2 edition of Selected data from field studies of pesticide runoff to surface waters found in the catalog.
Selected data from field studies of pesticide runoff to surface waters
Paul D. Capel
by U.S. Dept. of the Interior, U.S. Geological Survey, Branch of Information Services [distributor] in Sacramento, Calif, Denver, CO
Written in English
|Statement||by Paul D. Capel, Thomas A. Winterstein, and Steven J. Larson.|
|Series||Water-resources investigations report -- 00-4284|
|Contributions||Winterstein, Thomas A., Larson, Steven J., National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.)|
|The Physical Object|
|Pagination||v, 70 p. ;|
|Number of Pages||70|
The Office of Pesticide Programs (OPP) commonly employs the SWRRB (45, 46) and PRZM (8, 9) models for runoff and EXAMS 11 (5), a fate and transport model, for surface waters. These three models are used in conjunction with appropriate databases for soils, chemical properties, and meteorological and other environmental parameters. Studies on pesticide ecotoxi-ment of pesticides is to understand and assess potential cology in tropical aquatic habitats in Central America effects under field conditions, there is a need for expo- weresummarizedbyCastilloetal.(),withemphasis sure and effect studies conducted in natural surface wa- on the pesticide contents in the biota.
This topic is reviewed under the following headings: principles governing pesticide entrainment and transport in runoff; pesticide runoff and loads in surface waters, with extensive data summarized for small plots and single cover catchments reported for ; effects of management on pesticide runoff; and modelling and computer simulation of pesticide runoff. Chemical analysis of surface water conducted in European countries indicates that pesticides are often detected in surface waters. This asks regulatory authorities to consider these monitoring data while re-evaluating pesticide approval and setting appropriate risk mitigation measures. During the years –, the cantons in Switzerland performed , pesticide measurements in surface.
Surface-water, water-quality, and ground-water assessment of the Municipio of Caguas, Puerto Rico, GBW no Water quality of lakes in . comprising surface irrigation return flows Other components "collected" surface return flows from irrigated lands are precipitation runoff, operational spills from distribution systems, effluents from tile drainage and drainage wells, subsurface waters intercepted by natural and man-made open channels, and discharges into irrigation drains by other sectors of society, for example.
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Selected data from field studies of pesticide runoff to surface waters (Water-resources investigations report) [Capel, Paul D] on *FREE* shipping on qualifying offers. Selected data from field studies of pesticide runoff to surface waters (Water-resources investigations report)Author: Paul D Capel.
Citations from the scientific literature for studies that quantified selected pesticides in field runoff or streams were obtained from two computerized bibliographic databases: Chemical Abstracts and AGRICOLA.
Selected data were extracted from studies in field environments that lasted longer than a day and are summarized here. The data extracted from each article, if available, include. Selected data from field studies of pesticide runoff to surface waters Author: Paul D Capel ; Thomas A Winterstein ; Steven J Larson ; Geological Survey (U.S.) ; National Water-Quality Assessment Program.
Selected Data From Field Studies of Pesticide Runoff to Surface Waters Paul D. Capel, Thomas A. Winterstein, and Steven J. Larson ABSTRACT Citations from the scientific literature for studies that quantified selected pesticides in field runoff or streams were obtained from two computerized bibliographic databases: Chemical Abstracts and by: 8.
The studies chosen include peer reviewed scientific literature, government reports, laboratory studies, and those using microcosms and artificial streams and ponds. The authors used this information to develop their overview of pesticide contamination of surface exhaustive compilation of data along with the fundamental science make this book essential for those involved in pesticide use, environmental protection, water quality.
data C. - - Study Duration (months) n Range 50 32 2 2 0 Median 12 12 12 rn - - - - I - - I - - Surface Water 'Qpe z Streams I 16 80 I 52 5 ~. Terbutryn Phenoxy Acids: 2, 4-D 2. 4-D (methyl. The literature on pesticide losses in runoff waters from agricultural fields is reviewed.
For the majority of commercial pesticides, total losses are °70 or less of the amounts applied, unless evere rainfall conditions occur within weeks after application. Exceptions are the organochlorine secticides, which may lose about 1°70 regardless of weather pattern because of their long persistence; and soil surface-applied.
predicting pesticide runoff using measurements from field stud-ies as well as their theoretical foundations. Materials and Methods The models were evaluated using three field studies con-ducted at agricultural fields in California.
Simulated results were compared with measured data on runoff volume, sediment erosion, and pesticide mass in runoff. Capel, P.D., Larson, S.J., Winterstein, T.A., Summary of Selected Data from Field Studies of Pesticide Runoff to Surface Waters, US Geological Survey, Water-Resources Investigations Report, The sampling of surface waters is usually done not directly after the application of pesticides, when the highest entries by drift are expected to occur or after rain events, when the highest entries via runoff or drainage are generally occurring [5, 6].
Despite the limitations in the interpretation of monitoring data, a comparison of the. Studies have shown that steeper agricultural field slopes are associated with higher amount of pesticides or regular occurrence of pesticides in the adjacent surface water resources (Dabrowski et.
The concentration of pesticides in the 0- to 1-cm depth of soil was a good indicator of concentrations and amounts to be expected in runoff water and using the average of three concentrations of methomyl from each peak flow and the flow volume under the peaks resulted in a calculated runoff of g/ha methomyl, which was within ± 2% of the.
Spray drift and edge-of-field runoff are regarded as important routes of nonpoint-source pesticide input into aquatic surface waters, with current regulatory risk assessment in Europe focussing.
Field data from a drained silt loam (considered to represent the 95th percentile worst case for run-off under Swedish conditions) suggest that % of total monthly water flow during summer (May-September) occurs as surface run-off.
Thus, surface run-off may contribute considerably to pesticide transport locally, but is still. Pesticides Found in Surface Waters Past studies have detected pesticides in surface waters in all regions of the nation. Of the hundreds of pesticide compounds that have been used in the United States, however, only 98 pesticides and 20 pesticide transformation products were included as analytes in the reviewed studies.
Finally, the model developed in this study estimated pesticide loss to surface waters while experimental data is load at catchment outlet. Between point of entry and sampling station transformation and sorption processes may occur, hence it is possible that measured loads do not truly reflect total pesticide input.
This report deals primarily with the surface runoff component of agricultural drainage, since it is thought to be a significant non-point source of pesticides in surface waters.
In a previous study, Shelton et al. () developed a classification system for assessing the contamination risk posed by pesticides to surface and groundwater systems. 1. Introduction. Among organic micropollutants monitored in water, pesticides are the most important class of hazardous substances.
For example, in Europe, the Water Framework Directive (WFD; Directive /60/EC) provides strategies against chemical pollution of surface waters and notably established provision for a list of Priority Substances (Annex X of the Directive) . A portion of applied pesticides runs off agricultural fields and is transported through surface waters.
In this study, the behaviour of 39 pesticides is examined as a function of scale across 14 orders of magnitude from the field to the ocean. Data on pesticide loads in streams from two US Geological Survey programs were combined with literature data from field and watershed studies.
- The Pesticide Content of Surface Water Draining from Agricultural Fields.-A Reviewl [ 1 R. D.t AUCHOPE2 ABSTRACT The literature on pesticide losses in runoff waters from agricultural fields is reviewed. For the majority of commercial pesticides, total.
During the past 50 years, the human population has more than doubled and global agricultural production has similarly risen. However, the productive arable area has increased by just 10%; thus the increased use of pesticides has been a consequence of the demands of human population growth, and its impact has reached global significance.
Although we often know a pesticide.Understanding the Occurrence, Transport, and Fate of Current-Use Pesticides in the Environment.
The Pesticide Fate Research project (a part of the USGS Toxic Substances Hydrology Program - Pesticide Studies project) is a series of studies to assess the occurrence, transport, and fate of current-use pesticides in surface and ground waters throughout California.Interpretive Summary: Vegetable production practices combining copper-based pesticides with polyethylene mulch create conditions for highly toxic runoff emissions to surface waters.
Copper hydroxide is a widely used fungicide-bactericide approved for both organic and conventional agricultural production of vegetable crops for control of diseases.