Data/hora: 08/06/2024 15:23:53

Provedor de dados: 	53	
País: 	Brazil	
Título: 	Copper supply and fruit yield of young Citrus trees: fertiliser sources and application methods	
Autores: 	Hippler,Franz Walter Rieger; Boaretto,Rodrigo Marcelli; Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Mattos-Jr,Dirceu de.	
Data: 	2018-06-01	
Ano: 	2018	
Palavras-chave: 	Micronutrient; Nutritional status; Fertigation; Foliar application; Citriculture.	
Resumo: 	ABSTRACT This study aimed to evaluate the fertiliser sources and application methods of copper (Cu) in citrus trees during the first years of fruit production. Two experiments were set up in an orchard with 3-year-old sweet orange trees, which were applied with three sources of Cu (nitrate, sulfate or EDTA) either via fertigation (Experiment 1) or via foliar sprays (Experiment 2). Regardless of the fertiliser source, Cu application via fertigation was not efficacious to increase the micronutrient concentration in leaves and, consequently, did not affect fruit yield. Conversely, foliar application of Cu, either as nitrate or sulfate, increased this nutrient level in leaves but when applied as copper nitrate, visual phytotoxicity symptoms were verified in leaves due to salt accumulation in the plant canopy, which reduced the fruit yield. Considering the plant growth and intensified phytosanitary management of the orchard with the application of copperbased products after the third year of the experiment, the effects of Cu treatments on fruit yield are expected to be negligible as the trees age.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200365	
Editor: 	Instituto Agronômico de Campinas	
Relação: 	10.1590/1678-4499.2017125	
Formato: 	text/html	
Fonte: 	Bragantia  v.77 n.2 2018	
Fonte: 	info:eu-repo/semantics/openAccess