<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk"^^ . "Our study suggests the possibility for transformational change in the productivity and risk profile of some of India's rainfed cropping systems. In the semi-arid regions of Southern India, farmers traditionally crop sorghum or chickpea on Vertisols during the post-rainy season, keeping the fields fallow during the rainy season. This practice avoids land management problems, but limits the potential for crop intensification to increase systems productivity. A long-term (15 year) experiment at ICRISAT demonstrated that cropping during the rainy season is technically feasible, and that grain productivity of double cropped sorghum + chickpea (SCP–SCP) and mung bean + sorghum (MS–MS) sequential systems were higher than their conventional counterparts with rainy season fallow, i.e. fallow + post-rainy sorghum (FS–FS) and fallow + post-rainy chickpea (FS–FCP). Without N application, mean grain yield of post-rainy sorghum in the MS–MS system was significantly greater (2520 kg ha−1 per two-year rotation) than in the FS–FS system (1940 kg ha−1 per two-year rotation), with the added benefit of the mung bean grain yield (1000 kg ha−1 per two-year rotation) from the MS–MS system. In the SCP–SCP system the additional grain yield of rainy sorghum (3400 kg ha−1 per two-year rotation) ensured that the total productivity of this system was greater than all other systems. Double cropping MS–MS and SCP–SCP sequential systems had significantly higher crop N uptake compared to traditional fallow systems at all rates of applied nitrogen (N).\r\n\r\nThe intensified MS–MS and SCP–SCP sequential systems without any N fertilizer applied recorded a much higher median gross profit of Rs. 20,600 (US $ 375) and Rs. 15,930 (US $ 290) ha−1 yr−1, respectively, compared to Rs. 1560 (US $ 28) ha−1 yr−1) with the FS–FS system. Applying 120 kg of N ha−1 considerably increased the profitability of all systems, lifting median gross profits of the sorghum + chickpea system over Rs. 60,000 (US $ 1091) ha−1 yr−1 and the conventional system to Rs. 20,570 (US $ 374) ha−1 yr−1. The gross profit margin analysis showed that nitrogen is a key input for improving productivity, particularly for the double cropping systems. However, traditional systems are unviable and risky without N application in the variable climates of the semi-arid tropics. Together, our results show that on Vertisols in semi-arid India, double cropping systems increase systems’ productivity, and are financially more profitability and less risky than traditional fallow post-rainy systems while further benefits can be achieved through fertilizer application."^^ . "2015-01" . . "62" . "-" . . "Elsevier"^^ . . . "European Journal of Agronomy"^^ . . . "18737331" . . . . . . . . . . . . . . . . . . . . . . . . . . . . "D"^^ . "Parsons"^^ . "D Parsons"^^ . . "P Q"^^ . "Craufurd"^^ . "P Q Craufurd"^^ . . "T J"^^ . "Rego"^^ . "T J Rego"^^ . . "H"^^ . "Meinke"^^ . "H Meinke"^^ . . "N P R"^^ . "Anten"^^ . "N P R Anten"^^ . . "M J"^^ . "Kropff"^^ . "M J Kropff"^^ . . "S P"^^ . "Wani"^^ . "S P Wani"^^ . . "V"^^ . "Nageswara Rao"^^ . "V Nageswara Rao"^^ . . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (PDF)"^^ . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (Other)"^^ . . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (Other)"^^ . . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (Other)"^^ . . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (Other)"^^ . . . . . . "Strategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk (Other)"^^ . . . . . "HTML Summary of #9353 \n\nStrategic double cropping on Vertisols: A viable rainfed cropping option in the Indian SAT to increase productivity and reduce risk\n\n" . "text/html" . . . "Food Legumes"@en . . . "Soil Science"@en . . . "Climate Change"@en . .