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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/28/6/JEQ0280061760
Last checked: 12/12/2016
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| Publication Type:
| Refereed |
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| Author(s): | Chandran, Rakesh S.;
Derr, Jeffrey F. |
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| Author Affiliation: | Chandran: Department of Plant Pathology, Physiology, and Weed Science, Virginia Polytechnic Institute and State Univerisity, Blacksburg, VA; Derr: Department of Plant Pathology, Physiology, and Weed Science, Virginia Polytechnic Institute and State University, HRAREC, Virginia Beach, VA |
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| Title: | Isoxaben dissipation in field soil as affected by application timing |
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| Section: | Technical reports: Organic compounds in the environment
Other records with the "Technical reports: Organic compounds in the environment" Section
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| Source: | Journal of Environmental Quality. Vol. 28, No. 6, November/December 1999, p. 1760-1764. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Application rates; Isoxaben; Application timing; Preemergence herbicides; Pesticide fate; Herbicide residues; HPLC
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| Geographic Terms: | Blacksburg, Virginia |
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| Abstract/Contents: | "Timing of preemergence (PRE) herbicide application is critical for effective weed management in turfgrass and ornamentals. Information on soil dissipation, as affected by application timing and rate, is needed when using preemergence herbicides for weed control. Field studies were established at Blacksburg, VA, to determine the effect of spring, fall, and a double (spring followed by fall) application on the dissipation of isoxaben applied at 0.56, 0.84, and 1.12kg a.i. ha⁻¹. The half-life of isoxaben was estimated to be 2.7mo following spring application, 5.7mo following fall application, and 6.1mo following spring plus fall application. Application rate did not affect the degradation pattern of isoxaben following spring or fall application. Residues of isoxaben at 3 and 6 months after treatment (MAT) following fall application at 1.12 kg ha⁻¹ were higher than that following spring application. A positive correlation (γ = 0.62) was determined between daily isoxaben breakdown rate and mean ambient daily temperatures following the two application timings. Degradation following fall application may be slower than that following spring application due to lower microbial activity during winter months. Negligible levels of the herbicide remained in the top 3.8cm of soil 9mo following spring or fall application. Double application of isoxaben resulted in higher mean levels of isoxaben residues than single spring or fall application at 0, 1, 6, and 9MAT." |
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| Language: | English |
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| References: | 17 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chandran, R. S., and J. F. Derr. 1999. Isoxaben dissipation in field soil as affected by application timing. J. Environ. Qual. 28(6):p. 1760-1764. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/28/6/JEQ0280061760
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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