Phenological Study of Some Tree Species at Different Ages in Aswan, Egypt

Phenological studies for eight tree species, i. e Azadirachta indica, Chrysophyllum oliviforme, Dalbergia sissoo, Inga edulis, Khaya senegalensis, Spathodea campanulata, Syzygium cuminii and Tamarindus indica grown at different ages during 2012 and 2013 seasons were conducted. These trees grown in Kom-Ombo, Tropical Farm, about 45 kilometers northern Aswan). In this study, 24 trees for each age (less than 10 and more than 25 years old) from these species were monitored at three different periods of each month of the year. Leaf initiation for the deciduous tree species began in late January, continued up to mid March, however leaf initiation for the sapling species was shortly before those of mature trees. Flowering continued in different woody species throughout the year. However, flower- initiation started from late January to late May for the mature trees, while it was from late January to mid May for sapling tree species during 2011 and 2012 years. Among the studied woody species, sapling trees showed shortly prior flower activity compared to those of mature in the two studied years. However, in comparison to fruiting activity, woody species at the mature stage exhibited late fruiting activity than that of sapling one. In the tested species, sapling trees exhibited more germination percentage than for matures one.