EFEITO DE APLICAÇÃO DE TERMOFOSFATO MAGNESIANO EM SUPERFÍCIE NO DESENVOLVIMENTO DE CANA-DE-AÇÚCAR

Abstract

Sugarcane (Saccharum spp.) is originally from the island of New Guinea, located in the Pacific Ocean and has spread to the world. Sugarcane has become the most important crop developed in Brazil, so that Brazil ranks first in the world in sugar production and is the largest ethanol exporter in the world. The present work shows the preliminary results of a trial with the use of the fertilizer Thermophosphate Magnesian Yoorin Master, used in the fertilization of cover in seedlings of sugarcane micropropadas of BASF and in MPB, in different planting systems, in a soil with low availability of phosphorus. Therefore, the experiment was installed and conducted in a randomized block design (DBC), with 4 blocks, that is, 10 treatments, totaling 40 plots, with each plot consisting of 6 lines of 8 meters spaced between them by 1, 5 m. The two planting systems were arranged in such a way that in the plots of blocks A, B, C and D of the system A originated from micropropagation (SBW, BASF) and in the plots of blocks A, B, C and D of the system B, the mini grinding wheels. In all plots, the Magnesian Thermophosphate Yoorin Master was used as a source of P, applied to the surface, at doses of 0; 180; 360; 540; 720 g of P/plot. Preliminary results show that only the leaf area and production estimate variables in tons per hectare showed significant differences, regardless of the type of planting system and doses used. However, the data presented in this work are preliminary in nature, requiring the continuation of the experiment in the coming years in order to obtain more data from this experiment.