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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
 
Subject Monthly precipitation, pearl millet–sorghum rotation, regression model, soil fertility, sustainability yield index
 
Description Not Available
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.
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Date 2020-05-08T10:48:33Z
2020-05-08T10:48:33Z
2014-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/35480
 
Language English
 
Relation Not Available;
 
Publisher Not Available