ANÁLISE DE CRESCIMENTO DE QUATRO CULTIVARES DE FEIJOEIRO-COMUM EM FUNÇÃO DOS Graus-dia ACUMULADOS

Abstract

The bean (Phaseolus vulgaris L.) is considered one of the most important crops in Brazil, being the bean is one of the main elements that constitute the diet of the Brazilian people. The study of the characteristics to varieties of bean in distinct regions is important to know the potential maximum of these varieties in different ambient conditions. In such a way, it was objectified with this work to evaluate the phenological development and physiology, associates to the degree-day accumulated, of four varieties of common bean in the region of Morrinhos, Goiás at two times of sowing. The experiment was developed in the experimental field of the Instituto Federal Goiano - Campus Morrinhos, enters the months of April and August, where if they had used to varieties them Pérola, BRS Estilo, BRS Esplendor and IPR Uirapuru. The delineation block-type was randomized with 6 repetitions. The carried through evaluations had been Index of Foliar Area (IAF), Biomass, Development phenological and Chlorophyll content. The maximum IAF of all cultivars was observed between 600 and 800 degree-day accumulated. To varieties Pérola it presented greater accumulation of leaf biomass, stalk and string beans and greater text of Chlorophyll. The Esplendor varieties showed a higher precocity than the others. Growth analysis is an essential tool in the study of bean culture.