1. Response of common bean, upland rice, corn, wheat, and soybean to soil fertility of an Oxisol
2. EMBRAPA-SPI. 1992.Technical Recommendations for Rice Cultivation in Favorable Regions: Zones 31, 36, 40, 64, 83, and 89123Brasilia, Brazil: EMBRAPA-SPI.
3. Moraes, J.F.V. and Rabelo, N.A. 1986.A Simple Method for Plant Digestion12Goiania, Brazil: EMBRAPA-CNPAF.