Responses of sweet sorghum to N, P And K. II. Technological characteristics

Abstract

This work deals with two experiments under field conditions, on a "Latosol Roxo" (clay) and on a Dark Red Latosol (loamy sand), at Barra Bonita, SP, Brazil, where two sweet sorghum cultivars wore sown to study the effects of N, P and K on sugar and alcohol production. At ripening Brix, reducing sugar, total sugar, sucrose, fibra and alcohol production were determined. There was an increase on alcohol production of cv. Brandes due to N fertilization on the clay soil and due to N and K fertilization on the loamy sand soil, although cv. Rio didn't show production increase due to fertilizers. Stalk production was the most important component for alcohol yield. Considering the different soils and cultivars, the fertilizer effects on sucrose, reducing sugar and brix levels were not consistent.