The application of organic fertilizers and natural minerals in the sugar cane crop (part I): effect on the physical properties of Inceptisol soil and the yield of sugar cane crop

Abstract

The study was carried out in the Territorial Research Station of Sugar Cane on the Inceptisol soil, and in the soil lab. of Agricultural Research Institute. It were established 9 treatments with organic materials and natural minerals. The structural state of soil was improved with the application of the organic and organic-minerals variants expressed in the increment of stable aggregates, soil structure factor and permeability. The soil consistency was modified with tendency to be bigger the inferior limit of plasticity in the organic and organic-minerals variants. The biggest yield in Pol (t.ha-1) and agricultural one was obtained when was applied compost 4 t.ha-1+ calcareous phosphate rock 2 t.ha-1 (with 110.38 t.ha-1) and sugar cane filter cake 15 t.ha-1+ calcareous phosphate rock 2 t.ha-1(with 96.27t.ha-1) surpassing the chemical fertilization in 16,50% and 1,60% respectively.