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

Abstract

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: C1 - Rice - Wheat - Fallow, C2 - Rice - Wheat - Green Gram, C3 - Rice - Maize - Dhaincha, C4 - Rice - Maize + Potato - Dhaincha, C5 - 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 rabi season I1 - IW/CPE = 0.6, I2 - IW/CPE = 0.8, I3 - IW/CPE = 1.0. Maximum number of tillers (273.55/m2), dry matter production (1464.91g/m2), number of panicles/m2 (267.80 m2), grain yield (52.21q/ha) of rice was observed in C5 cropping system and panicle length (23.99 cm cm), number of grains /panicle (160.05), straw yield (69.58 q/ha) in C4 which was  significantly superior than C1 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 C4 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.