Full TGIF Record # 75974
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Bartee, Sam N.; Bernard, M. Stanley
Author Affiliation:Bartee: Bartee Agrichemical Consultants, Inc., Olathe, KS; Bernard: Cedar Chemical Corporation, Memphis, TN
Title:2,4-DB Formulation comparisons in midwest soybean broadleaf weed control
Section:Equipment and application methods
Other records with the "Equipment and application methods" Section
Meeting Info.:Columbus, OH: December 14-16, 1999
Source:Proceedings of the North Central Weed Science Society. Vol. 55, December 2000, p. 117.
# of Pages:1
Publishing Information:Champaign, IL: North Central Weed Science Society
Keywords:TIC Keywords: 2,4-DB; Broadleaf weed control; Glyphosate; Visual evaluation; Herbicide combinations
Abstract/Contents:"For many years, 2,4-DB,[4-(2,4-dichlorophenoxy) butanoic acid], formulated as the dimethylamine salt (liquid) has been tank mixed with other soybean postemergence (POST) herbicides to aid in control of broadleaf weeds. One major limitation of applying liquid 2,4-DB to indeterminate soybean varieties has been possible plant injury and subsequent yield reductions. Generally liquid 2, 4-DB rates have been limited to < 0.5 oz ai./A (2 oz/A of liquid formulated product) to minimize potential soybean injury. Field trials were conducted during a two-year period (1998-99) comparing two 2,4-DB formulations to determine different responses of indeterminate soybeans, visual broadleaf weed control, and impact on soybean yield. The dimethylamine salt (liquid) was compared to the 2, 4-DB acid formulation (dry). Several studies included 2,4-DB formulations tank mixed with glyphosate. During all field trials, the dry 2,4-DB formulation applied at 0.5 oz ai./A did not produce some soybean stem epinasty, occasional shortening of main stem internodes or slight reduction in blooms. At equivalent rates, the dry formulation provided improved broadleaf weed control compared to the liquid formulation. The addition of dry 2,4-DB at 0.5 oz ai./A to glyphosate at 1 lb ai./A improved control of common ragweed, velvetleaf, tall waterhemp, and morningglory species compared to glyphosate applied alone. Soybean yields were not reduced in any field trial where the dry formulation was applied at 0.5 oz ai./A. Where broadleaf weed pressure was moderate, the addition of 2,4-DB to the tank mixture improved weed control and subsequently increased soybean yield."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bartee, S. N., and M. S. Bernard. 2000. 2,4-DB Formulation comparisons in midwest soybean broadleaf weed control. Proc. North Cent. Weed Sci. Soc. 55:p. 117.
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