Author: George W. BaileyPublisher:
ISBN:
Category : Herbicides
Languages : en
Pages : 112
Book Description
Herbicide Runoff from Four Coastal Plain Soil Types
Author: George W. BaileyPublisher:
ISBN:
Category : Herbicides
Languages : en
Pages : 112
Book Description
Herbicide Runoff from Four Coastal Plain Soil Types
Author: Herbicide Runoff from 4 Coastal Plain Soil Types, Errata
Author: Herbicide Contamination of Surface Runoff Waters
Author: John O. EvansPublisher:
ISBN:
Category : Herbicides
Languages : en
Pages : 116
Book Description
Field and laboratory studies of the movement of herbicides were conducted to determine their potential as contaminants in irrigation return flow. Special emphasis was given to the use of herbicides for vegetation control along ditches, canals and watersheds where high dosages are required to control the excessive growth of grasses and broadleaved weeds. The following herbicides have been studies: substituted urea (diuron), triazines (summitol and atrazine), phenoxyacetic acid (2, 4-D and 2, 4, 5-T) and a substituted pyridine (picloram). The greatest tendency for transport of herbicides in water coming in contact with soils occurs during the initial storms following spray application. If the intensity of the initial precipitation is not sufficient to cause movement across the soil, the danger of herbicide movement is essentially eliminated. The highest concentratoins (ppm) of herbicide observed in surface waters were 1.8, 0.5, 4.2 and 2.7 for diuron, summitol, 2, 4-D, 2, 4, 5-T and picloram, respectively. These levels were observed immediately below treated areas receiving the higher recommended dosages of the herbicides. All herbicide concentrations dropped below the limit of detection within a few hundred meters below the sprayed areas. Presumably, soil filtration, adsorption and dilution are primarily responsible for the loss of herbicides from water.
Bibliographies and Literature of Agriculture
Author: EPA-600/9
Author: ORD Publications Summary
Author: United States. Environmental Protection Agency. Office of Research and DevelopmentPublisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 264
Book Description
EPA 440/1
Author: Selected Water Resources Abstracts
Author: Summary of available information on Chesapeake Bay submerged vegetation
Author: J. Court StevensonPublisher:
ISBN:
Category : Marine flora
Languages : en
Pages : 364
Book Description