Modeling Effects of Soil Fertility of Nutrients and Precipitation of 22 Years on Sustainable Productivity and Profitability of Pearlmillet and Sorghum Rotation in Semi-arid Vertisols
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Title |
Modeling Effects of Soil Fertility of Nutrients and Precipitation of 22 Years on Sustainable Productivity and Profitability of Pearlmillet and Sorghum Rotation in Semi-arid Vertisols
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Creator |
D. JAWAHAR,
G. R. MARUTHI SANKAR A. RENUKA DEVI, M. RAJESWARI V. SUBRAMANIAN, K. L. SHARMA, P. K. MISHRA, G. RAVINDRA CHARY, K. BHASKAR |
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Subject |
Monthly precipitation, pearl millet–sorghum rotation, regression model, soil fertility, sustainability yield index
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Description |
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Based on experiments conducted during 1988–2009 on rainfed pearl millet/sorghum with 9 treatments in Vertisols, an efficient treatment for sustainable productivity is identified. Twenty kg of nitrogen (N) from farmyard manure (FYM) + 20 kg N (urea) + 10 kg phosphorus (P) ha−1 in pearl millet and 40 kg N (urea) + 20 kg P + 25 kg zinc sulfate (ZnSO4) ha−1 in sorghum gave maximum yield and rainwater-use efficiency, whereas 20 kg N (FYM) + 20 kg (urea) + 10 kg P ha−1 in pearl millet and 40 kg (urea) + 20 kg P ha−1 in sorghum and gave maximum soil N, P, and potassium (K) over years. The regression model of 20 kg N (crop residue) + 20 kg N (urea) + 10 kg P ha−1 gave maximum R2 for predicting sorghum equivalent yield separately through precipitation and soil variables, whereas 20 kg N (FYM) + 20 kg N (urea) + 10 kg P ha−1 gave maximum R2 under combined model of both variables. Treatment of 20 kg N (FYM) + 20 kg N (urea) + 10 kg P ha−1 was superior for attaining maximum sorghum equivalent yield of 1062 kg ha−1, net returns of Rs. 4805 ha−1, benefit/cost (BC) ratio of 1.50, and 127 kg ha−1 of soil N, 10.3 kg ha−1 of soil P, and 386 kg ha−1 of soil K over years. Not Available |
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Date |
2020-05-08T10:48:33Z
2020-05-08T10:48:33Z 2014-01-01 |
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Type |
Research Paper
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Identifier |
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Not Available http://krishi.icar.gov.in/jspui/handle/123456789/35480 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Not Available
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