SBICafé
Biblioteca do Café

Spray retention on coffee leaves associated with type and concentration of adjuvants

Show simple item record

dc.contributor.author Cação, José E. da C. R.
dc.contributor.author Moreira, Bruno R. de A.
dc.contributor.author Raetano, Carlos G.
dc.contributor.author Carvalho, Fernando K.
dc.contributor.author Prado, Evandro P.
dc.date.accessioned 2021-12-06T12:59:46Z
dc.date.available 2021-12-06T12:59:46Z
dc.date.issued 2019
dc.identifier.citation CAÇÃO, J. E. C. R. et al. Spray retention on coffee leaves associated with type and concentration of adjuvants. Engenharia Agrícola, Jaboticabal, v. 39, n. 5, p. 623-629, set./out. 2019. pt_BR
dc.identifier.issn 1809-4430
dc.identifier.uri http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v39n5p623-629/2019 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/12900
dc.description.abstract Agricultural spray adjuvants (ASA) are widely used in pesticide applications to enhance the performance of pesticides. The aim of this research was to investigate the effects of ASA on static surface tension (SST) and foliar spray retention on coffee leaves. The SST of ASA at different concentrations was determined by the drop weight method. Spray retention on adaxial and abaxial coffee leaf surfaces was performed using a micro-sprayer at solution concentrations of 0, 0.01, 0.1, 0.5, and 1.0% v v-1. The ASA assessed were: polyether-polymethylsiloxane-copolymer (PPC); Nonylphenol ethoxylate; nonyl polyethylene glycol ether; mineral oil; nonylphenoxy polyethoxy ethanol; carboxyl copolymer of styrene and butadiene; primary aliphatic oxyalkylated alcohol plus carboxyl copolymer of styrene and butadiene; and soyal phospholipids and propionic acid. All ASA reduced the SST of the aqueous solutions. PPC provided the best performance in decreasing SST, reaching values below 20 mN m-1 at a concentration of 0.05% v v-1. Spray retention on leaves was influenced by adjuvant type as well as concentration. A very strong positive correlation between SST and spray retention on coffee leaves was observed. Decreasing the SST of the solution provided a reduction of spray retention when spraying was performed until run-off point. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Associação Brasileira de Engenharia Agrícola pt_BR
dc.relation.ispartofseries Engenharia Agrícola;v.39, n.5, 2019
dc.rights Open Access pt_BR
dc.subject Surfactant pt_BR
dc.subject Run-off pt_BR
dc.subject Spreading area pt_BR
dc.subject Pesticide application technology pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title Spray retention on coffee leaves associated with type and concentration of adjuvants pt_BR
dc.type Artigo pt_BR

Files in this item

Files Size Format View
Eng. Agric _v. 39_n. 5_p. 623 - 629_2019.pdf 1.134Mb application/pdf View/Open ou Pre-visualizar

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Sobre o SBICafé

Browse

My Account