Data/hora: 01/07/2024 13:28:37

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	17/04/2018	
Data da última atualização: 	17/04/2018	
Autoria: 	FORTES, M. Á.; SOUSA, R. O.; GOMES, A. S.; SCHMIDT, F.; SCIVITTARO, W. B.; FERREIRA, L. H. G.; TEIXEIRA, J. B. S.; VEÇOZZI, T. A.	
Título: 	Phosphorus Availability for Irrigated Rice Cultivated Under No-Tillage and Different Phosphate Sources.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	Journal of Agricultural Science, Toronto, Canada, v. 10, n. 5, p. 276-287, 2018.	
Idioma: 	Inglês	
Conteúdo: 	The objective of this work was to evaluate the response of irrigated rice to phosphate fertilization using triple superphosphate (TSP) and Arad phosphate rock (APR), and the phosphate residual effects of upland crops in no-tillage system on the following rice crop. Also, it aimed to evaluate the efficiency of Mehlich-1 and anion exchange resin as soil P extractors. Two experiments were conducted in Albaqualf soil under irrigated conditions in the southern region of Rio Grande do Sul State. The experiments were designed as random blocks with four replications and the treatments were displayed as a 2 × 2 factorial (TSP and APR, with and without annual P application as TSP). No yield responses to phosphate were observed. Phosphate fertilization performed on upland crops (maize and soybeans) presented a residual effect on the rice crop even after four years of consecutive cropping under no-tillage. The extractors Mehlich-1 and AER were equally efficient in the evaluation of P availability for the rice crop. P content values obtained by both methods did show a significant correlation with accumulated plant P. The APR presents a similar performance as the TSP in regard to phosphate nutrition in irrigated rice when rotated with upland crops under no-tillage system.	
Palavras-Chave: 	lowland; phosphate rock; triple superphosphate.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_40648.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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