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Effects Of Water On The Fate Of Herbicides In Irrigated Soils, Terry L. Lavy
Effects Of Water On The Fate Of Herbicides In Irrigated Soils, Terry L. Lavy
Technical Reports
The wide use of soil-applied herbicides necessitates an understanding of their fate in soil if we are to use them in the most beneficial manner. All herbicides have some degree of water solubility and the field performance of many are dependent on ample, timely availability of soil moisture. It is important that different aspects of soil-herbicide-water interactions be thoroughly investigated. An excess use of water for irrigation purposes can result in the downward movement of herbicides in the soil profile. Subsoils are less adsorptive and a decreased degradation potential exists when herbicides move below the top 15 cm. In sandy …
Lake Powell Water Quality Programs And Associated Files, A Users' Guide To Programs Powell And Powplot, United States Department Of The Interior, Bureau Of Reclamation
Lake Powell Water Quality Programs And Associated Files, A Users' Guide To Programs Powell And Powplot, United States Department Of The Interior, Bureau Of Reclamation
Water
During the summer of 1980, work began at the Engineering and Research Center, Bureau of Reclamation, to develop a computerized method for analyzing Lake Powell water quality data. Lake Powell, in southeastern Utah is formed by Glen Canyon Dam on the Colorado River at Page, Arizona. This work was carried out by Mr. Greg A. Keller under the supervision of Mr. David H. Merritt in the Colorado River Water Quality Office. By July of 1981, two computer programs, named POWELL and POWPLOT, had been produced. This document is intended to provide guidance for the user of these programs.