Successive applications of pig slurry in the soil can increase the levels and change the forms of copper (Cu) and zinc (Zn). The objective of this study was to evaluate Cu and Zn accumulation and forms in the soil of areas with successive pig slurry applications under no tillage crop rotation. The experiment was carried out in a Typic Hapludalf in the experimental area of the Department of Agricultural Engineering of the Federal University of Santa Maria, Santa Maria (RS), […]

This study was carried out to characterize the possible changes in the chemical nature of humic acids extracted from an Oxisol (0-10 cm) by Fourier transform infrared spectroscopy (FTIR), in the experimental area of Embrapa Meio Ambiente, in Jaguariúna (SP), Brazil. The data were obtained after six corn cultivations, and application of variable doses of sewage sludge (dry basis) from Barueri (BSS), in the treatments: BSS0 – control without sewage sludge application; NPK – mineral fertilization as required by corn; application […]