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

Strategy for Multinutrient Application in Integrated Granules Using Zein as a Coating Layer

Full text
Author(s):
Bortoletto-Santos, Ricardo [1, 2] ; Plotegher, Fabio [1] ; Roncato, Vanderlei [2] ; Majaron, Rafaela F. [3] ; Majaron, Vinicius F. [3] ; Polito, Wagner L. [2] ; Ribeiro, Caue [1]
Total Authors: 7
Affiliation:
[1] Embrapa Instrumentacao, LNNA, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Campus Sao Carlos, Ave Trabalhador Sao Carlens 400, BR-13566590 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Quim, Rodovia Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Agricultural and Food Chemistry; v. 66, n. 37, p. 9582-9587, SEP 19 2018.
Web of Science Citations: 2
Abstract

The efficiency of phosphate fertilizers is strongly limited by the acidity and high iron content and aluminum based compounds in soils due to high P fixation. Coatings have been proposed as an alternative solution to reduce P losses by controlling the fertilizer release, but the literature is not conclusive about the most adequate material for that purpose. Herein we report a novel Zn-based coating for monoammonium phosphate (MAP) granules comprising ZnO nanoparticles and zein as a bicoating structure. Samples were prepared by dispersing ZnO and zein on the MAP surface and characterized, comparing the release in neutral and acidic solutions over time. Coating thickness/quality determined the nutrient release by a physical barrier effect. The results show that the zein coating overprotection avoids a fast nutrient release, keeping the local acid medium necessary to suppress ZnPO4 precipitation. A range of 2.5 to 10.0 wt % of zein was studied, indicating that 2.5 wt % coatings just present significant release control, which is similar until 10.0 wt % coating. (AU)

FAPESP's process: 17/11149-6 - Development of nanocomposites based on elemental sulfur for conveying micronutrients to soil
Grantee:Fábio Plotegher
Support Opportunities: Scholarships in Brazil - Innovative Research in Small Business - PIPE