Results from field experiment are presented in this paper concerning phosphorus fertilization on wheat. Two rates of phosphorus, 90 and 180 kg/ha of P2O5, were compared in presence and absence of lime. Triple superphosphate, ordinary superphosphate and three Brazilian rock phosphates, i.e. fosforita de Olinda, fosfato Alvorada and fosfato Araxá, were utilized as phosphorus sources, with general application of nitrogen and potassium. The experiment was located on a soil classified as Arenito de Bo-tucatu, at Avaré, São Paulo State. The favorable effect of both types of superphosphate in increasing the yeld was highly significant, while the use of three rock phosphates phomoted no significant increase on wheat production, as compared to the checks, without phosphorus. Use of lime had no effect on grain production.