Avaliação potencial de diferentes fertilizantes foliares no crescimento e produção em cana planta

Abstract

There are several products on the market that can be used as a supplement in sugar cane fertilization, but there is little information on their real efficiency. The objective of the experiment was to evaluate the leaf nitrogen fertilization effect on sugarcane yield, where the efficiency test of different nitrogenous products applied via leaf in sugarcane was performed. The experiment was carried out in Rio Verde - GO, from March 2018 to May 2019 using the commercial cultivar RB 966928 in a year and half sugarcane system. The experimental design was randomized blocks, with 4 treatments plus the control treatment, and 5 replications. Liquid nitrogen fertilizers were applied via foliar, using the commercial dosage of each product with pressurized equipment by compressed CO2 cylinder. The products used were: FH + Vigor, Vitale Nitro, Tardus N and N Top. The data collection for experiment evaluation occurred at the end of the sugarcane cycle, being measured variables of gas exchange, biometric and technological. Data were subjected to analysis of variance and, when significant, means were compared by the Duncan Scott-Knott test at 5% probability. It was observed that the fertilizers application did not cause increases on productivity or on quality indicators of quality of raw material. Vitale Nitro, FH + Vigor and Tardus N products had beneficial effects on gas exchange parameters in plants that received the products