| Texto completo | |
| Autor(es): |
Feresin Gomes, Marcos Henrique
;
Callaghan, Ciaran
;
Sipano Mendes, Antonio Cesar
;
Edler, Karen J.
;
Mattia, Davide
;
de Jong van Lier, Quirijn
;
Pereira de Carvalho, Hudson Wallace
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ACS AGRICULTURAL SCIENCE & TECHNOLOGY; v. 2, n. 2, p. 9-pg., 2022-04-18. |
| Resumo | |
The use of conventional fertilizers is associated with pollution due to leaching and a mismatch between release rates and crop requirements for optimal development. Slow-release fertilizers could address both problems. Here, the synthesis and properties of a zinc fertilizer composed of cellulose microbeads loaded with aqueous ZnSO4 are reported for the first time. UV-vis spectrophotometry showed that the beads immersed in water released all Zn2+ in about 30 min, regardless of the initial Zn2+ concentration. In two sandy substrates (a pure sand and a sandy loam substrate), microprobe X-ray fluorescence spectroscopy determined Zn2+ release from beads to the substrate corresponding to count rates of about 0.115 mm min(-1) s(-1), irrespective of the substrate and with a low sensitivity for the water content, except in a very dry range. These results indicate that these microbeads could represent a practical and sustainable solution for efficient nutrient supply in agriculture. (AU) | |
| Processo FAPESP: | 18/13401-7 - Espectroscopia de raio-X revelando os efeitos do glifosato sobre a absorção foliar de manganês em soja |
| Beneficiário: | Bianca de Almeida Machado |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 15/19121-8 - EMU concedido no processo 2015/05942-0: sistema de microfluorescência de Raios X |
| Beneficiário: | Hudson Wallace Pereira de Carvalho |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 15/05942-0 - Investigação do metabolismo de nanomateriais absorvidos por plantas empregando-se espectroscopias vibracional e de Raios X |
| Beneficiário: | Hudson Wallace Pereira de Carvalho |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |