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|Title:||Effect of tillage, cultivars, nitrogen and residue management on crop performance and carbon sequestration in rice-wheat cropping system|
|Abstract:||A field experiment entitled “Effect of tillage, cultivars, nitrogen and residue management on crop performance and carbon sequestration in rice-wheat cropping system” was conducted at the participatory strategic research and learning platform for climate smart agriculture, Taraori, Karnal, Haryana during Kharif, and rabi seasons of 2013-14 and 2014-15 in collaboration with CIMMYT under CGIAR’s research program on climate change, agriculture and food security (CIMMYT-CCAFS). The treatment consisted of three tillage and crop establishment (TCE) methods in main plots and four treatments in subplot for rice (cultivar and nitrogen management) and wheat (legume and nitrogen management) crops. It was conducted in split plot factorial design having twelve treatment combinations each crop with three replications. Plant height, dry matter accumulation and no. of tillers were significantly affected by tillage and crop establishment method in both the year for both of the crops. Treatment ZT DSR-ZTW + R showed higher CGR and RGR as compared to rest of the treatments. Yield attributes of rice such as effective tillers, number of grains per panicle, 1000 grain weight etc were significantly influenced by TCE, Where PTR produced significantly lower number of effective tillers in comparison to ZT DSR but it produced higher number of grain per panicle over ZT DSR+R. Wheat grown under ZT DSR-ZT W +R resulted 8.63% (2013-14) and 14.60 % (2014-15) higher grain yield as compared to PTR-CTW. In both the years higher grain yield was observed under hybrid than Basmati. Treatment with full residue retention (ZT DSR-ZTW + R) showed highest potential of carbon sequestration; where up to depth of 30 cm, SOC was significantly affected by tillage and residue management. Tillage and residue management practices showed varied effects on system grain yield (Wheat equivalent), total cost, gross returns and net returns, where PTR-CTW resulted into lowest system grain yield and net returns. ZT DSR-ZTW + R produced maximum system grain yield. Maximum system net return was computed under ZT DSR-ZTW – R treatment in both the years i.e. 163451/ha (2013-14) and 141275/ha (2014-15); which was 7.28 and 12.08% higher than PTR-CTW in 2013-14 and 2014-15, respectively. Cultivation of basmati rice was more remunerative irrespective of growing season.|
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|CCSHAU-294625-Pardeep Kumar.pdf||Effect of tillage, cultivars, nitrogen and residue management on crop performance and carbon sequestration in rice-wheat cropping system||1.91 MB||Adobe PDF||View/Open|
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