Performance of Rice Under Crop Residue Incorporation and Different Nitrogen Management Practices

摘要

Field experiments conducted for in consecutive years 2002-2003 and 2003-2004 revealed that by raising a reasonably short duration leguminous crop (either a pulse or vegetable depending on farming situation) preceding to rice and incorporation of the crop residues after picking the economic yield and supply of 100 % recommended dose of nitrogen through fertilizer was the best nitrogen management of rice with higher productivity and economic returns. Incorporation of field bean crop residues (C_3) wassuperior to other crop residue incorporation with regard to yield attributes and yield. The highest gross returns and net returns as well as benefit-cost ratio were also recorded with the incorporation of crop residues of fieldbean (C_3). Supply of 100 %N through fertilizer to rice (N_2) was superior to any other nitrogen management practices, with regard to yield attributes and grain yield. The highest gross returns, net returns and benefit-cost ratio were recorded with application of 100 % nitrogen through fertilizer (N_2) followed by supply of 50 % nitrogen each through fertilizer and FYM (N_3).