Abnormalities and defects of urban trees in some selected areas in Southern Luzon [Philippines]: their cultural and management needs.
1986
Juanatas M.C.
Of the different species planted in the study area of concentration, narra (Pterocarpus indicus) was found to be the most abundant followed by talisay (Terminalia catappa), cypress (Cupressus cusitanica), pine tree (Delorix regis) and ipil-ipil (Leucaena leucocephala). These trees are openly seen and viewed on roadsides, schools, parks and provincial capitols. With regards to the present status of the trees inventoried and surveyed, the common injuries suffered by the trees were mostly caused by man, such as in the course of construction and repair caused by vehicular intrusion, by sharp knife injuries and damages caused by typhoon. Defects such as catface, bulge leaf spot and abnormalities such as crown deformation, root girdling, and cavities were also noticed. These were due to nutrient deficiency. For the maintenance and improvement of trees planted, subsequent application of fertilizer will improve the health and appearance of same and will enable them to withstand future attack by insects.
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