Influence of different preceding crops and N levels on productivity and profitability of zero-till rabi castor (Ricinus communis L.)
INFLUENCE OF DIFFERENT PRECEDING CROPS AND N LEVELS ON ZERO-TILL RABI CASTOR
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Authors
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M MADHU
College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana
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M VENKATA RAMANA
College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana
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S SREEDEVI
College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana
Keywords:
Castor, Equivalent yields, Nitrogen, Preceding crop, Zero-tillAbstract
An experiment was conducted at College of Agriculture, Rajendranagar, Hyderabad during kharif and rabi 2010-11 and 2011-12. It was laid out in a split plot design, replicated thrice, with four preceding crops in main plots (green gram, groundnut, bajra and maize) and five nitrogen levels to rabi castor in sub plots (0, 40, 80, 120 and 160 kg N/ha) to find out the effect of preceding crops on system productivity and system profitability of zero-till rabi castor under different nitrogen levels. Among different systems, maize-castor with application of 120 kg/N/ha to castor gave greater system productivity in terms of castor equivalent yield (CEY) (6685 and 5828 kg/ha/year), higher system productivity/day (18.3 and 16 kg/ha/day) and system profitability (` 342 and 360 ha/day). However, it did not differ statistically with greengram-castor at the same level of 'N' with comparable CEY (6356 and 5515 kg/ha/year), system productivity per day (17.4 and 15.1 kg/ha/day) and system profitability (` 336 and 351 ha/day).
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References
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