Nitrogen-management options for different crop-establishment methods in wheat under rice (Oryza sativa)-wheat (Triticum aestivum) cropping system

摘要

The present investigation was carried out at the research farm of the Indian Agriculture Research Institute, New Delhi, during winter (rabi) season of 2020-21 where 4 nitrogen (N)-management practices were evaluated under 4 establishment methods in 3times replicated split-plot design. The results exhibited that, the zero tillage+residue (ZT + R) application recorded significantly better growth parameters, yield attributes, grain yield (4.99 t/ha), straw yield (8.03 t/ha) and economic returns (net B: C ratio of 2.01) of wheat over the other treatments. Among the N-management options, LCC-guided N application resulted in significantly higher grain (5.39 t/ha) and straw yield (8.36 t/ha) and economic returns (net B : C ratio, 2.20) over the remainingtreatments. Therefore, LCC-guided N application under ZT + R in wheat proved a better option for better growth, productivity and higher returns in wheat under RWS.