Data/hora: 16/06/2024 08:14:38

Biblioteca(s): | Epagri-Sede.
Tipo da produção científica: | Artigo em Periódico Indexado
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)
Exemplares: | Epagri-Sede - (109049-1) - UPC - AP - DD -  -  -  - DIS