Droplet Spectra and Drift Potential Generated by Flat-Fan Nozzles Spraying New Formulations of 2,4-D Engineered for Drift Reduction

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dc.contributor.authorAntuniassi, Ulisses R. [UNESP]
dc.contributor.authorMoreira, Caio A. F. [UNESP]
dc.contributor.authorChechetto, Rodolfo G.
dc.contributor.authorPinheiro, Ana Cristina T. C.
dc.contributor.authorLucio, Felipe R.
dc.contributor.authorFritz, B. K.
dc.contributor.authorButts, T. R.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgroEfetiva
dc.contributor.institutionCorteva Agrisciences
dc.date.accessioned2019-10-04T11:55:34Z
dc.date.available2019-10-04T11:55:34Z
dc.date.issued2018-01-01
dc.description.abstractThe aim of this work was to analyze the effect of spray solutions containing new formulations of 2,4-D choline salt (Enlist (TM) with Colex-D (TM) and Enlist Duo (TM) with Colex-D) on the droplet spectra and drift potential generated by flat-fan nozzles. The experimental design included comparisons between solutions with a single herbicide in it: 2,4-D dimethylamine salt (DMA (TM) 806 BR) and 2,4-D choline salt (Enlist with Colex-D). We also compared the premix of 2,4-D choline salt and glyphosate dimethylamine salt (Enlist Duo Colex-D) with tank mixtures of the 2,4-D dimethylamine salt with three different formulations of glyphosate (Glizmax Prime, Roundup Transorb R, and Zapp QI). Labeled rates of the herbicides were diluted to 80 L ha land sprayed with flat-fan nozzles at 2.8 bar (Teejet XR11002 and AIXR11002). The volume median diameter and the percentage of droplets smaller than 105 p.m (V105) were obtained using an online particle-size analysis system. The drift index was calculated based on data collected in a wind tunnel at a wind speed of 2.5 m s-1. The amount of drift deposited on nylon strings at 2 m downwind from the nozzle was converted to a percentage of the total volume of spray solution sprayed on each replication. The results showed that the new formulation of 2,4-D choline salt engineered for drift reduction (Enlist Colex-D) provided lower drift potential based on both the droplet spectra and the wind tunnel data compared to the standard 2,4-D dimethylamine salt. The same result was found when comparing the premix of 2,4-D choline salt and glyphosate dimethylamine salt with tank mixtures of 2,4-D dimethylamine salt with glyphosate, regardless of whether glyphosate formulation was part of the tank mixture.en
dc.description.affiliationSao Paulo State Univ, R Dr Jose Barbosa Barros 1780, BR-18610307 Botucatu, SP, Brazil
dc.description.affiliationAgroEfetiva, R Pinheiro Machado 689, BR-18600180 Botucatu, SP, Brazil
dc.description.affiliationCorteva Agrisciences, Alameda Itapecuru 506, BR-06454080 Barueri, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, R Dr Jose Barbosa Barros 1780, BR-18610307 Botucatu, SP, Brazil
dc.format.extent1-10
dc.identifierhttp://dx.doi.org/10.1520/STP161020170182
dc.identifier.citationPesticide Formulation And Delivery Systems: 38th Volume, Innovative Application, Formulation, And Adjuvant, Technologies. West Conshohocken: Astm International, v. 1610, p. 1-10, 2018.
dc.identifier.doi10.1520/STP161020170182
dc.identifier.issn0066-0558
dc.identifier.urihttp://hdl.handle.net/11449/184169
dc.identifier.wosWOS:000453650400001
dc.language.isoeng
dc.publisherAstm International
dc.relation.ispartofPesticide Formulation And Delivery Systems: 38th Volume, Innovative Application, Formulation, And Adjuvant, Technologies
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectglyphosate
dc.subject2,4-D choline salt
dc.subjectformulations
dc.subjectwind tunnel
dc.subjectnozzles
dc.titleDroplet Spectra and Drift Potential Generated by Flat-Fan Nozzles Spraying New Formulations of 2,4-D Engineered for Drift Reductionen
dc.typeTrabalho apresentado em evento
dcterms.rightsHolderAstm International

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