Micronutrient-controlled-release protein-based systems for horticulture: Micro vs. nanoparticles

Abstract

Fertilization is an increasingly common practice in horticulture. Nevertheless, the conventionally used fertilization method is ineffective, and it generates contamination problems due to excess nutrients. Therefore, new technologies, such as nanofertilization or controlled-release systems of fertilizers, are currently being tested. Thus, the main objective of this work was to develop controlled-release systems for micronutrients, using soy protein as raw material. Different micronutrients (zinc, copper, iron, and manganese) were evaluated, as well as their incorporation in the form of micro and nanoparticles. The mechanical and functional properties (water uptake capacity, biodegradability, and micronutrient release) of the systems, as well as their use in crops, were studied to assess their viability. The results showed the great potential of these systems to incorporate micronutrients into crops, especially when combined with nanotechnology, improving the benefits of conventional fertilization. Download : Download high-res image (146KB) Download : Download full-size image