Control Effects and Safety of Post-Emergence Herbicides in the Field with Soybean-Maize Intercropping
A field plot experiment was conducted to explore the control effects and safety of five post-emergence herbicides for soybean and five post-emergence herbicides for maize on weeds in the field with soybean-maize intercropping.The results showed that quizalofop-P-ethyl·fomesafen 35%EW and fluoroglycofen 10%EC demonstrated good control effects(85.61%and 84.34%,respectively)on the weeds in soybean rows 14 days after application.The control effects of fluroxypyr-meptyl 288 g/L EC and mesotrione·atrazine 30%OD were 90.04%and 87.34%,respectively,on the weeds in maize rows.Moreover,the phytotoxicity index decreased gradually over time,which indicated that the herbicides were safe for soybean and maize.Compared with the control,the tested herbicides increased the yields of soybean and maize by 11.18%-19.42%and 13.11%-25.77%,respectively.The four herbicides at the recommended doses can control annual and perennial weeds in the field with soybean-maize intercropping and be applied and promoted in production.
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