Data/hora: 09/06/2024 11:23:31

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Spraying systems and traveling speed in the deposit and spectrum of droplets in cotton plant	
Autores: 	Cavalieri,Jhonatan D.; Raetano,Carlos G.; Madureira,Ronaldo P.; Moreira,Lais L. Q.	
Data: 	2015-12-01	
Ano: 	2015	
Palavras-chave: 	Application technology; Rotary atomizer disk; Rotating nozzle; Gossypium hirsutum L.	
Resumo: 	ABSTRACT Tractor traveling speed can influence the quality of spraying depending on the application technology used. This study aimed to evaluate the droplet spectrum, the deposition and uniformity of spray distribution with different spraying systems and traveling speeds of a self-propelled sprayer in two phenological stages of the cotton plant (B9 and F13). The experimental design was randomized blocks and treatments were three spraying techniques: common flat spray tips; tilted flat jet with air induction, at 120 L ha-1; and rotary atomizer disk, 20 L ha-1, combined with four traveling speeds: 12, 15, 18 and 25 km h-1, with four replications. Spraying deposition was evaluated for both leaf surfaces from the cotton plant apex and base (stage B9) and middle part of the plant (stage F13) with a cupric marker. A laser particle analyzer also assessed the droplet spectrum. The centrifugal power spray system produces more homogeneous droplet spectrum and increased penetration of droplets into the canopy in both phenological stages. Variation on the operating conditions necessary for increased traveling speed negatively influences the pattern of spraying deposits.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000601042	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/1809-4430-Eng.Agric.v35n6p1042-1052/2015	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.35 n.6 2015	
Fonte: 	info:eu-repo/semantics/openAccess