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| Publication Type:
| Refereed |
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| Author(s): | Zimdahl, Robert L.;
Cranmer, Brian K.;
Stroup, Walter W. |
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| Author Affiliation: | Prof.; Res. Assoc., Weed Res. Lab, Dep. Plant Pathol. and Weed Sci., Colorado State Univ.; Prof. Dep. Biometry, Univ. Nebraska, Lincoln |
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| Title: | Use of empirical equations to describe dissipation of metribuzin and pendimethalin |
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| Source: | Weed Science. Vol. 42, No. 2, April-June 1994, p. 241-248. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Metribuzin; Pendimethalin; Soil moisture; Soil temperature; Mathematical equations
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| Abstract/Contents: | "Four equations were evaluated as predictors of the rate of herbicide dissipation in soil. A biexponential equation was superior to the first-order equation for metribuzin and pendimethalin dissipation under five moisture levels and three temperatures in laboratory and field studies. The Hoerl function, adapted in the course of this work, is also a good descriptor. The first-order equation predicts slower initial and more rapid later dissipation than actually occurs and these deficiencies are not shared by the biexponential or Hoerl equations. The first-order equation ignores small residues remaining late in the dissipation process. These residues are important from an environmental point of view and the Hoerl and biexponential equations are more capable of dealing with them." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zimdahl, R. L., B. K. Cranmer, and W. W. Stroup. 1994. Use of empirical equations to describe dissipation of metribuzin and pendimethalin. Weed Sci. 42(2):p. 241-248. |
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