Full TGIF Record # 38680
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Webster, Eric P.; Shaw, David R.
Author Affiliation:Research Assistant; Professor, Department Plant and Soil Science, Mississippi State University, Mississippi State, MS 39762
Title:Impact of vegetative filter strips on herbicide loss in runoff from soybean (Glycine max)
Source:Weed Science. Vol. 44, No. 3, July-September 1996, p. 662-671.
Publishing Information:Champaign, IL: Weed Science Society of America
# of Pages:10
Keywords:TIC Keywords: Metolachlor; Metribuzin; Runoff water; Festuca arundinacea; Herbicide concentrations; Filter strips; Tillage
Abstract/Contents:"Metolachlor and metribuzin loss in runoff was determined in three soybean tillage systems with and without a 4 by 2 m tall fescue vegetative filter strip. Soil erosion plots were 4 by 22 m with 3% slope. Regression analysis was used to describe herbicide concentration in runoff, and to determine if vegetative filter strips reduced herbicide concentration. Analysis of covariance indicated no difference in concentration of metolachlor or metribuzin in runoff from the three tillage systems within any vegetative filter strip treatment. Metolachlor loss in 1991 was highest from the no-till monocrop without a vegetative filter strip, and it was 65 g ha⁻¹ or approximately 2% of the amount applied. In 1992 and 1993, the no-till doublecrop had a total loss of 120 and 147 g ha⁻¹, respectively, approximately 4% of the amount applied. Similar results were noted with metribuzin, but total loss was as high as 46 g ha⁻¹ or 11% of the amount applied in 1993 from a no-till doublecrop system without a vegetative filter strip. When a vegetative filter strip was present, losses of metribuzin and metolochlor were reduced over 85% in 1993, and totaled 1.2 and 0.5% respectively, of the anount applied. The vegetative filter strip reduced herbicide and suspended solids from runoff produced by a conventional-till production system to levels equal to or lower than a no-till doublecrop system."
Language:English
References:24
Note:Figures
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Webster, E. P., and D. R. Shaw. 1996. Impact of vegetative filter strips on herbicide loss in runoff from soybean (Glycine max). Weed Sci. 44(3):p. 662-671.
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