Kennedy, J.M. and Talbert, R.E. (1977) Comparative persistence of dinitroaniline type herbicides on the soil surface. Weed Science, 25 (5). pp. 373-381.
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Abstract
In field and laboratory experiments over a 3-yr period incorporation of the herbicides into the soil was delayed for 1, 3, and 7 days after application. Herbicidal activity in the soil was assessed by a sorghum bioassay, and by GLC analysis of soil samples. Herbicides least affected by a 2-day delay in incorporation were oryzalin, nitralin, butralin, dinitramine, fluchloralin and penoxalin. Of the herbicides evaluated, trifluralin and profluralin were the least persistent after a 1-day incorporation delay. Losses of nitralin, butralin, dinitramine, fluchloralin, penoxalin, trifluralin, profluralin, benefin and isopropalin increased dramatically when incorporation was delayed 3 or more days. Persistence on the soil surface under field conditions was greatest by oryzalin. After incorporation, dinitramine was the least persistent. The effects of temperature in UV light and darkness on loss of dinitroaniline herbicides were demonstrated in the laboratory by applying the herbicide to TLC plates of soil. While herbicide losses did occur in 24 h of UV light, differences in herbicide losses were not significantly different between butralin, penoxalin, profluralin, trifluralin, isopropalin, oryzalin, nitralin, fluchloralin, and benefin. Dinitramine was the herbicide most affected by the UV light. Butralin, oryzalin, nitralin, isopropalin, and dinitramine were those least affected by 45 C in the dark, with losses of 2 to 10% in 24 h. Profluralin, benefin, and trifluralin were the most volatile, with losses of 35%, 25%, and 18%, in 24 h respectively...
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Agronomy, University of Arkansas, Fayetteville, AR 72701, USA |
| Subjects: | Plant Protection Soil Science and Microbiology > Soil Sciences |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 12 Oct 2012 09:21 |
| Last Modified: | 12 Oct 2012 09:21 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/8424 |
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