Full TGIF Record # 75488
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Minihan, Cathy L.; Peterson, Dallas E.; Wolf, Robert E.; Dieleman, J. Anita
Author Affiliation:Minihan: Graduate Research Assistant; Peterson: Professor; and Dieleman: Assistant Professor, Department of Agronomy Wolf: Assistant Professor, Department of Biological and Agricultural Engineering; Kansas State University, Manhattan, KS
Title:The influence of spray volumes and spray tips on paraquat and glyphosate efficacy
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. 27.
# of Pages:1
Publishing Information:Champaign, IL: North Central Weed Science Society
Keywords:TIC Keywords: Spray volumes; Spraying equipment; Paraquat; Glyphosate; Herbicide rates; Postemergence herbicides
Abstract/Contents:"Studies were conducted to determine the influence of spray volumes and spray tips on paraquat and glyphosate (trimesium salt) efficacy. Cultivated 'Don' oats were planted and herbicides were applied in two experiments, early postemergence and late postemergence. Experiments were conducted with a factorial design of two herbicides, three spray tips, and three spray volumes. The herbicides and rates were paraquat at 0.14kg/ha and glyphosate at 0.23 kg/ha. Extended Range Flat Fan, Turbo TeeJet, and Air Induction spray tips ere used, and pressure was adjusted for each of these tips to achieve the desired volumes of 19, 38, and 79 L/ha. The early postemergence (EPOST) experiment was treated on April 19, 2000, and the late postemergence (LPOST) experiment was treated on May 5, 2000. Oats were measured at the time of application and were 15 and 51 cm at EPOST and LPOST, respectively. Visual control ratings were taken at 1,2, and 4 weeks after treatment (WAT). In the EPOST experiment at 2 WAT, spray tip selection did not have an effect on glyphosate efficacy when averaged across spray volumes. However, when averaged across spray volumes, Air Induction and Turbo TeeJet spray tips gave better control than Extended Range Flat Fan spray tips when paraquat was applied. No effects were found in this experiment with different volumes averaged across herbicides and spray tips. In the LPOST experiment, oat control was better with volumes of 19 and 38 L/ha than with the 79 L/ha, when averaged across herbicides and spray tips. Oat control was not different among the Extended Range Flat Fan, Turbo TeeJet, and Air Induction spray tips when averaged across herbicides and spray volumes. Better control of LPOST oats was achieved with 19 and 38 L/ha spray volumes than 79 L/ha, but the spray volume did not affect the control of EPOST oats. Air Induction and Turbo TeeJet spray tips provided equal or better oat control than the Extended Range Flat Fan spray tips, regardless of herbicides or oat size."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Minihan, C. L., D. E. Peterson, R. E. Wolf, and J. A. Dieleman. 2000. The influence of spray volumes and spray tips on paraquat and glyphosate efficacy. Proc. North Cent. Weed Sci. Soc. 55:p. 27.
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