During the year 1986/87, experiments were conducted at the Experiment Stations of Mococa and Ribeirão Preto in the State of São Paulo, Brazil. The objective was to evaluate the effect of four rates of lime (0, 4, 8 and 12t/ha) on the concentrations of oil and protein in the seeds of the following soybean cultivars: IAC-Foscarin-31, IAC-11, IAC-12, and Cristalina. The maturity group varied from 130 to 160 days. The results showed that highest concentration of oil and protein was observed in seeds harvested at Mococa. Independently of liming and locality the cultivar IAC-12 presented the highest average production of oil and protein per area (561 and 963kg/ha, respectively). In both experiments, addition of lime resulted in raise of seed protein but in consistent decrease of seed oil for all cultivars. The quantity of oil and protein per area increased linearly with the increase in the rates of lime. This occurred as a result of the increase in seed yield after reducing soil acidity.
soybean cultivars; liming; oil; protein