Data/hora: 09/06/2024 09:43:56

Provedor de dados: 	53	
País: 	Brazil	
Título: 	Phosphorus fractions in apple orchards in southern Brazil	
Autores: 	Schmitt,Djalma Eugênio; Brunetto,Gustavo; Santos,Elaine dos; Wagner,Winiciu de Lima; Sete,Paula Beatriz; Souza,Monique; Ambrosini,Vítor Gabriel; Santos,Matheus Ademir dos; Tiecher,Tales; Comin,Jucinei José; Couto,Rafael da Rosa; Gatiboni,Luciano Colpo; Giachini,Admir.	
Data: 	2017-07-01	
Ano: 	2017	
Palavras-chave: 	Apple orchard; Phosphate fertilization; P chemical fractionation.	
Resumo: 	ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultivated with apple trees. Soil samples were collected from an area with no history of cultivation and 2 apple orchards cultivated for 8 (P8) and 18 (P18) years, in the city of Urubici, Santa Catarina, southern Brazil. Soil samples were air dried, sieved in a 2-mm mesh, and subjected to chemical analyses (P adsorption) besides P chemical fractionation. Applications of phosphate fertilizers to the orchards, particularly P18, increased the inorganic and organic concentrations of P in all fractions. The distribution of P in organic and inorganic forms in the planted soils was similar to the distribution observed for the native vegetation soil. The highest inorganic labile P fraction, the lowest maximum P adsorption capacity, and the highest equilibrium concentration values at P18 are indicators of a higher environmental pollution risk of the orchards soils compared to the native soil.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300422	
Editor: 	Instituto Agronômico de Campinas	
Relação: 	10.1590/1678-4499.173	
Formato: 	text/html	
Fonte: 	Bragantia  v.76 n.3 2017	
Fonte: 	info:eu-repo/semantics/openAccess