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PESTS AND DISEASES
No serious insect or disease problems have been reported.
However, spider mites, slugs and whiteflies are to be easily
controlled by using pesticides.
Root rot may occur in poorly drained soils.
It is reportedly susceptible to powdery mildews.
Harvesting and Yield
The crops start to flower after 80 days of sowing.
Flowers set fruits in nearly three to four days and the pods
take nearly a month to mature.
When the fruits turn dark colour and white opening at angles
of the ridges of the pod then harvesting should be done.
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Otherwise they split and seed fall off and go waste.
Harvested capsules are sun dried and seeds dehisce when the
capsules burst.
The oil for perfumery is extracted by steam distillation of
crushed seeds.
Seeds should be stored in dry places.
Godowns are ideal for the storage.
Cold storage is not good for it.
Yield-About 750 kg/ha.
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Plant characterstics
Patchouli is perennial,branched,aromatic herb.
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Leaves are soft,opposite,ovate,serrate with hairs on both
surface
Stem is densely haired with swollen nodes.
Plant grow upto 90 to 100cm.
Flowering occour during month of feb –march
Patchoulol is the major aromatic compound(27-35%)
Major production Areas
Patchouli grown wild in malaysia,indonesia,singapore.
In india it is cultivated in coastal areas of south india,west
bengal,assam ,kernataka and coastal region of gujrat.
Cultivation method
1.Soil and climate
Average temperature 25-35 degree celsius for growth and
development.
Shade loving plant
Prefer hot and humid climate
Prefer sandy loam soil with good drainge.
Prefer neutral to slightly acidic soil.
Propogation
Propagated through rooted stem cutting.
Also propogated through tissue culture, but cost is high.
So nursery is raised through production of rooted stem
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cutting to avoid excess input loss.
Raising of nursery
Five hundred mother plant are required for the production of
25,000-30,000 rooted cutting, sufficent for one ha area.
Planting in nursery bed is done in the month of march-apirl.
Stem cutting of 10-15cm length with 2,3 nodes used for
production of healthy root cutting
Cutting dipped in 1500ppm IBA for few second to enhance
root production.
Seedling is ready for transplant in 6-7week.
Transplanting is done in the month of june-july.
Planting
Planting is done in the month of june-march.
Ridges and furrows at a distance of either 60cm or 90cm are
preapred.
Rooted cutting are planted at a distance of 60cm or 45cm
within row.
Crop nutrition
150:100:100 kg of NPK per ha.
Full dose of p & k & one by fourth of nitrogen is applied as
basal.
Nitrogen are apllied in 3 equal split doses ,one after each
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harvest.
Micronutrient mixture is to be sprayed @0.5-1% when leaves
shows symptoms of cholorosis & browning.
Irrigation
Crop is irrigated at 3-4 days intervals immediately after
planting.
10-12 days afterwards depending upon moisture availability
in soil.
Intercultural operation
Crop require weeding at early stage of its growth.
Nipping of shoot-Nipping of apex shoots of the plants at 20-
30 days after planting is essential for furthur development of
lateral shoots & uniform spread of canopy.
Done in month of august.
Patchauli can be grown as intercrop in partial shade of
mango,custard apple & also in the plantation of rubber and
coconut.
Harvesting
First harvesting is done after 4-5months after planting.
Further harvesting may be done at every 3-4 months
interval.
Harvesting is done by cutting the shoots of 4-5 nodes from
the apex,length of the cutting ranges from 40-50cm.
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It is necessary to leave few sprouts in the basal portion of the
stems for rapid regrowth of shoots.
Processing
Harvested biomass is dried in shade for 7-10 days with
frequent turning
Leaves are packed in gunny bags when moisture level is
brought down to about 6% & store in well ventilated places.
Dreid leaves are subjected to stem distillation for extracting
essential oil.
Oil yield varies from dried leaves is 2.5-3.5%
Yield-A good crop may be yield 10-25 tonnes per ha of fresh
harbage
3-5 tonnes per ha per year dry herbage.
Oil yield is about 60-100 kg per ha.
Diseases and pest
Root knot nematode infects the crop when crop get
established in the field,it can be reduce by applying organic
manure in high quantity during field prepartion &
application of Trichoderma spp.
Patchouli is susccepitable to rhizoctonia wilt,to control the
spread, infected plant are remove in early stage of disease.
Generally patchouli is free from major pest ,if infestation of
pest is serious then botanical pesticides is used.
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