Fertilizante Minerla e resíduo orgânico de frango sobre a produtividade de grãos da cultura da soja

Abstract

The experiment has been done in the town of Japura/PR, northwest from the state, with the aim of estimating the use of the mineral fertilizer NPK combined with the organic residue (chicken’s bed), in different doses, about the grain fertility in the soybean crop. The experimental desing used was in randomized blocks with five treatments of different servings from the chicken’s bed (T1=0; T2=3; T3=6; T4=9 and T5=12 Mg ha-1), in association with the mineral fertilizer NPK-02-20-18, applied in a single dose to the sowing groove with 260 pounds ha-1, in three repetitions. The aftermath indicates that in the soybean cultivation the use of the chicken’s bed, although it didn’t stated significant statistc changes, presented an increase in the grain’s productivity from 38,26 pounds ha-1 to every applied megagram, which is equivalent to 0,6 sacks of soybean/ha, which in economic terms, wasn’t considered practicable in the first year of application, when applied in the same area with the mineral fertilizer NPK, according to the availability, dosage and price in the zone; finding that the bigger is the chicken’s bed dosage applied, more time it will take to pay for the application costs.