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| Publication Type:
| Refereed |
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| Author(s): | McWhorter, Chester G.;
Barrentine, William L.;
Hanks, James E. |
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| Author Affiliation: | McWhorter: Phant Physiologist, Application Technical Research Unit, Agricultural Research Service, U.S. Department of Agriculture; Barrentine: Plant Physiologist, Delta Research and Experiment Cente, Mississippi Agriculture for Forestry Exploration Station; and Hanks: Application of Technical Research Services, U.S. Department of Agriculture, Stoneville, Mississippi |
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| Title: | Postemergence grass control with herbicides applied at ULV in paraffinic oil |
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| Source: | Weed Technology. Vol. 6, No. 2, April-June 1992, p. 262-268. |
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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: Postemergence herbicides; Postemergence weed control; Weed control; Spray volumes; Mineral oil; Sprayers; Sorghum halepense; Echinochloa crusgalli; Clethodim; Haloxyfop; Sethoxydim; Quizalofop; Fluazifop
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| Abstract/Contents: | "Variables affecting ultra-low-volume (ULV) application of herbicides for posemergence grass control in soybeans were evaluated in field experiments from 1988 to 1990. Air-assist application of clethodim at 2.3 and 4.7 L ha-1 were compared with 94 and 187 L ha-1 applications with a conventional hydraulic sprayer. Rate of herbicide, volume of diluent, type of diluent, air pressure, and four other herbicides were evaluated. Clethodim at 28, 56, and 112 g ha-1 applied in paraffinic oil at 2.3 L ha-1 controlled johnsongrass better 10 wk after treatement than equivalent rates applied at 2.3 or 187 L ha-1 in water. At 2.3 L ha-1, barnyardgrass control was improved by applying clethodim in paraffinic oil rather than water. Johnsongrass control 10 wk after treatment was better with clethodim at 28 g ha-1 applied in paraffinic oil than when applied in soybean oil, cottonseed oil, No. 2 diesel fuel, kerosene, or jet A fuel. Low air pressure of 14 or 28 kPa resulted in better control of johnsongrass and barnyardgrass than higher pressures of 56 and 112 kPa. Clethodim, fluazifop-P, haloxyfop, quizalofop, or sethoxydim were more effective on johnsongrass and barnyardgrass when applied in paraffinic oil than in water at 2.3 and 4.7 L ha-1 with an air-assist sprayer." |
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| Language: | English |
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| References: | 16 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McWhorter, C. G., W. L. Barrentine, and J. E. Hanks. 1992. Postemergence grass control with herbicides applied at ULV in paraffinic oil. Weed Technol. 6(2):p. 262-268. |
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