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Influence of Atomizers Upon Efficacy of Tridiphane plus Atrazine Applied Postemergence

Published online by Cambridge University Press:  12 June 2017

Joseph P. Reed ,
Franklin R. Hall  and
Donald L. Reichard
Joseph P. Reed
Affiliation:
Ohio Agric. Res. Dev. Cent., The Ohio State Univ., Wooster, OH 44691
Franklin R. Hall
Affiliation:
Ohio Agric. Res. Dev. Cent., The Ohio State Univ., Wooster, OH 44691
Donald L. Reichard
Affiliation:
USDA-Agric. Res. Serv., Wooster, OH 44691
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Abstract

Field studies with flatfan, twinjet, flood and rotary atomizers were conducted in 1987 and 1988. The results indicated that tridiphane at 0.6 kg ai/ha plus atrazine at 1.7 kg ai/ha with 2.0 L/ha of soybean oil adjuvant was more effective in controlling giant foxtail and common lambsquarters when applied by the flatfan, twinjet, and rotary atomizers. Image analysis indicated that weed control by a postemergence herbicide was generally enhanced by better application coverage. Droplet size measurement by phase droplet particle/droplet analyzer demonstrated that the rotary atomizer produced a narrower range of droplet diameters between the Dv.1 and Dv.9 volumes than any of the other atomizers.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diaminetridiphane, 2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl)oxiranegiant foxtail, Setaria faberi Herrm. ♯3 SETFAcommon lambsquarters, Chenopodium album L. ♯ CHEALAtrazinedroplet imageflatfanflooding nozzleimage analysisspinning disc nozzlespray coveragetridiphanetwinjet nozzle
Type
Research
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 92 - 96
Copyright
Copyright © 1990 Weed Science Society of America 

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