Abnormalities and defects of different trees in selected urban areas [Philippines]
1988
Esguerra, A.E.
Among the one hundred twelve species planted in the study areas, fire tree is the most abundant, followed by ipil-ipil, narra, mahogany, coconut, cypress and McArthur palm. These species are oftenly viewed in municipal parks, provincial parks, streets, roadsides, school campuses and hospitals. As to the defects/abnormalities of the species surveyed, common are those done by man using sharp instruments. This was found mostly in parks and school campuses. Other mechanical injuries are typhoon injury, root exposure, cavities, electrical interference and trunk injury. Natural defects observed are caused by insect, rust and spots, gas poisoning, bulges and nutrient deficiency. Both mechanical and natural defects are prevalent on the trunk and crown portions of a tree. With regards to planting, the surrounding where the plant is to be planted should be cleared of all kinds of vegetation. The type of soil should also be noted as it is this factor that the plant will primarily depend on its early stage. After planting, care and maintenance is also important. The tree must be guarded with stakes or any material that could protect them. This must be maintained until such time the root system is well established and strong enough to stand by itself. Watering, fertilizing and weeding is also needed. Application of insecticides and pesticides should be used when there is no other alternative to slip away the disease
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