1409 - tnau experiences with weeder design
DESCRIPTION
Presentation at the Workshop on Crop Production Equipment for the System of Rice Intensification (SRI) Presenter: Dr. V. K.Ravichandran: TNAU, India Title: TNAU Experiences with Weeder Design Date: November 1, 2014 Venue: ACISAI, Asian Institute of Technology, ThailandTRANSCRIPT
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TNAU EXPERIENCES WITH WEEDER DESIGN
Dr.V.K.Ravichandran,Professor (Agronomy)
(MDPU-IAMWARM Project)
SRI EQUIPMENT WORKSHOP 01.11.2014
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TN-IAMWARM Project is key for SRI Outreach in TN at Massive mode…
Present ScenarioRegistered Ayacut 10145 ha.
Mean annual rainfall is 804.49 mm.
Ground water potential:(based on 2009 assessment) 281.6 m.cu.m
Gross extraction of ground water 301.6 m.cu.m
Negative water balance of 20 m.cu.m
Categorization as “over exploited.
49% of the basin area is covered with paddy and 19% of area with sugarcane.
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SRI Weeders Used in our projectCono Weeder -Clay Soil Rotary Weeder – Loamy
Soil
Drum Weeder – Alluvial clay
Motorized Weeder
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DRUM TYPE WEEDER
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CONO WEEDER
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VIDEO
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SINGLE ROW FINGER TYPE ROTARY WEEDER
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TWO ROW FINGER TYPE ROTARY WEEDER
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DRUM WEEDER- A FARMER INNOVATION
Mr. V.Durai, Varaghanadhi sub basin , he got Farmers Innovation Award 2012 from ICAR
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Farmer innovation is in the farmers Hand
VIDEO
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Weeder – Petrol Operated Machine
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Recent Mechanized Cono Weeder
• Cost - $ 800• Coverage - 2 Ha/Day
• Petrol Driven
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Weeder Usage in SRI
First weeder use at 10 days
after Transplanting
Subsequent at 7-10 days
interval (3-4 times)
Continue up to 45 days
Rotary Weeder – Loamy Soil
Drum Weeder – Alluvial clay
Cono Weeder –Clay Soil
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Benefits of WeederEffective weed control at
early stageIn situ incorporation
enhances soil fertilityFrequent disturbance to
soil leads aerobic environment in rhizosphere which results in increased crop growth
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Influence of Root growth by cono weeding
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SRI
Conventional
Better functional root system
Non lodging even during aberrant weather• Root pruning leads to more functional roots and increased root volume
• Enhanced uptake of applied nutrients favours increased tillering
• Better anchorage – non lodging
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SRI Equipments supplied through IAMWARM
YearSRI WEEDER
TotalSRI Marker
TNAU DOA TNAU DOA
2007-08 5725 912 6637 - 912
2008-09 12905 1934 14839 517 1934
2009-10 4866 4485 9351 357 4485
2010-11 2674 21946 24620 533 21946
2011-12 2100 19977 19977 - 19977
2012-13 - 10910 10910 - 10910
2013-14 - 1250 1250 - 1250
Total 30944 61414 87584 1407 61414
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Our Weeder were taken for adoption by African Countries and refinement to fabricate their model
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Thank you