PRODUCTIVITY ENHANCEMENT OF KHARIF RICE THROUGH INTRODUCTION OF PRE KHARIF CROPS IN RICE BASED CROPPING SYSTEM

摘要

A field experiment was conducted at Agricultural College Farm, Naira on sandy clay loam soil during pre kharif and kharif 2012-2013. The experiment was laid out in randomized block design, with four replications and seven cropping systems. Sunnhemp, greengram, blackgram, sesame, clusterbean and bhendi during pre kharif and rice during kharif were tried. Incorporation of different pre kharif crop residues significantly altered the growth and development of kharif rice. The results indicated that crop residue incorporation of sunnhemp recorded significantly higher growth parameters, yield attributes, yield (6501 kg ha -1 ) and nutrient uptake of kharif rice while lowest was recorded with that of fallow (4125 kg ha -1 ). Economics of rice was also observed with sunnhemp crop residue incorporation.