Resumo

BELTRAN, Marcelo Javier et al. Phosphoric rock and gypsum: a complement to the traditional soybean fertilization. Cienc. suelo [online]. 2019, vol.37, n.1, pp.180-185. ISSN 1850-2067.

The objective of this work was to compare the effect of the application of different sources of phosphorus and sulfur (synthetic fertilizers, phosphate rock and gypsum) on soybean crop, and to evaluate the residuality of these nutrients according to the source of application in a typical Argiudol soil under no tillage system. The results obtained show that the fertilization with a mixed of phosphate rock and gypsum, allowed to obtain the same yields as the traditional fertilization. However, no residual effect of the phosphate rock on the soil extractable phosphorus and sulfur was measured.

Palavras-chave : Agrominerals; extractable phosphorous; sulphates; grain yield.