Herbicide Safeners Increase Waxy Maize Tolerance to Nicosulfuron and Affect Weed Control  

作　　者：Lanlan Sun Renhai Wu Wangcang Su Zenggui Gao Chuantao Lu 

机构地区：[1]Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China [2]Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China

出　　处：《Journal of Agricultural Science and Technology(A)》2016年第6期386-393,共8页农业科学与技术（A）

摘　　要：Safeners are an important tool used to ensure the safe using of herbicide. This research was conducted to determine the effects of nicosulfuron alone and in combination with herbicide safeners on waxy maize （Zea mays L. var. ceratina Kulesh） injury, as well as on barnyard grass （Echinochioa crus-galli） and large crabgrass control （Digitaria sanguinalis L. Scop）. Whole-plant experiments were conducted under laboratory condition, by using post emergence treatment with safeners and nicosulfuron. The results showed that the herbicide safeners isoxadifen-ethyl （IE） and cyprosulfamide （CS） were more effective in reducing waxy maize injury from nicosulfuron than fenchlorazole-ethyl （FE）, cloquintocet-mexyl （CM） and mefenpyr-diethyl （MD）. Whole-plant dose-response experiments showed that nicosulfuron in combination with IE or CS increased its herbicidal activities against barnyard grass and large crabgrass. To confirm the result, a mixture of IE or CS and nicosulfuron were sprayed on waxy maize in the field, by using a backpack plot sprayer with a flat-fan nozzle. The mixture led to lower phytotoxicity than nicosulfuron alone. The mixture tested did not affect the maize grain weight. The results showed that IE and CS could enhance crop safety and extend the use of nicosulfuron on waxy maize.

关 键 词：Cyprosulfamide Digitaria sanguinalis Echinochioa crus-galli isoxadifen-ethyl phytotoxicity. 

分 类 号：S482.4[农业科学—农药学] S511[农业科学—植物保护]