Data/hora: 03/07/2024 12:16:40

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	13/12/2023	
Data da última atualização: 	13/12/2023	
Autoria: 	GIROTO, A. S.; GUIMARAES, G. G. F.; MAJARON, V.; KLAIC, R.; AVANSI, W.; RIBEIRO, C.	
Título: 	Effect of Urea: Hydroxyapatite Composites for Controlled-Release Fertilization to Reduce P Complexation in Soils.	
Ano de publicação: 	2023	
Fonte/Imprenta: 	COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS , Philadelphia, Pennsylvania United States, v. 54, p. 1-11, 2023.	
Idioma: 	Inglês	
Conteúdo: 	Phosphorous fixation in the soil is the most limiting factor for P-management, and previous studies have indicated that coupling nanoparticulated P sources (e.g. hydroxyapatite) in adequate matrices (nanocomposites) can increase nutrient uptake. However, how the nanocomposite affects the P fixation is still an open question. Herein we describe X-ray absorption near edge structure (XANES) experiments to investigate the role of phosphate fertilizer (P) composite in reducing P complexation in soil. Experiments in a greenhouse (maize cultivation) and soil incubation comparatively revealed that a composite formed by the dispersion of hydroxyapatite (phosphate source) into urea could increase the production of dry matter (compared to monoammonium phosphate, MAP), keeping the residual P available in the soil for future cultivations (i.e. not strongly bonded to minerals). This behavior was evidenced by P-XANES, which indicated that the composite induced the bonding of remnant P to more labile organic fractions instead of mineral phases, as seen in MAP cultivation.	
Thesagro: 	Controlled release; fertilizers; P-complexation; P-speciation.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_59642.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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