Association of organic and mineral fertilization on crop yield and theoretical cachaça in sugarcane

Abstract

We evaluated several organic fertilizers associated or not to mineral fertilizers, in the cane yield and theoretical sugarcane brandy in plant cane. The experimental design was randomized blocks, with nine treatments and four replications, constituted of: T1: Liming (1) + reactive rock phosphate (2) + chemical fertilizer (3); T2: 2 + 3; T3: 1 + 3 (control); T4: 1 + 2 + 3 + cattle manure (4); T5: 1 + 2 + 4; T6: 1 + 2 + 3 + chicken manure (5); T7: 1 + 2 + 5; T8: 1 + 2 + 3 + cane bagasse (6); T9: 1 + 2 + 6. It was applied the fertilizers in the following doses: cattle manure, 30 t ha-1; chicken manure, 3.5 t ha-1; cane bagasse, 24 t ha-1; reactive rock phosphate, 400 kgha-1 and120 kgha-1 of K2O and P2O5, in the planting furrow. The limestone was distributed in the dose of 2.5 t ha-1. The variety was used SP 79-1011. The cattle manure substituted the chemical fertilization of plant cane. The cane bagasse, when used as organic source should always be complemented with the chemical fertilization; there were no effect of treatments in the principal technological characteristics of the cane.