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首页> 外文期刊>Indian Journal of Weed Science >Weed management effect to increase grain yield in dry direct-seeded rice
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Weed management effect to increase grain yield in dry direct-seeded rice

机译：杂草管理效果增加干燥直接稻籽粒产量

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摘要

An experiment was conducted during Kharif 2016 and 2017 at Agricultural Research Station, Dhadesugur, University of Agricultural Sciences, Raichur, Karnataka, India, to study the bio-efficacy of weed control practices on weeds and grain yield of dry-seeded rice. The dominant grassy weeds in fields were Echinochloa sp. Panicum repens, Cynodon dactylon, Bracharia mutica, Digilarias sanguinalis, Commelina communis and Leptochloa chinensis. Broad-leaf weeds were Eclipta alba, and Ludwigia parviflora andCyperus sp. as sedge. Results revealed that, pre-emergence application of pretilachlor + pyrazosulfuron-ethyl (600 + 15 g/ha) recorded significantly lower weed dry weight at 15, 30 and 45 DAS during Kharif 2016 and 2017, higher weed control efficiency at15, 30 and 45 days after sowing (DAS) (82.6, 80.2 and 80.6% during Kharif 2016 and 82.1, 82.7 and 80.2%, respectively during Kharif 2017, respectively) and higher rice grain yield (4.92 and 4.98 t/ha during Kharif 206 and 2017, respectively) and whichwas at a par with twice hand weeding at 20 and 40 DAS.
机译：在农业研究站，农业科学大学，印度莱科尔，卡纳塔克邦的农业科研站，魏德尔，卡纳塔克卡·卡纳塔克邦，研究了杂草控制实践的生物效能，进行了实验。田地中的主要草原杂草是Echinochloa sp。 Panicum Repens，Cynodon Dactylon，Bracharia Mutica，Digilarias sanguinalis，Commelina Communis和Leptochloa Chinensis。阔叶杂草是Eclipta Alba，Ludwigia parviflora和Cyperus sp。作为莎草。结果表明，在Kharif 2016和2017期间，预先出现的预粉醇+吡唑氟磺膦 - 乙基（600 + 15g / ha）在15,30和45 das期间记录的杂草干重，杂草控制效率为15,30和45播种后的天（DAS）（82.6,80.2和80.6％，分别在Kharif 2017年的Kharif 2017年期间）和较高的水稻产量（4.92和4.98 T / HA期间，Kharif 20 6和2017期间分别在20和40 DAS的两次手中的两次手中的杆子。

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