Influence of sowing windows on yield performance, water-use efficiency, and profitability of oilseed crops
INFLUENCE OF SOWING WINDOWS ON YIELD PERFORMANCE, WUE AND PROFITABILITY OF OILSEED CROPS
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Authors
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C RADHA KUMARI
AICRP for Dryland Agriculture, Acharya N.G. Ranga Agricultural University, Agricultural Research Station, Ananthapuram-515 001, Andhra Pradesh
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B SAHADEVA REDDY
AICRP for Dryland Agriculture, Acharya N.G. Ranga Agricultural University, Agricultural Research Station, Ananthapuram-515 001, Andhra Pradesh
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M VIJAY SANKAR BABU
AICRP for Dryland Agriculture, Acharya N.G. Ranga Agricultural University, Agricultural Research Station, Ananthapuram-515 001, Andhra Pradesh
Keywords:
Oilseed crops, Rainfed alfisols, Sowing window, Water use efficiencyAbstract
A field experiment was conducted to evaluate the effect of sowing dates on growth, yield, rainwater-use efficiency, and economics of groundnut (Arachis hypogaea), castor (Ricinus communis), and sesame (Sesamum indicum). The experiment, laid out in a split-plot design with five sowing dates and three replications, revealed that crop duration, rainfall, and rainy days declined with delayed sowing. Early sowing (June 1 FN) produced the highest yields in groundnut (694 kg/ha) and castor (1388 kg/ha), while sesame performed better under mid-season sowings (August-September). Groundnut equivalent yield and economic analysis showed castor as the most productive and profitable crop (mean GEY 962 kg/ha, B:C ratio 3.37), followed by early-sown groundnut, whereas sesame remained uneconomical. Correlation and regression analyses identified filled pods, branches and spikes, and plant height as the major yield determinants in groundnut, castor, and sesame, respectively.
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References
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