But earthballing these trees are tantamount to slowly killing them off. The survival rate of earthballed trees are very low, as exemplified in this activity done at Camp John Hay. Mr Michael A Bengyawan, Director at Cordillera Ecological Centre, explains:
Why pinus insulkaris or pine tree and Alnus japonica or alnus will not survive earthballing!
Pine trees and Alnus are taproot trees, deep-rooting. This means, the tap root is the main root that sustains the tree and that the lateral, feeder roots, coarse roots and water roots support the taproot. When you earthhball, the machine used, normally a backhoe) cuts off the feeder, lateral and water roots, and the taproot is forced out. This stresses the tree, depriving it of water and nutrient and choking it off to die, slowly.
What happens when a tree is uprooted?
- Transplant Shock -- They are subjected to stress-related problems due to tremendous root loss when dug. This condition, commonly called transplant shock, results in increased vulnerability to drought, insects, diseases and other problems. To a greater or lesser degree, transplant shock lasts until the natural balance between the root system and the top or crown of the transplanted tree is restored. Old trees do not survive, most die during this root-establishment period. A tree’s chance of survival can be drastically improved through practices that favor establishment of the root system. This involves regular care during the first three years following transplanting.
- Nutrient and Water Deprivation -- When a tree is dug for transplanting, more than ninety-five percent of the absorbing roots are severed. With less than five percent of its root system remaining, the newly transplanted tree suffers from water stress. The crown is capable of losing water faster than it can be absorbed by the limited root mass. Water stress, in turn, can reduce the ability of leaves to produce carbohydrates (energy), diminish the growth of all parts of the tree, and subject the tree to many other environmental and pest-related problems. Combined, these problems all contribute to "transplant shock" that can kill the tree.
Now let us hear what SM's supposed experts on these things have to say. Where are they, SM Baguio?

0 comments:
Post a Comment