Effect and safety of nicosulfuron·mesotrione·atrazine and S-metolachlor in controlling spring corn weeds

doi:10.14088/j.cnki.issn0439-8114.2020.14.014

Abstract

Abstract: Using the closed weeding method before single seedling and the single weeding method after seedling in spring maize fields as control, the effects of the closed weeding method before seedling combined with the application method after seedling on Alternanthera Philoxeroides （Mart. Griseb.）, Chenopodium album L. and Artemisia lavandulaefolia DC in the maize fields of Yongzhou city, Hunan province were investigated. The results showed that the pre-emergence spraying S-metolachlor 1 200~1 800 g/hm², combined with post-emergence spraying 28% of nicosulfuron·mesotrione·atrazine 2 100~3 000 g/hm², the three kinds of weeds in seedling after applying pesticide, herbicide, the control effect and fresh weight of 55 d were over 90%, the overall higher than that of individual treatment and long-term effectiveness and safety.

Key words: S-metolachlor, nicosulfuron·mesotrione·atrazine, weeds in corn field, weeding effect, long-term effect, safety

CLC Number:

S482.4

LONG Shui-liang, WU Xiao-feng, LEI Gan-nong, KONG Xuan-qing, JIN Chen-zhong, LI Cheng-ye, OU Xiao-ming, TANG Juan. Effect and safety of nicosulfuron·mesotrione·atrazine and S-metolachlor in controlling spring corn weeds[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(14): 80-84.

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