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| Publication Type:
| Refereed |
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| Author(s): | Gasper, John J.;
Street, John R.;
Harrison, S. Kent;
Pound, William E. |
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| Author Affiliation: | Former Graduate Res. Assistant; Associate Professor; Associate Professor; Senior Res. Associate; Department of Agronomics, The Ohio State University, Columbus, OH 43210. |
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| Title: | Pendimethalin efficacy and dissipation in turfgrass as influenced by rainfall incorporation |
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| Source: | Weed Science. Vol. 42, No. 4, October-December 1994, p. 586-592. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Pendimethalin; Efficacy; Digitaria ischaemum; Poa pratensis; Irrigation; Preemergence herbicides
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| Abstract/Contents: | "A 2-yr field study was conducted to determine effects of posttreatment irrigation timing on pendimethalin efficacy and dissipation in turfgrass. Factors investigated included herbicide rate, formulation, and the interval between pendimethalin application and the initial posttreatment irrigation. Plots received an initial posttreatment irrigation of 1.25 cm 0, 7, 14, 21, and 28 d after treatment. Pendimethalin efficacy on smooth crabgrass was evaluated, and turfgrass foliage and the upper 2.5-cm layer of soil were periodically assayed for pendimethalin residues. Pendimethalin 1.71 % granular provided better weed control than pendimethalin 60% wettable powder at all rates, irrigation events, and years. Efficacy of granular pendimethalin was not affected by a delay in posttreatment irrigation, whereas efficacy of pendimethalin in the wettable powder formulation was reduced when irrigation was applied later than the day of treatment. Chromatographic analyses indicated that an average of 54% of the applied pendimethalin (wettable powder formulation) was retained on turfgrass foliage immediately after treatment, compared to 9% for the granular formulation. Soil residue analyses confirmed that a greater proportion of applied pendimethalin reached the soil surface immediately after treatment in the granular formulation than in the wettable power [powder] formulation." |
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| Language: | English |
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| References: | 31 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gasper, J. J., J. R. Street, S. K. Harrison, and W. E. Pound. 1994. Pendimethalin efficacy and dissipation in turfgrass as influenced by rainfall incorporation. Weed Sci. 42(4):p. 586-592. |
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