Data/hora: 06/06/2024 01:21:49

Provedor de dados: | 64
País: | Brazil
Título: | Drift curves from spray applications on commom bean crop
Autores: | Bueno,Mariana Rodrigues; Cunha,João Paulo Arantes Rodrigues da; Santana,Denise Garcia de.
Data: | 2016-12-01
Ano: | 2016
Palavras-chave: | Droplet size; Spray nozzle; Exponential regression; Application technology.
Resumo: | ABSTRACT In order to avoid the occurrence of drift in pesticide applications, it is fundamental to know the behavior of sprayed droplets. This study aimed to determine drift curves in pesticide applications on common bean crop under brazilian weather conditions, using different nozzle types and compared them with the "German" and "Dutch" drift prediction models. The experiment was conducted in Uberlândia, Minas Gerais/Brazil, in completely randomized design with ten replications and 4 x 20 split-plot arrangement in space. Drift deposited on collectors located over ground level was resulted by 150 L ha-1 carrier volume applications through four nozzle types (XR 11002 (fine droplets); AIXR 11002 (coarse droplets); TT 11002 (medium droplets); TTI 11002 (extremely coarse droplets)), collected in 20 downwind distances, parallel to the crop line outside the target area, spaced by 2.5 m. The tracer rhodamine B was added to the spray to be quantified by fluorimetry. Drift prediction models adjusted by exponential functions were obtained considering the 90th percentile for XR, TT, AIXR and TTI nozzles. It is suggested to use the estimated drift models from this study for each nozzle type in drift prediction evaluations on bean crops under brazilian weather conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600621
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-70542016406016716
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.40 n.6 2016
Fonte: | info:eu-repo/semantics/openAccess