Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synergy of Phosphate-Controlled Release and Sulfur Oxidation in Novel Polysulfide Composites for Sustainable Fertilization

Full text
Author(s):
do Valle, Stella Fortuna [1, 2] ; Giroto, Amanda Soares [2] ; Gestal Reis, Heitor Pontes [3] ; Guimaraes, Gelton G. F. [4] ; Ribeiro, Caue [2]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
[2] Embrapa Instrumentat, BR-13560970 Sao Carlos, SP - Brazil
[3] UNESP Botucatu, Av Univ, BR-18610034 Botucatu, SP - Brazil
[4] Agr Res & Rural Extens Co Santa Catarina, BR-88318112 Itajai, SC - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of Agricultural and Food Chemistry; v. 69, n. 8, p. 2392-2402, MAR 3 2021.
Web of Science Citations: 0
Abstract

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 Baytivar rock (Bay) or struvite (Str). The polysulfide 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 microorganisms' 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/dm(3) for Bay composites, while for pure Bay, it was 9 mg/dm(3). (AU)

FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 18/10104-1 - Nanocomposites Preparation from Urea modified with Glycerol for optimization of Process of Controlled Release of Nutrients
Grantee:Amanda Soares Giroto
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 16/09343-6 - DEVELOPMENT AND AGRONOMIC EVALUATION OF A NEW FERTILIZER BASED ON NANOCOMPOSITES SULFUR-PHOSPHATE MINERAL
Grantee:Gelton Geraldo Fernandes Guimarães
Support type: Scholarships in Brazil - Post-Doctorate