The Influence of Filter Mud Compost and Tithonia diversifolia Leaves on the Dissipation of Diuron in Soils within the Nzoia River Drainage Basin, Kenya.

摘要

The aim of the study was to evaluate the environmental impact of filter mud compost and Tithonia diversifoila amendments on the dissipation of diuron in sugarcane cultivated soils. Filter mud compost is the by-product of sugarcane processing, while T. diversifoila is a common local plant that grows within the study region. The dissipation of diuron was significantly enhanced with DT(50) of 15 and 16[NON-BREAKING SPACE]days (p[NON-BREAKING SPACE]<[NON-BREAKING SPACE]0.05) in soils amended with filter mud compost and T. diversifoila, respectively compared to 26[NON-BREAKING SPACE]days in non-amended soils. Residues of 0.93[NON-BREAKING SPACE]%, 1.83[NON-BREAKING SPACE]% and 5.40[NON-BREAKING SPACE]% of the initial applied diuron were recorded at the end of the experiment in the three treatments, respectively. The residues of 3,4-dichlorophenylmethylurea metabolite were 22.93[NON-BREAKING SPACE]%, 25.92[NON-BREAKING SPACE]% and 30.93[NON-BREAKING SPACE]%, while 10.19[NON-BREAKING SPACE]%, 12.19[NON-BREAKING SPACE]% and 15.46[NON-BREAKING SPACE]% of 3,4-dichloroaniline metabolite remained in soil after 112[NON-BREAKING SPACE]days in the three treatments, respectively.