1409 - TNAU Experiences with Weeder Design
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The document discusses the experiences and design of weeders in the SRI (System of Rice Intensification) project by Dr. V.K. Ravichandran and the impact of various weeder types on soil fertility and crop growth. It highlights key agricultural statistics, the introduction and functionality of different weeders, and their adoption by farmers, including a mention of a farmer innovation award. The weeder technology has not only benefited local agricultural practices in Tamil Nadu but has also been adopted and refined for use in African countries.
1409 - TNAU Experiences with Weeder Design
- 1. TNAU EXPERIENCES WITH WEEDER DESIGN Dr.V.K.Ravichandran, Professor (Agronomy) (MDPU-IAMWARM Project) SRI EQUIPMENT WORKSHOP 01.11.2014
- 2. TN-IAMWARM Project is key for SRI Outreach in TN at Massive mode… Present Scenario Registered 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.
- 3. SRI Weeders Used in our project Cono Weeder -Clay Soil Rotary Weeder – Loamy Soil Drum Weeder – Alluvial clay Motorized Weeder
- 5. CONO WEEDER
- 6. VIDEO
- 8. SINGLE ROW FINGER TYPE ROTARY WEEDER
- 10. TWO ROW FINGER TYPE ROTARY WEEDER
- 11. DRUM WEEDER- A FARMER INNOVATION Mr. V.Durai, Varaghanadhi sub basin , he got Farmers Innovation Award 2012 from
- 12. Farmer innovation is in the farmers Hand VIDEO
- 13. Weeder – Petrol Operated Machine
- 14. Recent Mechanized Cono Weeder • Cost - $ 800 • Coverage - 2 Ha/Day • Petrol Driven
- 15. 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
- 16. Benefits of Weeder Effective weed control at early stage In situ incorporation enhances soil fertility Frequent disturbance to soil leads aerobic environment in rhizosphere which results in increased crop growth
- 17. Influence of Root growth by cono weeding
- 18. 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
- 19. SRI Equipments supplied through IAMWARM Year SRI WEEDER Total SRI 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
- 20. Our Weeder were taken for adoption by African Countries and refinement to fabricate their model
- 22. Thank