Six field experiments were carried out during four growing seasons (86/87; 87/88; 88/89; 89/90) in order to study the availability of the residual fertilization effect of the sugar cane crop on the peanut crop. The treatments consisted of applications of 0, 30, 60, and 90Kg/ha of P2O5 as triple superphosphate and 0 and 30Kg/ha of K2O as potassium chloride, arranged in a randomized complete block design. The seeds were innoculated with selected Bradyrhizobium bacteria (SMS-729, SMS-400, SMS-438) as source of nitrogen. The soils were not limed. Fertilizer effect was observed in a sandy and a clayey soil, of Artur Nogueira-SP, Brazil and Campinas-SP, Brazil, respectively. No fertilizing effect in peanut production was observed for the other locations. It can be concluded that the fertilizer applied to sugar cane was sufficient to furnish the nutrients necessary for the peanut crop, even at the medium and low soil fertility conditions.
peanut; residual fertilization; nutrients PK