Avaliação agronômica do suporte sólido capilar para fertilizantes fluídos: II. Aplicação de micronutrientes

The application of micronutrients in the soil, in a homogeneous way, with the least contact with soil particles may increase its agronomic efficiency. Storing a solution of fertilizers in a solid porous medium, which is used as a vehicle for application, links great homogeneity to low soil contact. The Solid Capillary Support for Fluid Fertilizers (SC) was used as porous solid medium. It is a compacted cylinder made of gypsum (CaSO4 • 2H2O),  developed experimentally by ULTRAFERTIL. The SC was an efficient way in supplying micronutrients, resulting in similar or better yields in relation to direct application in the soil.