Data/hora: 07/06/2024 03:31:00

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying	
Autores: 	Chaim,Aldemir; Pessoa,Maria Conceição Peres Young; Camargo Neto,João; Hermes,Luiz Carlos.	
Data: 	2002-04-01	
Ano: 	2002	
Palavras-chave: 	Agricultural chemicals; Aerial application; Application methods; Density; Volume.	
Resumo: 	The main objective of this work was to compare two methods to estimate the deposition of pesticide applied by aerial spraying. Hundred and fifty pieces of water sensitive paper were distributed over an area of 50 m length by 75 m width for sampling droplets sprayed by an aircraft calibrated to apply a spray volume of 32 L/ha. The samples were analysed by visual microscopic method using NG 2 Porton graticule and by an image analyser computer program. The results reached by visual microscopic method were the following: volume median diameter, 398±62 mum; number median diameter, 159±22 mum; droplet density, 22.5±7.0 droplets/cm² and estimated deposited volume, 22.2±9.4 L/ha. The respective ones reached with the computer program were: 402±58 mum, 161±32 mum, 21.9±7.5 droplets/cm² and 21.9±9.2 L/ha. Graphs of the spatial distribution of droplet density and deposited spray volume on the area were produced by the computer program.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000400010	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/S0100-204X2002000400010	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.37 n.4 2002	
Fonte: 	info:eu-repo/semantics/openAccess