CARACTERÍSTICAS AGRONÔMICAS DE VARIEDADES DE CANA-DE- AÇÚCAR (Sacccharum officinarum L.) NO QUARTO CICLO

Abstract

After a troubled period, with the closing of factories, milling of sugarcane (Sacccharum officinarum L.) decreases and disappointing yield numbers, the sugar and ethanol industry started 2016 with a search for new outlets for their recovery. With the increase in the percentage of anhydrous ethanol in gasoline and hydrous ethanol low prices, the decrease in sugar exports by India and also by climatic factors Brazil has been recovering this critical period in the sugar and alcohol sector. In order to get good results with the exploitation of sugarcane we should use better varieties that are adapted to our every environment. This work aimed to evaluate the behavior of three sugar cane varieties which were planted on a hillside environment in a Paleudult soil, in the absence of fertilization during the third cycle, at the Bacupari’s farm in Alagoa Nova, Paraíba. Was used a randomized block represented by three varieties of sugarcane (SP 79-1011, RB 863129 and RB 92579) with four replications. It was found that the variety RB 863129 presented a positive effects on the yield of stems and tillering. The RB 863129 and RB 92579 varieties presented statistical difference in both plant height and tillering compared to the SP-791011 variety. In conclusion, considering the achieved productivity and assessed crop cycle evaluated it is possible to select more productive varieties for sugarcane fields of Paraíba state.