Effect of Residue Management and Cropping System on Direct Deeded Rice and System Productivity

摘要

A field experiment was conducted during three seasons of 2018-19 at RPCAU, Pusa to evaluate the Effect of Residue Management and Cropping Systems on direct seeded rice and System productivity. Treatments comprised cropping systems in main plots: C_(1) - Rice - Wheat - Fallow, C_(2) - Rice - Wheat - Green Gram, C_(3) - Rice - Maize - Dhaincha, C_(4) - Rice - Maize + Potato - Dhaincha, C_(5) - Rice - Maize + Green Pea - Dhaincha and moisture regimes in sub plots with 3 days disappearance of ponded water in kharif season, three levels of IW/CPE ratio in rab i season I_(1) - IW/CPE = 0.6, I_(2) - IW/CPE = 0.8, I_(3) - IW/CPE = 1.0. Maximum number of tillers (273.55/m~(2)), dry matter production (1464.91g/m~(2)), number of panicles/m~(2 )(267.80 m~(2)), grain yield (52.21q/ha) of rice was observed in C_(5) cropping system and panicle length (23.99 cm cm), number of grains /panicle (160.05), straw yield (69.58 q/ha) in C_(4) which was? significantly superior than C_(1) cropping system. Plant height and 1000 grain weight, harvest index and Land Use Efficiency (LUE) were non significantly affected by different cropping systems. Maximum Rice Economic Yield (REY) of 24.26 t/ha and Production efficiency (PE) 73.97 kg/ha/day was observed in C_(4) which was significantly superior to rest of treatments. In sub plot maximum REY (15.905 t/ha) and PE (49.81 kg/ha/day) were observed in IW/CPE ratio 1 which was significantly superior to IW/CPE ratio 0.6 and 0.8.