Data/hora: 17/06/2024 02:33:08

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 04/05/2021
Data da última atualização: | 10/06/2022
Autoria: | VALLE, S. F. do; GIROTO, A. S.; REIS, H. P. G.; GUIMARÃES, G. G. F.; RIBEIRO, C.
Afiliação: | CAUE RIBEIRO DE OLIVEIRA, CNPDIA.
Título: | Synergy of phosphate-controlled release and sulfur oxidation in novel polysulfide composites for sustainable fertilization.
Ano de publicação: | 2021
Fonte/Imprenta: | Journal of Agricultural and Food Chemistry, v. 69, 2021.
Páginas: | 2392&#8722;2402
DOI: | https://dx.doi.org/10.1021/acs.jafc.0c07333
Idioma: | Inglês
Conteúdo: | The development of smart and eco-friendly fertilizers is pivotal to guarantee food security sustainably. Phosphate rock and struvite are promising alternatives for P fertilization; nevertheless, the solubility of these sources is a challenge for consistent use efficiency. Here, we propose using a polysulfide obtained via inverse vulcanization as a novel controlled-release fertilizer matrix in a system containing either Bayovar rock (Bay) or struvite (Str). The polysul ́ fide provides S for plants after being biologically oxidized to sulfate in soil, generating local acidity for P solubilization. After 15 days of soil incubation, the composites with 75 wt % Str and 75 wt % Bay achieved, respectively, 3 and 2 times the S oxidation from the elemental sulfur reference. Results indicated that P content stimulates the soil microorganismsʼ activity for S oxidation. The matrix had a physical role in improving Bay dissolution and regulating the rapid release from Str. Moreover, the available P in soil was 25−30 mg/dm3 for Bay composites, while for pure Bay, it was 9 mg/dm3 .
Palavras-Chave: | Fertilizer; Inverse vulcanization; Polysulfide; Struvite.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (17767-1) - UPC - AP - DD - PROCI.21/29 -  - 2021/29 - DIS