Características fitométricas e produtivas do rabanete adubado com fosfato natural Bayóvar

Abstract

Radish is a tuberous vegetable commonly consumed in natura and with fast cycle. This culture, when cultivated in Oxisol, requires phosphate fertilization, since these soils naturally have low natural fertility. Based on this, the present study has the objective of evaluating the application of doses of phosphorus (Bayóvar natural phosphate) in radish production cultivated in Cerrado Oxisol. The experiment was carried out in a greenhouse in a completely randomized design, using Bayóvar natural phosphate as the source, to supply the concentrations of 0, 80, 160, 240, 320, 400 mg dm-3 of P2O5 with five replicates. The variables analyzed were: Falker chlorophyll index, leaf number, plant height, root diameter, fresh and dry root mass, and fresh and dry shoot mass. Data were submitted to analysis of variance with posterior regression test with up to 5% probability. There was a significant effect for all the analyzed variables, adjusted to the quadratic regression model, except for the fresh shoot mass that obtained an increasing linear adjustment. It can be concluded that fertilization with natural phosphate has a direct influence on the growth, development and productivity of radish, with a range of P2O5 doses between 230 and 330 mg dm-3, except for fresh shoot mass that obtained a linear adjustment.