Integration of different organic manures and nitrogenous fertilizer and its effect on the growth and yield of rice

Abstract

Field experiment was conducted at Agricultural College and Research Institute, Killikulam during Pishanam season (November- March) of 2015 – 2016. Higher Plant height, dry matter production, yield attributes and grain yield was realised with application of 75% N as inorganic fertilizer and 25% N as poultry manure (7160 kg/ha) comparable with 25% N as vermicompost (6920 kg/ha) and was followed 25% N as green leaf manure (6710 kg/ha). Higher physiological efficiency was attained when substituting 25% N as poultry manure and was followed by the same proportion of vermicompost. The highest net return with B: C ratio of 3.12 was attained by 25% N substitution as poultry manure while green leaf manure fetched highest B: C ratio of 3.26. From the above results, it could be indoctrinated that application of 75% of recommended N as inorganic fertilizer and substitution of 25% N either as poultry manure or green leaf manure is the desirable integrated nutrient management practice for achieving higher productivity and profitability under transplanted condition.