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首页> 外文期刊>Indian Journal of Weed Science >Bio-efficacy of readi-mix herbicides on weeds and productivity in late-sown wheat
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Bio-efficacy of readi-mix herbicides on weeds and productivity in late-sown wheat

机译：Readi-Mix除草剂对晚播种小麦的杂草和生产力的生物疗效

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摘要

A field experiment was conducted during 2015-16 and 2016-17 at Rajasthan College of Agriculture, Udaipur, India to evaluate the bio-efficacy of readi-mix herbicides in late sown wheat. The experiment consisting of fifteen treatments was laid out in randomized block design with four replications. The results revealed that Readi-mix application of sulfosulfuron + metsulfuron (32 g/ha)) and mesosulfuron + iodosulfuron (14.4 g/ha) gave higher weed control index (95.36, 94.72%), lower weed index (2.00, 2.75%) and weed persistence index (0.349, 0.351) whereas, higher index value of crop resistance index (CRI), weed management index (WMI) and herbicide efficiency index (HEI) (28.61, 0.38 and 5 50). Both of these treatments recorded 34.3 and 33.3 per cent grain yield enhancement along with 49.0% and 47.7% higher net returns over the unweeded control with the highest benefit-cost ratio (2.34 and 2.32). Results from contract analysis indicated significant (p < 0.0001) interaction of year x treatments and response of Readi-mix v/s single/sequential herbicide application on grain yield, weed density and dry matter. The joint effect of parameters on grain yield was significant with high magnitude (R_(GY Weed density total,weed dry weight total,Total N,P and Kuptake = 0 98; p < 0.0001). Additionally, the regression model for grain yield on total weed density (R~2 = 0.84), weed dry weight (R~2=0.79), total N uptake (R~2=0.98), P uptake (R~2=0.93) and K uptake (R~2= 0.97) demonstrated significant dependence. Moreover, no symptoms of phytotoxicity were seen in any of the treatment in the crop at 21 days after herbicide annlication.
机译：在印度乌代浦府乌代浦省农业学院的2015-16和2016-17期间进行了一个田间实验，以评估Readi-Mix除草剂在晚些时候播种的生物疗效。由十五种治疗组成的实验，在随机嵌段设计中进行了四种复制。结果表明，Readi-Mix应用磺胺呋喃+孔磺隆（32g / ha））和mesosulfuron +碘磺酸（14.4g / ha）给出了更高的杂草对照指数（95.36,94.72％），较低的杂草指数（2.00,2.75％）和杂草持久性指数（0.349,0.351），而作物阻力指数（CRI），杂草管理指数（WMI）和除草剂效率指数（Hei）的较高指标值（28.61,0.38和5 50）。这些治疗中的两种治疗均为34.3和33.3％的谷物产量增强以及49.0％和47.7％的净净返回，以最高的益处 - 成本比（2.34和2.32）。合同分析的结果表明，年X治疗的显着（P <0.0001）相互作用和Readi-Mix v / S单/序除除草剂对籽粒产量，杂草密度和干物质的反应。谷物产量的参数的关节作用具有高幅度（R_（GY杂草密度总，杂草干重，总N，P和Kupake = 0 98; P <0.0001）。另外，谷物产量的回归模型总杂草密度（R〜2 = 0.84），杂草干重（R〜2 = 0.79），总N吸收（R〜2 = 0.98），P吸收（R〜2 = 0.93）和k吸收（R〜2 = 0.97）显示出显着的依赖性。此外，在除草剂概括后21天在作物的任何治疗中没有观察到植物毒性的症状。

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