Post on 24-Jun-2015
description
TNAU EXPERIENCES WITH WEEDER DESIGN
Dr.V.K.Ravichandran,Professor (Agronomy)
(MDPU-IAMWARM Project)
SRI EQUIPMENT WORKSHOP 01.11.2014
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.
SRI Weeders Used in our projectCono Weeder -Clay Soil Rotary Weeder – Loamy
Soil
Drum Weeder – Alluvial clay
Motorized Weeder
DRUM TYPE WEEDER
CONO WEEDER
VIDEO
SINGLE ROW FINGER TYPE ROTARY WEEDER
TWO ROW FINGER TYPE ROTARY WEEDER
DRUM WEEDER- A FARMER INNOVATION
Mr. V.Durai, Varaghanadhi sub basin , he got Farmers Innovation Award 2012 from ICAR
Farmer innovation is in the farmers Hand
VIDEO
Weeder – Petrol Operated Machine
Recent Mechanized Cono Weeder
• Cost - $ 800• Coverage - 2 Ha/Day
• Petrol Driven
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
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
Influence of Root growth by cono weeding
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
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
Our Weeder were taken for adoption by African Countries and refinement to fabricate their model
Thank you