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首页> 外文期刊>Indian Journal of Weed Science >Effect of different temperature regimes on persistence of imazethapyr and trifluralin.
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Effect of different temperature regimes on persistence of imazethapyr and trifluralin.

机译：不同温度模式对咪唑乙烟和三氟拉林持久性的影响。

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摘要

Temperature is one of the main factors of crop production and it influences herbicide persistence by affecting different herbicide degradation reactions in the soil. To study the persistence of trifluralin and imazethapyr affected by different temperature regimes, an experiment was carried out under lab and screen house conditions at CCSHAU, Hisar. Bioassay technique was used to quantify the persistence by employing sensitive plants of oat and mustard for trifluralin and imazethapyr bioassay, respectively. Soil treated with these herbicides at different rates (trifluralin 0.0, 0.125, 0.25, 0.5, 1.0 and 2.0 kg/ha and imazethapyr 0, 10, 20, 40, 80 and 160 g/ha) after incubation at 15, 25, 35 and 45 degrees C temperature regimes in incubator. Persistence of herbicides affected by different temperature regimes at different herbicide rates was measured by comparing shoot and root growth, fresh and dry weight with control treatment, at different intervals. With increase in incubation temperature of different imazethapyr rates; all growth parameters of mustard except germination, increased, indicating that the increased temperature showed decreased persistence of imazethapyr, with minimum persistence between 35 and 45 degrees C. Whereas trifluralin showed minimum persistence at 25 degrees C and maximum at 15 degrees C as revealed by different growth parameters of oat. In both the herbicides, different growth parameters of test plant decreased with increase in herbicide rate at different temperature incubations pointing that there was increased persistence with increased herbicide rates.
机译：温度是作物生产的主要因素之一，它通过影响土壤中不同的除草剂降解反应来影响除草剂的持久性。为了研究三氟拉林和咪唑乙烟在不同温度下的持久性，在希萨尔CCSHAU的实验室和筛选室条件下进行了实验。使用生物测定技术通过分别使用燕麦和芥末敏感植物分别对三氟拉林和咪唑乙烟进行生物测定来量化持久性。在15、25、35和35℃下孵育后，用这些除草剂以不同的比率（三氟拉林0.0、0.125、0.25、0.5、1.0和2.0千克/公顷和咪唑乙烟碱0、10、20、40、80和160克/公顷）处理的土壤。恒温箱中的温度为45摄氏度。通过比较枝条和根的生长，对照处理在不同间隔下的鲜重和干重，测量了在不同温度范围内以不同除草剂比率影响的除草剂的持久性。随着不同咪唑乙烟酸的孵育温度的升高;除发芽外，所有芥菜生长参数均增加，表明温度升高显示咪唑乙烟的持久性降低，最小持久性在35至45摄氏度之间。而三氟拉林在25摄氏度时表现出最小持久性，在15摄氏度时表现出最大持久性，这通过不同的方法揭示燕麦的生长参数。在这两种除草剂中，在不同温度下，试验植物的不同生长参数均随着除草剂率的增加而降低，这表明随着除草剂率的增加，持久性增加。

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