文献类型： 外文期刊
作者： Peng, Yajun 1 ; Cheng, Xiaomei 3 ; Liu, Ducai 3 ; Liu, Xueyuan 3 ; Ma, Guolan 3 ; Li, Sifu 3 ; Yang, Yuting 4 ; Zhang, Yu 1 ;
作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Peoples R China
2.Henan Inst Sci & Technol, Xinxiang 453003, Henan, Peoples R China
3.Hunan Acad Agr Sci, Changsha 410125, Peoples R China
4.Dingyuan Jiahe Crop Protect Co Ltd, Dingyuan 233200, Peoples R China
关键词： Quintrione; Weed; Rice yield; Paddy rice
期刊名称：CROP PROTECTION （ 影响因子：2.571； 五年影响因子：3.11 ）
ISSN： 0261-2194
年卷期： 2021 年 141 卷
页码：
收录情况： SCI
摘要： Weeds present a serious problem in rice paddy fields and severely affect rice (Oryza sativa L.) quality and yield. Quintrione is a new herbicide developed for use in rice. It inhibits p-hydroxyphenylpyruvate dioxygenase and regulates hormone levels to control weeds. In 2014-2016, field plot trials were conducted to evaluate the control efficacies of quintrione at different application rates and times against barnyardgrass, Echinochloa crus-galli (L.) P. Beauv., climbing seedbox, Ludwigia prostrata Roxb., and sheathed monochoria, Monochoria vaginalis (Burm. f.) C. Presl. Its phytotoxic effects on rice were compared with those of pretilachlor, penoxsulam and metamifop in Changsha, China. Quintrione, under the tested conditions, caused various levels of phytotoxicity in rice when applied 3 days after sowing (DAS) only. However, greater than 90% control efficacies against barnyardgrass were achieved by quintrione at 300 g a.i. ha(-1) at 3 DAS, 450 g a.i. ha(-1) at early post-emergence (EPOST) and 600 g a.i. ha(-1) at early tillering (ET), against climbing seedbox at all the tested application rates and times, and against sheathed monochoria at 3 DAS only. Quintrione had a greater control efficacy against climbing seedbox and a similar efficacy against barnyardgrass compared with pretilachlor, penoxsulam and metamifop. Quintrione showed significantly greater, similar and lower efficacies against sheathed monochoria than metamifop, pretilachlor and penoxsulam, respectively. In addition, the rice yields after quintrione treatments were greater than, or similar to, those after pretilachlor, penoxsulam and metamifop treatments. Thus, quintrione appears to be an effective herbicide to control barnyardgrass and climbing seedbox in rice paddies when used at EPOST and ET stages.
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