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

Micronutrients encapsulation by starch as an enhanced efficiency fertilizer

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Chiaregato, Camila Gruber ; Faez, Roselena [1]
Total Authors: 2
[1] Univ Fed Sao Carlos, Lab Polymer Mat & Biosorbents, UFSCar, BR-13600970 Araras, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Carbohydrate Polymers; v. 271, NOV 1 2021.
Web of Science Citations: 0

Developing different paths to achieve sustainable agriculture is no longer an option; it is a necessity. EEF materials are alternatives to improve the efficacy of the agrochemicals in the soil and plant, reducing wasting and environmental contamination. The present work aims to develop EEF materials based on starch and micronutrients, considering few works address EEFs materials with micronutrients. Monoelementary dispersions of gelatinized starch with micronutrients (Fe, Cu, Mn) were spray-dried and thermally, structurally, and morphologically characterized. We evaluated water-medium nutrient release, release kinetics, and the swelling degree. Different micronutrients affect morphology, size distribution, swelling degree, release, kinetics, and interaction between polymer-nutrient. Bigger particle sizes achieved a higher swelling degree, which led to decreased micronutrient release in the water. The Peppas-Sahlin model mainly ruled the release kinetics (fitted to all the materials). This result confirmed our hypothesis that a swelling starch delays the release. (AU)

FAPESP's process: 19/02535-5 - Polymeric structures as host matrices for-release nutrients: environmentally friendly fertilizers
Grantee:Roselena Faez
Support type: Regular Research Grants
FAPESP's process: 19/02793-4 - Development of materials containing macro and micronutrients for programmed release: sustainable agriculture
Grantee:Camila Gruber Chiaregato
Support type: Scholarships in Brazil - Master