Initial Growth and Harvest Time in Six Accesses of Baccharis myriocephala DC.

Abstract

This study aimed to analyze the initial growth and the harvest time in six carqueia accesses, under the edaphoclimatic conditions in Viçosa-MG. Two experiments were earned out under field conditions dunng the period from October 5, 1996 to July 14, 1997. In expenment 1, from 44 to 149 days after transplanting (DAT), the randomized experimental design with subdivided plots was used with plots consisting of six carqueja accesses (mam treatment) and the subplots of six sampling times (second treatment). In experiment 2, from 117 to 229 DAT, the plots consisted of six accesses and the subplots of five harvesting times. In experiment 1, the accesses presented no significant differences among each other for leaf area, height, node numbers, branch numbers and branch length. In expenment 2, the flowering occurred on the 157th day after transplanting at the beginning of May and there was no precocity in any access. In this expenment the accesses significantly differed to each other for dry matter, fresh matter, branch length, leal area and height The specific leaf area showed continuous decrease as a function of time in all accesses, and this was related Io the photoassimilate consumption by nonproductive structures.