Eficiência de fertilizantes organominerais com tecnologia EXES⁺ em culturas de grãos no sistema plantio direto

• Ano de defesa: 2026
• Autor(a) principal: Rubin, Alex de Mello
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; Brasil; UFSM; Programa de Pós-Graduação em Agronomia - Agricultura e Ambiente; UFSM Frederico Westphalen
• Palavras-chave em Português: Fertilizante organomineral; Trigo; Soja; Aveia; Eficiência agronômica; Organomineral fertilizer; Wheat; Soybeans; Oats; Agronomic efficiency; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: http://repositorio.ufsm.br/handle/1/38184

This study evaluated the efficiency of organomineral fertilizers with EXES⁺ Technology compared to conventional mineral fertilizer in three agricultural crops (wheat, soybean, and oat) under a no-till system in two municipalities in the state of Rio Grande do Sul. The experimental design was a randomized block design with four treatments. The treatments were: Control (no fertilization), FM-DR (mineral fertilizer at the recommended NPK dose), FOM-DR (organomineral fertilizer at the recommended NPK dose), and FOM-DIEq (organomineral fertilizer at the investment dose equivalent to mineral fertilizer). The FOM was obtained through EXES⁺ Technology, an innovative fertilizer production system that includes granulation processes by extrusion and spheronization, and the insertion of mineral and microbiological sources into the granules. The granulation process produces spherical, dense granules resistant to disintegration, which facilitates application by seeders and planters. Furthermore, the technology incorporates multiple elements (macro and micronutrients and beneficial elements) and plant growth-promoting microorganisms into the granulation process. Plant height, dry mass, grain yield, nutrient extraction and export, agronomic efficiency, and apparent nutrient recovery efficiency were evaluated. The data were subjected to analysis of variance, and treatment means were compared using Tukey's test at a 5% probability of error. In wheat, it was observed that treatments with organomineral fertilizers (FOM-DR and FOMDIEq) provided significant increases in shoot dry mass and grain yield, surpassing the mineral fertilizer. The organomineral fertilizers promoted greater extraction via the aerial part and export via grains of nutrients (N, P, K, Ca, Mg, Cu, Zn), with FOM-DIEq standing out with superior agronomic efficiency for N, P, and K, and superior apparent recovery efficiency compared to the mineral fertilizer. The residual effect of fertilizers applied in previous crops indicated greater biomass accumulation and superior K extraction with the use of organomineral fertilizer at the FOM-DR dose compared to mineral fertilizer. The results support greater agronomic efficiency and viability of using organomineral fertilizers for wheat, soybeans, and oats in different soils when compared to mineral fertilizers. It is concluded that organomineral fertilizers produced with EXES⁺ Technology are technically adequate alternatives, with high agronomic performance and relevant residual potential, contributing to more efficient and resilient agricultural systems.