RESPOSTA DA CANA-DE-AÇÚCAR AO USO DE BIOESTIMULANTE SOB DIFERENTES DENSIDADES DE PLANTIO

Abstract

The sugarcane culture has an indisputable role in the Brazilian economy. The adoption of new technologies is growing among producers, such as the use of biostimulants. The use of the ideal number of buds per linear meter of groove in the plantation becomes a practice in which it reflects in the producer's economy. The objective of this study was to evaluate the components of sugarcane yield under the use of biostimulant based on plant hormones under 5 different planting densities. The experiment was installed in Areia, Paraíba. The experiment was carried out in a randomized block design using a factorial of 5x2 where it evaluates the condition of 5 planting densities (5,10,15,20,25 buds per meter) under two effects, with biostimulant and without its use. The parameters analyzed were number of shoots emerged per linear meter at 15, 20 and 25 days after planting, number of industrializable stalks per meter, number of co-workers, soluble solids content, stalk height, stalk diameter and tonnage high per hectare. The obtained data were submitted to analysis of variance, using the software Sisvar, being the means of the treatments compared through the f test, level of 1, 5 and 10%. There was only significance for number of stems per meter with the application of the biostimulant and for number of leaves in which the mean was higher for the treatment that did not receive the biostimulant. For the planting density in number of buds per linear meter of furrow, there was only statistical significance for ºBrix and for budding. The use of the biostimulant provides greater amount of industrializable shoots per meter and greater foliar abscission together with a linear increase of the density in number of buds per linear meter of furrow there is an increase of ºBrix and sprouting that also increases significantly as a function of the season 15, 20 and 25 days after planting.