Behavior phosphorous fertility throughout the years in a sugarcane cultivation region on a vertisol soil

Abstract

The sugarcane phosphorus fertilization enhances the growth of the roots, the thickness of the stalks and stimulates sprouting. The data of 14 successive sugarcane harvests are introduced in this paper. The sugarcane was grown on a Vertisol soil, with high levels of phosphorus, located in northern Villa Clara, where phosphorus doses are studied, ranging from 0 up to 250 P2O5 kg ha-1. There was no response to phosphorus fertilization in none of the evaluated stools. In the plots that phosphorus fertilization was not applied during that period, the content value of phosphorus was reduced, which remained in the category of High (3.6-13.0 mg P2O5 100 g-1). While, in those fertilized stools, with doses up to 150 kg P2O5 ha-1, the phosphorus levels did not decrease so abruptly and with greater doses the content increases in relation to the initial value. The balance of the element in the soil is positive in all the treatments.

Keywords

• sugarcane
• fertilization
• phosphorus
• vertiso