Data/hora: 10/06/2024 12:08:58

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 24/08/2018
Data da última atualização: | 25/02/2019
Autoria: | ALVES, G. S.; KRUGER, G. R.; CUNHA, J. P. A. R. da.
Afiliação: | Guilherme Sousa Alves, Universidade Federal de Uberlândia - UFU/Instituto de Ciências Agrárias; Greg Robert Kruger, University of Nebraska-Lincoln; João Paulo Arantes Rodrigues da Cunha, Universidade Federal de Uberlândia - UFU/Instituto de Ciências Agrárias.
Título: | Spray drift and droplet spectrum from dicamba sprayed alone or mixed with adjuvants using air-induction nozzles.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 6, p. 693-702, June, 2018.
Idioma: | Inglês
Notas: | Título em português: Deriva e espectro de gotas de dicamba pulverizado, com ou sem adjuvantes, com uso de pontas com indução de ar.
Conteúdo: | The objective of this work was to evaluate the spray drift and droplet spectrum of dicamba applied alone or with potential drift-reducing adjuvants, using air-induction flat fan nozzles. Standard (XR and TT) and air-induction (AIXR and TTI) nozzles were evaluated in a wind tunnel. The adjuvants used were polymer, ammonium sulfate, vegetable oil, and phosphatidylcholine. The applications were conducted at 276 kPa pressure and 3.5 m s-1 wind speed. The droplet spectrum was measured using a laser diffraction system. Round strings were used as drift collectors, positioned perpendicularly to the wind direction, at 2, 3, 4, 5, 6, 7, and 12 m from the nozzle. Drift was calculated by quantifying, through fluorimetry, a fluorescent tracer added to each solution at 1 g L-1. Droplet spectrum and dicamba drift depend on the interaction between spray composition and nozzle type. Air-induction nozzles are more recommended for dicamba applications, especially the TTI nozzle. Polymer and ammonium sulfate increase droplet size in all nozzle types, which may reduce drift to nearby crops.
Palavras-Chave: | Deriva de herbicida; Ponta com indução de ar; Tamanho de gota; Tipo de ponta de pulverização; Túnel de vento.
Thesaurus Nal: | Droplet size; Wind tunnels.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/181921/1/Spray-drift-and-droplet-spectrum-from-dicamba.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (62934-1) - UPE - AP - DD -  -  -  - DIS