Estudo da composição tecnológica e bromatológica de mandioca (Manihot esculenta Crantz) em dois espaçamentos

Abstract

The cassava (Manihot esculenta Crantz) is currently of great economic and social importance for Brazil. Important factors for evaluation of cassava cultivars under field conditions are: productivity (mg ha-1); Dry Matter Percentage (MS%). In order to carry out nutritional evaluation the following parameters must be considered: Fat - Ethereal Extract (EE%); Ash (%); Gross Digective Fiber (FB%); Gross Protein (PB%); Non Nitrogenate Extrative (ENN%) and Total Digestive Nutrient (NDT). The aim of this study was to verify differences between 16 cassava cultivars cultivates whit differents spacements: 0,60 m and 0,80 m whithin the line and 0,90 m between lines. The experimental design performed in random blocks with some treatments in common, with four repetitions. The results showed that the cultivars Espeto; Eucalipto e IAC 144-86 obtained smaller productivities. The cultivars Iracema; IAC 184-89; Fibra; IAC 89-87; Fécula Branca; IAC 32-88; IAC 14; Olho Junto; Mico; IAC 12; IAC 169-86; IAC 5-88; IAC 15 showed the highest yields. The bromatological characteristics didn't present statistical differences. The among cultivars 0,60m in the spacement increased the productivity in 12% when compared to the 0,80m spacement.