Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee
In 1989, the U.S. Geological Survey began a long-term project to evaluate the effectiveness of agricultural best management practices (BMP's) on controlling soil erosion and improving water quality in the Beaver Creek watershed in West Tennessee. The Beaver Creek watershed consists of about 95,...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1995
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA445557 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA445557 |
id |
ftdtic:ADA445557 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA445557 2023-05-15T15:41:00+02:00 Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee Olsen, Lisa D. GEOLOGICAL SURVEY WASHINGTON DC 1995 text/html http://www.dtic.mil/docs/citations/ADA445557 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA445557 en eng http://www.dtic.mil/docs/citations/ADA445557 Approved for public release; distribution is unlimited. DTIC Agricultural Engineering Water Pollution and Control *WATERSHEDS *WATER QUALITY *SOIL EROSION MANAGEMENT CHEMICALS LONG RANGE(TIME) PESTICIDES RUNOFF CONTAMINATION GROUND WATER SAMPLING GEOLOGICAL SURVEYS BEAVER CREEK WEST TENNESSEE Text 1995 ftdtic 2016-02-22T02:14:11Z In 1989, the U.S. Geological Survey began a long-term project to evaluate the effectiveness of agricultural best management practices (BMP's) on controlling soil erosion and improving water quality in the Beaver Creek watershed in West Tennessee. The Beaver Creek watershed consists of about 95,000 acres and includes some of the Nation's most productive farmland and most highly erodible soils. Resource-management agencies in this locality have recommended conservation tillage or "no-tillage" as a BMP to control soil erosion. Unlike conventional tillage, in which the top 1 foot of soil is turned over by a moldboard plow before planting, no-tillage preserves the natural structure of the soil and retains the crop residues from the previous growing season . No-tillage reduces soil erosion and runoff by slowing the flow of rainwater from the field. However, by preserving the macroporosity of the soil (by not tilling up old root channels and earthworm pathways), no-tillage has been found in some cases to accelerate chemical movement through the soil, increasing the potential for groundwater contamination (Dick and others, 1989; Hall and others, 1989; Isensee and others,1990). The risk of ground-water contamination associated with the implementation of no-tillage needs to be addressed. Because the relation between no-tillage and chemical movement depends upon the climate and soils of a specific region, a field-level study was conducted to compare pesticide behavior in no-tilled and conventionally tilled soils in West Tennessee. In 1993, the U.S. Geological Survey, in cooperation with the Tennessee Department of Agriculture, initiated an investigation of pesticide movement and degradation in soils. This fact sheet summarizes the goals of the study, the methods used, and the results of the pesticide analyses of the soil samples taken during the 1993 growing season. Additional details of this investigation are presented in Olsen and others, 1994. Prepared in cooperation with Tennessee Univ., Agricultural Extension Service, Memphis, TN. Text Beaver Creek Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Agricultural Engineering Water Pollution and Control *WATERSHEDS *WATER QUALITY *SOIL EROSION MANAGEMENT CHEMICALS LONG RANGE(TIME) PESTICIDES RUNOFF CONTAMINATION GROUND WATER SAMPLING GEOLOGICAL SURVEYS BEAVER CREEK WEST TENNESSEE |
spellingShingle |
Agricultural Engineering Water Pollution and Control *WATERSHEDS *WATER QUALITY *SOIL EROSION MANAGEMENT CHEMICALS LONG RANGE(TIME) PESTICIDES RUNOFF CONTAMINATION GROUND WATER SAMPLING GEOLOGICAL SURVEYS BEAVER CREEK WEST TENNESSEE Olsen, Lisa D. Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
topic_facet |
Agricultural Engineering Water Pollution and Control *WATERSHEDS *WATER QUALITY *SOIL EROSION MANAGEMENT CHEMICALS LONG RANGE(TIME) PESTICIDES RUNOFF CONTAMINATION GROUND WATER SAMPLING GEOLOGICAL SURVEYS BEAVER CREEK WEST TENNESSEE |
description |
In 1989, the U.S. Geological Survey began a long-term project to evaluate the effectiveness of agricultural best management practices (BMP's) on controlling soil erosion and improving water quality in the Beaver Creek watershed in West Tennessee. The Beaver Creek watershed consists of about 95,000 acres and includes some of the Nation's most productive farmland and most highly erodible soils. Resource-management agencies in this locality have recommended conservation tillage or "no-tillage" as a BMP to control soil erosion. Unlike conventional tillage, in which the top 1 foot of soil is turned over by a moldboard plow before planting, no-tillage preserves the natural structure of the soil and retains the crop residues from the previous growing season . No-tillage reduces soil erosion and runoff by slowing the flow of rainwater from the field. However, by preserving the macroporosity of the soil (by not tilling up old root channels and earthworm pathways), no-tillage has been found in some cases to accelerate chemical movement through the soil, increasing the potential for groundwater contamination (Dick and others, 1989; Hall and others, 1989; Isensee and others,1990). The risk of ground-water contamination associated with the implementation of no-tillage needs to be addressed. Because the relation between no-tillage and chemical movement depends upon the climate and soils of a specific region, a field-level study was conducted to compare pesticide behavior in no-tilled and conventionally tilled soils in West Tennessee. In 1993, the U.S. Geological Survey, in cooperation with the Tennessee Department of Agriculture, initiated an investigation of pesticide movement and degradation in soils. This fact sheet summarizes the goals of the study, the methods used, and the results of the pesticide analyses of the soil samples taken during the 1993 growing season. Additional details of this investigation are presented in Olsen and others, 1994. Prepared in cooperation with Tennessee Univ., Agricultural Extension Service, Memphis, TN. |
author2 |
GEOLOGICAL SURVEY WASHINGTON DC |
format |
Text |
author |
Olsen, Lisa D. |
author_facet |
Olsen, Lisa D. |
author_sort |
Olsen, Lisa D. |
title |
Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
title_short |
Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
title_full |
Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
title_fullStr |
Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
title_full_unstemmed |
Pesticide Movement in Soils: A Comparison of No-Tillage and Conventional Tillage in the Beaver Creek Watershed in West Tennessee |
title_sort |
pesticide movement in soils: a comparison of no-tillage and conventional tillage in the beaver creek watershed in west tennessee |
publishDate |
1995 |
url |
http://www.dtic.mil/docs/citations/ADA445557 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA445557 |
genre |
Beaver Creek |
genre_facet |
Beaver Creek |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA445557 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766373871171141632 |