(1)
Borkert, C. M.; Farias, J. R. B.; Sfredo, G. J.; Tutida, F.; Spoladori, C. L. Soybean Response to Fertilization and Potassium Availability in an Oxisol (Haplorthox). PAB 1997, 32 (12), 1235-1249. https://doi.org/10.1590/S1678-3921.pab1997.v32.4778.