Control Efficacy of Pyroxasulfone on Weeds in Corn Field

作     者：DUAN Gui-fang SUN Teng 段桂芳;孙腾

作者机构：Shanghai GreenTech Laboratory Co.Ltd.Shanghai 201612PRC 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2022年第23卷第4期

页      码：40-44页

摘      要：To explore the control efficacy of 85%pyroxasulfone water-dispersible granule(WG)on annual weeds in corn field as well as its safety,a randomized block design was used to conduct a field plot test of efficacy at four different test *** sowing before seedling,85%pyroxasulfone WG at the doses of 10,15,20,and 40 g/667 m^(2),and 55%acetochlor+atrazine suspension concentrate(SC,control agent)at the dose of 170 g/667 m^(2)in summer corn area and 260 g/667 m^(2)in spring corn area were applied,*** test site without herbicide application was used as the blank *** results revealed that after 40 d of application,the control efficacy of 85%pyroxasulfone WG reached 83.75%~98.23%on Gramineae weeds,55.22%~98.33%on broadleaf weeds,and 88.03%~98.46%on Cyperaceae weeds,but without toxicity to *** with 55%acetochlor+atrazine SC,85%pyroxasulfone WG at the dose of more than 10 g/667 m^(2)had higher control efficacy on Gramineae weeds,lower efficacy on broadleaf weeds and similar efficacy on Cyperaceae *** sum up,spraying 85%pyroxasulfone WG at the dose of 15~20 g/667 m^(2)(an active component dose of 191.3~255.0 g/hm^(2))after sowing before seedling could effectively control some annual weeds in corn fields and had no toxicity to *** herbicide dose was greatly reduced,and thus 85%pyroxasulfone WG was recommended as an effective mean to control the main weeds in corn fields.

主 题 词：85%Pyroxasulfone WG Corn Weed control efficacy 

学科分类：09[农学] 0904[农学-动物医学类] 

D　O　I：10.16175/j.cnki.1009-4229.2022.04.006

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