of mosquitoes Recommended Varieties
• MAS 946-1
• MAS 26
• Rasi
• Farmer grown locals
• Doddabairanellu Seeds and Fertilizers (ha):
* Seeds - 7 kg
* FYM - 10 tons
-
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* Chemical Fertilizers
Nitrogen - 100 kg
Phosphorus - 50 kg
Potash - 50 kg
* Micronutrients
Zinc Sulphate - 20 kg
Iron Sulphate - 12 kg
Weedicides (Pre-emergence):
1. Butachlor 50 EC, 1 lt/acre (300 ltrs of water) 2. Saathi (Phyrazosulphuran Ethyl 100g/acre in 300 ltrs of water)
a. IPM/IDM
Integrated Pest Management:
1. Cultural practices
Judicious use of nitrogen, pesticides can minimize the pest development. Adjust the
planting in such a way, can minimize the pest incidence. For instance early planting in coast
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