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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3180.2001.00219.x/epdf
Last checked: 10/13/2015
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| Publication Type:
| Refereed |
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| Author(s): | Oliveira, R. S. Jr.;
Koskinen, W. C.;
Ferreira, F. A. |
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| Author Affiliation: | Oliveira: Departamento de Agronomia, Universidade Estadual de Maringá, Av. Colombo, Maringá, PR, Brazil; Koskinen: USDA-Agricultural Research Service, Department of Soil, Water & Climate, University of Minnesota, St. Paul, MN; Ferreira: Departamento de Fitotecnia, Universidade Federal de Viçosa. Viçosa, MG, Brazil |
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| Title: | Sorption and leaching potential of herbicides on Brazilian soils |
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| Section: | Research papers
Other records with the "Research papers" Section
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| Source: | Weed Research. Vol. 41, No. 2, April 2001, p. 97-110. |
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| Publishing Information: | Oxford: Blackwell Scientific Publications |
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| # of Pages: | 14 |
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| Keywords: | TIC Keywords: Sorption; Leaching; Herbicides; Alachlor; Atrazine; Dicamba; Hexazinone; Imazethapyr; Metsulfuron methyl; Nicosulfuron; Simazine; Sulfometuron; Half-life; Sulfonylurea herbicides; pH; Absorption; Adsorption
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| Geographic Terms: | Brazil |
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| Abstract/Contents: | "Sorption of the herbicides alachlor, atrazine, dicamba, hexazinone, imazethapyr, metsulfuron-methyl, nicosulfuron, simazine and sulfometuron-methyl was characterized on six Brazilian soils, using the batch equilibration method. In general, weak acid herbicides (dicamba, imazethapyr, metsulfuron-methyl, nicosulfuron and sulfometuron-methyl) were the least sorbed, whereas weak bases such as triazines and nonionic herbicides (alachor) were the most sorbed. The Kd values found showed a significant correlation with soil organic carbon content (OC) for all herbicides except imazethapyr and nicosulfuron. Koc values showed a smaller variation among soils than Kd. To estimate the leaching potential, Koc and the ground-water ubiquity score (GUS) were used to calculate half-lives (t1/2) that would rank these herbicides as leachers or non-leachers. Comparison of calculated values to published values for t1/2 demonstrated that sulfonylureas and hexazinone are leachers in all soils, alachlor is transitional, and atrazine, simazine and dicamba are leachers or transitional, depending on the soil type. Results discussed in this paper provide background to prioritize herbicides or chemical groups that should be evaluated in field conditions with regard to their leaching potential to ground-water tropical soils." |
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| Language: | English |
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| References: | 44 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Oliveira, R. S. Jr., W. C. Koskinen, and F. A. Ferreira. 2001. Sorption and leaching potential of herbicides on Brazilian soils. Weed Res. 41(2):p. 97-110. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3180.2001.00219.x/epdf
Last checked: 10/13/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 599 .W4 |
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