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INFLUENCE OF TEMPERATURE, SOIL HUMIDITY AND SOIL DEPTH ON THE PERSISTENCE OF DIURON AND ENDOSULFAN SULFATE IN A TROPICAL SOIL

机译:温度,土壤湿度和土壤深度对热带土壤中Diuron和Endosulfan硫酸盐的持久性的影响

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INFLUENCE OF TEMPERATURE, SOIL HUMIDITY AND SOIL DEPTH ON THE PERSISTENCE OF DIURON AND ENDOSULFAN SULFATE IN A TROPICAL SOIL. The influence of temperature (30 and 40 degrees C) and soil humidity (20, 50 and 70% of water holding capacity) on the degradation of the herbicide diurom and the endosulfan metabolite, endosulfan sulfate was studied under laboratory conditions, in different soil layers (0-30, 30-38 and 38-83 cm) of an Oxisol (Yellow Latosol) collected in an agricultural area of Mato Grosso State, Brazil. Endosulfan sulfate was rapidly degraded under lower soil humidity, higher temperature and deeper soil layers. For diurom the opposite was observed as a consequence of its higher water solubility and lower soil sorption coefficient.
机译:温度,土壤湿度和土壤深度对热带土壤中Diuron和Endosulfan硫酸盐的持久性的影响。在实验室条件下,研究了温度(30和40摄氏度)和土壤湿度(持水量的20%,50%和70%)对除草剂二urom和硫丹代谢产物硫酸硫丹的降解的影响。 (0-30、30-38和38-83厘米)的Oxisol(黄色Latosol)收集在巴西马托格罗索州的一个农业地区。在较低的土壤湿度,较高的温度和较深的土壤层下,硫酸硫丹迅速降解。对于二铝,由于其较高的水溶性和较低的土壤吸附系数而观察到相反的结果。

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