Avalia??o do comportamento de espécies de Eucalyptus spp. na Zona da Mata Pernambucana. I: Resultados do primeiro ano - 2001

摘要

Due to its high rainfall and predominance of hot climate conditions all over the year, the 'dry rainfall' region of the State of Pernambuco, located in the Northeastern part of Brazil, appears to be suitable to the growth and development of many forest tree species such as those of the genus Eucalyptus. In this trial, seedlings of 10 Eucalyptus species were tried, namely: Eucalyptus saligna Sm., E. dunnii Maiden, E. benthamii Maiden & Cambage, E. tereticornis Sm., E. urophylla S.T. Blake, E. pilularis Sm., E. camaldulensis Dehnh., E. robusta Sm., E. grandis W. Hill ex Maiden and E. citriodora Hook. Observations and measurements will be carried out during seven years, taking into account mainly: survival (%), plant height and crown width. A complete randomised block experimental design was used with four replicates, with 35 plants per plot. At the first evaluation, held 12 months after planting, the following data were obtained: the majority of Eucalyptus species showed a survival rate higher than 95,0%; in relation to forked trees, only E. dunnii, has not presented such characteristic, while E. citriodora. showed the highest rate (35%) and the others, values below 15%; highest plant height and diameter at breast heigth (DBH) were found among seedlings of E. citriodora, E. urophylla, E. camaldulensis, E. saligna E. grandis and E. dunnii.