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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Holloway, C. Jr.;
Cole, A. W.;
Lilwah, R. |
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| Author Affiliation: | Department of Plant Pathology and Weed Science, Mississippi State University, Mississippi |
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| Title: | Activity of metsulfuron methyl over time at various soil pHs |
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| Meeting Info.: | San Antonio, TX: January 14-16, 1991 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 44, 1991, p. 196. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Metsulfuron; Soil pH; Lolium multiflorum; Soil types; Emergence
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| Abstract/Contents: | "Field experiments to determine the effects of pH on metsulfuron methyl activity were conducted on two soil types in 1989. A Prentiss fine sandy loam was adjusted from pH 5.1 to 5.9, 6.2, 6.4 and 6.7, and an Okolona silty clay was adjusted from pH 6.2 to 6.5, 6.8 and 7.1 with lime applications in October, 1989. Metsulfuron was applied at 22 g ai ha-1 in May 1990 and a 10 cm plug of soil was removed from each plot and taken to the greenhouse immediately after treatment. Plugs were removed to the greenhouse from each plot at 21 day intervals through five sampling dates (SD). Ten Itialian ryegrass (Lolium multiflorum) seeds were planted into each pot on each sampling date and covered with 40 ml of sand. Emergence counts were taken at 3 day intervals for 24 days after planting (DAP). At 25 DAP, ryegrass height and shoot dry weight was recorded. Ryegrass emergence from the Prentiss fine sandy loam was reduced throughout the first three SD across all pHs, and at the highest pH across all SD. Height was also reduced at all pHs in the first and second SD, and at pH 6.5 and 6.7 at all SD. Individual shoot dry weight showed no difference after the second SD. Ryegrass emergence from the Okolona silty clay was reduced at the first SD, but no differences occurred by the third SD. Height reduction occurred at the first and second SD across all pHs, but by the fourth SD no reduction occurred. Individual shoot dry weight was not consistent when compared to emergence and height. Ryegrass response at 9 weeks after application indicated that metsulfuron methyl had significantly degraded in both soil types. However at the highest pH in either soil type plant response continued." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Holloway, C. Jr., A. W. Cole, and R. Lilwah. 1991. Activity of metsulfuron methyl over time at various soil pHs. South. Weed Sci. Soc. Proc. 44:p. 196. |
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MSU catalog number: SB 611 .S6 |
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