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首页> 外文期刊>Environment and Ecology >Weed Management Practices for Improving Productivity and Nutrient Uptake of Sunflower (Helianthus annuus L.) in Alfisols
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Weed Management Practices for Improving Productivity and Nutrient Uptake of Sunflower (Helianthus annuus L.) in Alfisols

机译：用于提高向日葵（Helianthus Anuus L.）的生产力和营养吸收的杂草管理实践在Alfisols中

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摘要

A field experiment was conducted to study the integration of pre and post-emergence herbicides and cultural practices for weed management in sunflower (Helianthus annuus L.)on red sandy loam soil during khariflQU at AICRP on sunflower, ZARS, UAS, GKVK, Bengaluru with combination of 9 weed management treatments in three replications. In this experiment one pre-emergence, four post-emergence herbicides and farmers practice i.e., two IC at 20 and 40 DAS + one HW at 30 DAS, which was compared with weed free (Three hand weedings at 15,30 and 45 DAS) and unweeded check. Among the different weed management practices, the nutrient uptake (N, P205 and K20) by crop was significantly higher with pendimethalin 38.7 CS at 1.0 kg a.i. ha~(-1) as PE + quizalofop-ethyl 10 EC at 37.5 g a. i. ha'1 at 17 DAS as directed POEon weeds (75.63,26.91 and 69.48 kg ha~(-1), respectively) and farmers practice (Two IC at 20and 40 DAS + one HW at 30 DAS) (83.15,31.63 and 75.68 kg ha~(-1), respectively) which was on par with weed free (Three HW at 15,30 and 45 DAS) (78.67, 28.98 and 71.49 kg ha~(-1), respectively)whereas uptake was lower in unweeded control (38.52,10.36 and30.43 kg ha~(-1), respectively). The nutrient uptake by weeds was in reverse trend.
机译：进行了田间实验，研究了在向日葵，Zars，UA，GKVK，班加罗尔的AICRP期间在日向日葵（Helianthus Anuus L.）的杂草管理中杂草管理前后出苗的杂草管理和文化实践的整合。三种复制中9种杂草管理治疗组合。在该实验中，一种前苗，四次出苗后除草剂和农民实践，即在20和40 DAS + 1 HW的两个IC，与杂草免费（三手杂草在15,30和45 das）比较。和无用的检查。在不同的杂草管理实践中，作物营养吸收（n，p205和k20）在1.0 kg a.i的pendimethalin 38.7cs中显着高。 Ha〜（-1）作为PE + Quizalofop-乙基10 eC，37.5g a。一世。 Ha'1在17 DAS，如指示的Poeon Weeds（75.63,26.91和69.48公斤哈〜（ - HA〜（-1）分别与自由杂草（15,30和45 das）（78.67,28.98和71.49 kg ha〜（-1）分别为杂草（38.67,25.98和71.49 kg），而在无用的控制中摄取较低（38.52,10.36和30.43 kg ha〜（-1））。杂草的营养吸收呈逆趋势。

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