Leaf colour chart-based nitrogen and weed management impacts on weeds, yield and nutrient uptake in dry direct-seeded rice

K. Hemalatha; Yashwant Singh; Sunil Kumar

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Leaf colour chart-based nitrogen and weed management impacts on weeds, yield and nutrient uptake in dry direct-seeded rice

机译：Leaf colour chart-based nitrogen and weed management impacts on weeds, yield and nutrient uptake in dry direct-seeded rice

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摘要

A field experiment was conducted during Kharif (rainy season) 2016 and 2017 in sandy clay loam soils of experimental field at Banaras Hindu University, Varanasi, Uttar Pradesh India to find out the effect of leaf colour chart-based nitrogen and weed management practices on nutrient uptake and yield of direct-seeded rice. Minimum weed index, nutrient content and uptake by weeds and maximum weed control efficiency, yield and nutrient content and uptake by grain and straw were observed with applicationof nitrogen leaf colour chart LCC < 5. Application of pyrazosulfuron 20 g/ha(PE) fb bispyribac 25 g/ha at 15-20 DAS recorded minimum weed index, nutrient content and uptake by weeds and maximum weed control efficiency, rice yield and nutrient content and uptake by rice grain and straw, which was comparable with two hand weedings at 20 and 40 DAS.

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来源
《Indian Journal of Weed Science》 |2020年第4期|318-321|共4页
作者
K. Hemalatha; Yashwant Singh; Sunil Kumar;
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作者单位

Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi,Uttar Pradesh 221 005, India;

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原文格式 PDF
正文语种英语
中图分类植物保护;
关键词
Bispyribac-sodium; Direct-seeded rice; Leaf colour chart; Nutrient uptake; Pyrazosulfuron; Weed control efficiency;

Leaf colour chart-based nitrogen and weed management impacts on weeds, yield and nutrient uptake in dry direct-seeded rice

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