Full TGIF Record # 11671
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Publication Type:
i
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Content Type:Abstract or Summary only
Author(s):Tripp, T. N.; Banks, P. A.
Author Affiliation:University of Arkansas, Southeast Research & Ext. Center, Monticello, AR and University of Georgia, Athens, GA, respectively.
Title:Effect of Growth Stage, Tank Mixtures, and Soil Moisture on Large Crabgrass (Digitaria sanguinalis Control with Sethoxydim and Fluazifop
Meeting Info.:Held: January 14-16, 1985, Houston, TX.
Source:Proceedings of the 38th Southern Weed Science Society. Vol. 38, 1985, p. 47.
Publishing Information:Southern Weed Science Society
Keywords:TIC Keywords: Growth; Tank mix; Soil moisture; Digitaria sanguinalis; Sethoxydim; Fluazifop
Abstract/Contents:"Field studies were conducted in 1982 and 1983 to evaluate large crabgrass control with fluazifop-butyl at 0.28 and 0.56 kg/ha or sethoxydim at 0.22 and 0.45 kg/ha alone or in combination with acifluorfen at 0.56 kg/ha or bentazon at 0.84 kg/ha. Each treatment had a nonphytotoxic crop oil added at 0.25% v/v in 1982 and 0.50% v/v in 1983 and was applied to a uniform infestation of large crabgrass growing alone at three stages of growth: 5, 10, and 20 cm. In 1983, the same treatments were also applied to an adjacent plot area planted with soybeans. Control was evaluated by visual ratings 7, 14, and 38 days after application and, where no crop was present, by fresh weights obtained 40 days after each application. Greenhouse studies were conducted to determine the effect on control of applications of sethoxydime at 0.22 and 0.45 kg/ha with bentazon at 0.84 kg/ha or acifluorfen at 0.56 kg/ha either in combination as a tank mix or separately. In another sutdy, the effect on large crabgrass control of soil moisture at the time of application of sethoxydim and fluazifop was determined. Prior to application, large crabgrass was watered daily, every other day, and every third day to create three regimes: wet, moderate, and dry, respectively. In the field studies for both years, large crabgrass control with all treatments, except sethoxydim at 0.45 kg/ha, declined as the large crabgrass height at time of application increased. At the latter two growth stages, sethoxydim at either rate controlled large crabgrass significantly better than either rate of fluazifop. The addition of bentazon to sethoxydim reduced large crabgrass control. Although not significant, there was also a reduction in control by the addition of acifluorfen to sethoxydim. Greenhouse studies indicated decreased large crabgrass control by either rate of sethoxydim when applied in combination with bentazon, but not when sethoxydim and bentazon were applied separately. Acifluorfen did not reduce control when applied with or in combination or separately. Large crabgrass control by sethoxydim at 0.22 kg/ha was reduced when soil moisture was less at aplication. However, there was no difference in control at 0.45 kg/ha. Large crabgrass control by fluazifop was not different at either rate due to soil moisture at time of application."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Tripp, T. N., and P. A. Banks. 1985. Effect of Growth Stage, Tank Mixtures, and Soil Moisture on Large Crabgrass (Digitaria sanguinalis Control with Sethoxydim and Fluazifop. Proc. Meet. South. Weed Sci. Soc. 38:p. 47.
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MSU catalog number: SB 611 .S6 v.38
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