Pó de rochas basálticas para utilização como remineralizador de solo em cultivo de Zea mays L..

Abstract

In view of the demand for fertilizers in the Brazilian scenario and the problem of mining residues, this research, through analysis of the behavior of the corn crop, sought to compare and understand the influence of the addition of rock dust to the soil. Three rock dust samples were used: one is the residue from the aggregate mining crushing process for civil construction; another is extracted for commercial use for use as a soil remineralizer; and the third powder is a residue from the amethyst extraction crushing process. Therefore, it was necessary to evaluate the potential of rock powders to promote a higher growth and flowering rate in Zea mays L. in a greenhouse, as well as to compare the effect of adding rock dust in three stages of plant development; evaluate the effect of different concentrations of rock dust on the development of the culture and determine the potential for use and better proportions of rock dust. With that, we concluded that the rock powder from the amethyst extraction residue, when applied in proportions referring to 5 ton / ha, presented the least size variability and the best results regarding the reproductive phase of the plant.