Effect of System of Rice Intensification (SRI) with “Agragel (T-400)”Practices on Yield Attributes,Yield and Water Productivity of Rice (Oryza Sativa l.) - Case Study
Work History:
The Shyamsundar Sister Nivedita Sangha, a dedicated NGO working with various programme to eleviate the socio-economic poverty of common marginal farmers and the people of BPL level families had already started their work on system of Rice Intensification(SRI) to aware the paddy farmers about proper use of water in cultivation as well as increseing trend of productivity. The Field trial on rice were carried out at Shyamsundar ,Burdwan,West Bengal,India in wet seasons in the year of 2009. The soil of the trial field was a deep, moderately well drained clay. The dates of sowing and harvest were 26 th August,2009.. Based on the previous year’s findings of individual technologies, the main objective was fixed to study only the combined effect of this individual technology as a package under SRI practices with Agragel T-400. We know SRI needs 40% less water than traditional cultivation. Other than that the application of Agragel T-400 in field will reduces 40 % less water than existing water requirement . After knowing this from Mr. Subhankar Guha,KOLKATA the Shyamsundar Sister Nivedita Sangha started a trial on SRI with Agragel T- 400 . The step wise work & observation are as follows in Annexure-I and comparison between SRI with Agragel T-400 & Traditional SRI are shown in Annexure-II.
This system is composed of a package of agronomic measures that should be applied simultaneously to realise a yield increase.The components of SRI include transplanting of young seedlings, usually 12- 15days and not more than 15 days old with Agragel T-400. This preserves a potential for tillering and rooting that is reduced if transplanting occurs after the 4th phyllochron. Seedlings are transplanted singly and very carefully to cause minimum trauma to the young plants. Transplanting of seedlings with wider spacing in a square pattern which facilitates better weeding operations using mechanical weeder and consequent aeration of the soil. This gives more room for better root and canopy growth. The soil is kept moist but not inundated during vegetative growth phase, so that the soil is aerated and never become hypoxic. Early and frequent weeding is essential because otherwise weed growth will become a problem. Weeding should be started about 10 days after transplanting using a spade mannually that churns up the surface soil to remove weed sand provides additional soil aeration. The practice of SRIwith Agragel T-400 is not only aiming at maximum yield but rather to promote the higher productivity of land, labour, capital, and water in ways that benefit the farmer especially poor one.
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