Xinjiang Agricultural Sciences ›› 2025, Vol. 62 ›› Issue (4): 954-961.DOI: 10.6048/j.issn.1001-4330.2025.04.020

• Plant Protection · Prataculture • Previous Articles     Next Articles

Effects of different factors on the efficacy of Thaxtomin A against Convolvulus arvensis L. and Abutilon theophrasti Medicus

GUO Rui1,2(), CHEN Yong1, WANG Xuejing1, LI Kemei1(), SONG Suqin2,3()   

  1. 1. College of Agriculture, Xinjiang Agricultural University, Urumqi 830052, China
    2. Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Ministry of Agriculture and Rural Affairs /Institute of Plant Protection,Xinjiang Uygur Autonomous Region Academy of Agricultural Sciences,Urumqi 830091,China
    3. Xinjiang Key Laboratory of Special Environmental Microorganisms /Institute of Microbiology, Xinjiang Uygur Autonomous Region Academy of Agricultural Sciences, Urumqi 830091, China
  • Received:2024-09-21 Online:2025-04-20 Published:2025-06-20
  • Supported by:
    Fostering Highlevel Evperts in Agriculture and Animal Husbandry(2024SNGGGCC033);Earmark Fund of Key S&T Innovation Incubation Project of Xinjiang Academy of Agricultural Sciences “The Thaxtomins Yield Difference Analysis of Pathogenic Toxin of Potato Scab Disease and Its Weeding Performance of Weeds in Xinjiang”(xjkcpy-202203);Key R & D Program Project of the Xinjiang Uygur Autonomous Region “Research and Integrated Application of Green, High-Yield and High-Efficiency Potato Technology in Xinjiang ”(2022B02044-2)

不同环境因子对Thaxtomin A防除田旋花和苘麻药效的影响

郭瑞1,2(), 陈勇1, 汪雪晶1, 李克梅1(), 宋素琴2,3()   

  1. 1.新疆农业大学农学院,乌鲁木齐 830052
    2.新疆维吾尔自治区农业科学院植物保护研究所/农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室,乌鲁木齐 830091
    3.新疆维吾尔自治区农业科学院微生物研究所/新疆特殊环境微生物重点实验室,乌鲁木齐 830091
  • 通讯作者: 李克梅(1972-), 女,江苏如皋人,教授,博士,硕士生导师,研究方向为农作物病害虫综合防控,(E-mail)likemei@xjau.edu.cn;宋素琴(1976-),女,山西长治人,研究员,研究方向为微生物活性产物及作物病害,(E-mail)suqin_song@163.com
  • 作者简介:郭瑞(1999-),女,甘肃酒泉人,硕士研究生,研究方向为马铃薯疮痂病致病链霉菌分离鉴定及代谢产物活性,(E-mail)1522017534@qq.com
  • 基金资助:
    天山英才-高层次农牧人才(2024SNGGGCC033);新疆农业科学院科技创新重点培育专项“马铃薯疮痂病病原菌致病毒素Thaxtomins产量差异分析及其对新疆农田杂草的除草性能研究”(xjkcpy-202203);新疆维吾尔自治区重点研发任务专项“新疆马铃薯绿色高产高效栽培技术研究与集成应用”(2022B02044-2)

Abstract:

【Objective】 This project aims toclarify the action characteristics of the new biological herbicide Thaxtomin A (TA) in Convolvulus arvensis L. and Abutilon theophrasti Medicus.Finding from which provides a research basis for the practical application of TA. 【Methods】 The effects of different environmental factors (temperature, humidity and rainfall after application) and soil factors (soil organic matter content and soil pH) on the herbicidal activity of TA against Convolvulus arvensis L. and Abutilon theophrasti Medicus were studied by indoor bioassay method. 【Results】 The results showed that at 35℃ / 30℃, 50% humidity, soil pH = 9 and high organic matter content, TA had the best control effect on Convolvulus arvensis. However, 0.5 h rainfall after application would significantly reduce the control effect and should be sprayed again. At 30℃/ 25℃, 70% humidity, soil pH = 8.0, and low soil organic matter content, TA had the best control effect on Abutilon theophrasti. Rainfall within 1 h after application would reduce its control effect, and appropriate amount of pesticide should be applied. 【Conclusion】 Different climatic factors and soil factors have significant effects on the efficacy of TA, At the same time, for different weeds, the changes of environmental factors have different effects on the efficacy of TA. Different temperatures,humidity,duration of light exposure,rainfall after pesticide application,soil organic matter and soil pH value has a certain impact on the herbicidal activity of TA.

Key words: TA; herbicidal activity; environmental factors; Convolvulus arvensis L.; Abutilon theophrasti Medicus

摘要:

【目的】研究新型生物除草剂Thaxtomin A(TA)在田旋花和苘麻作用特性,为TA的实际应用提供理论基础。【方法】采用常规室内生物测定法,分析不同环境因子(温度、湿度和施药后降雨)和土壤因子(土壤有机质含量和土壤pH值)对TA防除田旋花和苘麻除草活性的影响。【结果】在35℃/30℃、50%湿度、土壤pH=9和有机质含量较高时,TA对田旋花其防除效果最佳,但是在施药后0.5 h降雨,会明显降低防效,应再次喷施;在30℃/25℃、70%湿度、土壤pH=8.0、土壤有机质含量较低时,TA对苘麻防效最佳,在施药后1 h内降雨,均会降低其防效,应适量补施药剂。【结论】不同气候因子和土壤因子对TA药效具有显著影响,而不同杂草种类环境因子的改变,对TA防效的影响不同,不同温度、湿度、光照时长、施药后降雨、土壤有机质和土壤pH值对其除草活性均有一定影响。

关键词: TA, 除草活性, 环境因子, 田旋花, 苘麻

CLC Number: