EFFECT of different rice based cropping systems on rice crop under irrigated condition in rice-wheat crop zone

Rice and wheat are the important crop of rice-wheat crop zone of Madhya Pradesh which occupy an area of 16.75 lakh and 43.0 lakh hectares, respectively. The average productivity of these crops are 11.94 q/ha and 20 q/ha, respectively which are low. It is due to adoption of same cropping pattern for long time. The productivity of these crops were limited due to specific weed and soil borne problem. Therefore, crop diversification is only way out to productivity enhancement and increment in economic benefits. Present study was carried out at Kuthulia farm of JNKVV College of Agriculture, Rewa during 2011-12. Study comprises with ten treatments of ten different cropping systems. Experiment was laid out in randomized block design with four replications.Results revealed that maximum rice yield 46.93 q/ha was obtained from rice-berseem cropping system,which is 17.12% higher than what is obtained from rice-wheat cropping system (40.07q/ha). Total biomass/ha was maximum under rice-mustard cropping system (117.52q/ha) which is 12.03% higher than what is obtained from rice-wheat cropping system (104.90q/ha).