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Studies on weed flora and weed control efficiency under diversification and intensification of rice-based cropping systems.

机译：水稻种植系统多样化和集约化对杂草区系和杂草控制效率的研究。

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摘要

A field experiment was conducted on diversification and intensification of cropping system under irrigated production system over existing rice-wheat and rice-chickpea cropping systems during the year 2009-10 in clay loam soils of Jabalpur (M. P.). In kharif, different rice varieties were grown under various crop sequences and the lowest weed biomass was recorded in rice-potato-maize cob+fodder (3.98 q/ha) cropped sequences and highest weed biomass was recorded in rice-potato-groundnut (5.60 q/ha) under among different crop sequences grown. During rabi season, the weed intensity was minimum (94.4 to 95.4/m2) in onion and garlic crop grown under two different crop sequences, hence, the lowest weed biomass (1.24 to 2.07 q/ha) was recorded in onion and garlic fields. Both gobhi sarson crops faced almost similar kind of weed infestation, which were higher as compared to potato, hence, these resulted in production of higher weed biomass (4.84 to 5.29 q/ha). During summer season, the weed intensity was maximum (118.0 weeds/m2) in greengram field, which resulted in the highest weed biomass production (3.89 q/ha). The weed biomass was minimum (3.22 q/ha) in sesame associated fields due to the lowest weed density (97.8 weeds/m2). Other summer season crops viz., groundnut, maize, okra and greengram produced the weed biomass. In kharif, different rice varieties were grown under various crop sequences and the highest weed control efficiency was recorded in rice-potato-maize cob+fodder (29.9%) cropped sequences. During rabi season, the weed control efficiency was highest (50.0 to 70.6%) in onion, garlic and at potato crop grown under three different crop sequences, hence, the lowest weed control efficiency was recorded in gabhi sarson and chickpea 2.36 and 6.14%, respectively. In summer season, the weed control efficiency was lowest (1.02%) in maize field which resulted in the highest weed biomass production (3.85 q/ha). The weed biomass was lowest (3.22 q/ha) in sesame fields due to the highest weed control efficiency (17.2%).
机译：在Jabalpur（M. P.）的粘土壤土中，在灌溉生产系统下，在现有稻麦和稻鹰嘴豆种植系统上，于2009-10年进行了种植系统的多样化和集约化田间试验。在哈里夫，不同的水稻品种在不同的作物种植顺序下进行种植，其中水稻-马铃薯-玉米芯+饲料的杂草生物量最低（3.98 q / ha），水稻-花生-花生的杂草生物量最高（5.60） q / ha）在种植的不同农作物序列之间。在狂犬病季节，以两种不同的种植顺序种植的洋葱和大蒜作物的杂草强度最小（94.4至95.4 / m 2 ），因此杂草生物量最低（1.24至2.07 q / ha）被记录在洋葱和大蒜田。两种哥布萨森农作物都面临着几乎类似的杂草侵染，与马铃薯相比，杂草侵染程度更高，因此，这导致了更高的杂草生物量产量（4.84至5.29 q / ha）。夏季，格林格拉姆田的杂草强度最大（118.0 weeds / m 2 ），导致杂草生物量最高（3.89 q / ha）。由于杂草密度最低（97.8杂草/ m 2 ），因此在芝麻相关田中杂草的生物量最小（3.22 q / ha）。其他夏季作物，例如花生，玉米，秋葵和格林格拉姆，产生了杂草生物量。在哈里夫，不同的水稻品种在不同的作物种植顺序下进行种植，在水稻-马铃薯-玉米芯+饲料中的除草效率最高（29.9％）。在狂犬病季节，洋葱，大蒜和在三种不同农作物序列下种植的马铃薯作物的杂草防治效率最高（50.0至70.6％），因此，在gabhi sarson和鹰嘴豆中，杂草防治效率最低，为2.36和6.14％，分别。夏季，玉米田的杂草控制效率最低（1.02％），从而导致杂草生物量最高（3.85 q / ha）。由于最高的杂草控制效率（17.2％），所以芝麻田中的杂草生物量最低（3.22 q / ha）。

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