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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Herbicide Safeners Increase Waxy Maize Tolerance to Nicosulfuron and Affect Weed Control
Author(s)
Lanlan Sun1, Renhai Wu2, Wangcang Su2, Zenggui Gao1 and Chuantao Lu2
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DOI:10.17265/2161-6256/2016.06.003
Affiliation(s)
1. Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
2. Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
ABSTRACT
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.
KEYWORDS
Cyprosulfamide, Digitaria sanguinalis, Echinochioa crus-galli, isoxadifen-ethyl, phytotoxicity.
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