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Publication Type:
| Report |
Author(s): | Bentley, P. W.;
Keeling, J. W.;
Dahl, B. E. |
Author Affiliation: | Bentley and Keeling: Texas Agricultural Experiment Station; Dahl: Texas Tech University, Lubbock, TX |
Title: | Tolerance of selected CRP grasses to herbicides |
Section: | Weed control in turf, pasture, and rangeland Other records with the "Weed control in turf, pasture, and rangeland" Section
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Meeting Info.: | Nashville, Tennessee: January 16-18, 1989 |
Source: | Proceedings: Southern Weed Science Society. Vol. 42, 1989, p. 137. |
Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
# of Pages: | 1 |
Abstract/Contents: | "To date, approximately 1.2 million hectares of highly erodible cropland on the Texas Southern High Plains have been enrolled in the Conservation Reserve Program (CRP). An experiment was established in 1988 to determine the response to preemergence or postemergence herbicide applications of 12 grasses that are approved for CRP seedings. Herbicides evaluated included chlorsulfuron, metasulfuron, trisulfuron, atrazine, propazine, and dicamba, each applied at 1X and 2X rates. Grass species included three lovegrass varieties, three bluestem varieties, two sideoats varieties, blue grama, Kleingrass, switchgrass, and Indiangrass. Grasses were planted in pots containing a loamy fine sand with 0.2% organic matter. Preemergence herbicide applications were made prior to grass planting and postemergence applications were made 10 days after grass emergence. Visual injury ratings were made 4 and 8 weeks after application and total grass weight per pot was determined. Significant differences in grass injury and dry weight were determined between application method, grass species, and herbicide. Preemergence applications of chlorsulfuron, metasulfuron, trisulfuron, atrazine, propazine, and dicamba injured all grasses and significantly reduced total dry matter production. Little grass injury resulted from postemergence applications. Total dry weight ranged from 16 to 58 grams per pot. Lehman's lovegrass was the only grass injured by postemergence applications of chlorsulfuron or trisulfuron. This study indicates that preemergence applications of these herbicides will significantly injure grass and reduce stand establishment. Postemergence applications may slightly reduce grass growth, but this should be offset by benefits of reduced weed competition." |
Language: | English |
References: | 0 |
Note: | "Finding a common ground" This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Bentley, P. W., J. W. Keeling, and B. E. Dahl. 1989. Tolerance of selected CRP grasses to herbicides. South. Weed Sci. Soc. Proc. 42:p. 137. |
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