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You searched for: Journal name Transactions of the ASAE Remove constraint Journal name: Transactions of the ASAE Subject term atrazine Remove constraint Subject term: atrazine Text availability Full Text Remove constraint Text availability: Full Text
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1. Prediction of pesticide losses in surface runoff from agricultural fields using GLEAMS and RZWQM

Author:
Chinkuyu, A.; Meixner, T.; Gish, T.; Daughtry, C.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 585-599
ISSN:
0001-2351
Subject:
GLEAMS model; atrazine; fields; agricultural runoff; herbicide residues; seepage; losses from soil; nonpoint source pollution; metolachlor; Root Zone Water Quality Model; prediction; Maryland
Abstract:
... Seepage zones have been shown to be of critical importance in controlling contaminant export from agricultural watersheds. To date, no multipurpose agricultural water quality model has seepage zones incorporated into its process-level representations. We chose to test two widely used models of agricultural water quality, the Groundwater Loading Effects of Agricultural Management Systems (GLEAMS) a ...
Handle:
10113/5494

2. Relationship between herbicide concentration in percolate, percolate breakthrough time, and number of active macropores

Author:
Malone, R.W.; Shipitalo, M.J.; Meek, D.W.
Source:
Transactions of the ASAE 2004 v.47 no.5 pp. 1453-1456
ISSN:
0001-2351
Subject:
chemical concentration; macropores; atrazine; no-tillage; soil pollution; plowing; macropore flow; equations; herbicide residues; infiltration (hydrology); leaching; regression analysis; Root Zone Water Quality Model; alachlor; Iowa
Abstract:
... Identification of the major factors affecting herbicide transport through macropores improves our understanding of preferential flow and aids in the development and use of macropore-flow models, such as the Root Zone Water Quality Model (RZWQM). Recent research suggests that macropore-flow breakthrough time (bt) and the number of percolate-producing macropores (nmacro) affect herbicide concentrati ...
Handle:
10113/9715

3. Using RZWQM to predict herbicide leaching losses in subsurface drainage water

Author:
Bakhsh, A.; Ma, L.; Ahuja, L.R.; Hartfield, J.L.; Kanwar, R.S.
Source:
Transactions of the ASAE 2004 v.47 no.5 pp. 1415-1426
ISSN:
0001-2351
Subject:
atrazine; groundwater contamination; herbicide residues; metribuzin; leaching; drainage water; nonpoint source pollution; metolachlor; Root Zone Water Quality Model; tile drainage; subsurface drainage; prediction
Abstract:
... Improvements have been made in the pesticide component of the Root Zone Water Quality Model (RZWQM) since its release in 1999 for the Management System Evaluation Areas (MSEA) project. This study was designed to evaluate the herbicide leaching component of the model using data on subsurface drainage flow and herbicide leaching losses for a 6-year (1992 to 1997) period. A sensitivity analysis was c ...
Handle:
10113/9714

4. Modeling transport of atrazine through calcareous soils from south Florida

Author:
Shinde, D.; Savabi, M.R.; Nkedi-Kizza, P.; Vazquez, A.
Source:
Transactions of the ASAE 2001 v.44 no.2 pp. 251-258
ISSN:
0001-2351
Subject:
atrazine; soil water movement; sorption; sorption isotherms; leaching; calcareous soils; simulation models; Florida
Abstract:
... A study was carried out on water and pesticide transport in three calcareous soils (Perrine, Krome, and Chekika) of South Florida. Tritium and bromide were used as tracers for water flow and atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) was used as a probe chemical representing neutral organic compounds. Atrazine sorption isotherms were linear for all soils, and atrazine transpo ...
Handle:
10113/26635

5. Seasonal occurrence and export of five herbicides from a North Carolina Coastal Plain watershed

Author:
Novak, J.M.; Watts, D.W.; Stone, K.C.; Johnson, M.H.
Source:
Transactions of the ASAE 2001 v.44 no.5 pp. 1201-1206
ISSN:
0001-2351
Subject:
water pollution; atrazine; cyanazine; agricultural land; herbicide residues; watersheds; losses from soil; streams; seasonal variation; metolachlor; alachlor; ametryn; coastal plains; North Carolina
Abstract:
... Herbicide detection in surface water sources has caused concern about contamination of these sources and adverse effects on human and aquatic health. Understanding surface water herbicide transport from agriculturally intensive watersheds is useful for development of herbicide best management practices to reduce off-site movement. The seasonal occurrence and load of five herbicides exported by a s ...
Handle:
10113/18427

6. Atrazine and carbofuran transport through the vadose zone in the Claiborne aquifer recharge area

Author:
Bosch, D.D.; Truman, C.C.; Leonard, R.A.
Source:
Transactions of the ASAE 2000 v.43 no.6 pp. 1609-1620
ISSN:
0001-2351
Subject:
atrazine; carbofuran; water quality; sandy soils; Georgia
Abstract:
... A 1-ha field plot with a sandy surface soil, located near Plains, Georgia, was studied for three years (from 1993 to 1995) to evaluate pesticide transport in the vadose zone. Vadose zone soil samples were collected 23 times: prior to the initial 1993 pesticide application, each year at approximately 1, 3, 7, 14, 28, and 44 days after pesticide application, each fall after harvest, and in the sprin ...
Handle:
10113/14354

7. Transport comparison of technical grade and starch-encapsulated atrazine

Author:
Gish, T.J.; Schoppet, M.J.; Helling, C.S.; Shirmohammadi, A.; Schreiber, M.M.; Wing, R.E.
Source:
Transactions of the ASAE 1991 v.34 no.4 pp. 1738-1744
ISSN:
0001-2351
Subject:
atrazine; encapsulation; groundwater; leaching; starch; microirrigation; water pollution
Abstract:
... The feasibility of using starch-encapsulated atrazine to minimize convective transport under conditions favoring preferential flow was evaluated. Forty small, undisturbed, soil columns (45 cm2 X 3 cm) were removed from an established no-tillage management site and randomly grouped into one of five atrazine treatments: 1) technical grade; 2) borate process, starch-encapsulated; 3) jet-cooked, pearl ...
Handle:
10113/24432