Produtividade de cana-de-açúcar com a utilização de doses e fontes de gesso em um latossolo no estado de Pernambuco

Abstract

This work is about the answers of yield on the first cut of the sugar cane (plant cane), using the varieties SP79-1011 on an Oxisol red-yellow (Latossolo vermelho-amarelo in Portuguese), by the application of gypsum doses. Establishing a study that uses two gypsum sources, here called Mineral Gypsum (MG/ GM in Portuguese) and Recycled Gypsum (RG/GR in Portuguese). The study was lead in a experimental area, implanted on the Usina Cucau’s agricultural field, in Rio Formoso City – PE. Beside the weight after the cut of each plot with the respective treatment, was valued the percentage of fiber the amount of TSR - Total Sugars Recovered (ATR in Portuguese) and Tons of Pol per Hectare (TPH), by technological analysis of the cane produced, permitting a quantitative and qualitative valuation of raw material (sugar cane). In relation of (about) the weight per plot, the witness (zero gypsum) presented a major value followed by the dose 2 for both treatments (GM and GR). The major dose of GR resulted on a major tenor of fiber, and the doses 1 and 2 of GM together with the witness showed the major tenors sub-sequent. The doses 1 of GM and dose 4 of GR had the best answers about ATR and the dose 2 of GM and dose 4 of GR best answers about TPH.