Micronutrients encapsulation by starch as an enhanced efficiency fertilizer

Autor(es)

Chiaregato, Camila Gruber ; Faez, Roselena ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Lab Polymer Mat & Biosorbents, UFSCar, BR-13600970 Araras, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Carbohydrate Polymers; v. 271, NOV 1 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 19/02535-5 - Estruturas poliméricas como matrizes hospedeiras para nutrientes de liberação programada: fertilizantes ambientalmente amigáveis
• Beneficiário: Roselena Faez
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/02793-4 - Desenvolvimento de materiais contendo macro e micronutrientes para liberação programada: uma agricultura sustentável
• Beneficiário: Camila Gruber Chiaregato
• Modalidade de apoio: Bolsas no Brasil - Mestrado