| The work had for objective to evaluate the behavior of the phosphorus sources Arad phosphate, Alvorada phosphorite and Triple Superphosphate in two soils, a sandy and a clay 70% basis saturation in the natural acidity condition. The experimental outlining was totally randomized in a factorial scheme, 2 x 2 x 3 x 4, being two soils, three phosphate fertilizer sources and four doses (0, 100, 200 and 400 kg ha-1), with four repetitions. The results were submitted to the variance analysis and adopted the regression, being adjusted the equations and using as a criterion to the statistical pattern choice the significant F tests to 1 and 5%, and magnitude of the determination coefficients. The phosphate fertilizers elevated the tenors of calcium and phosphorus in... |
