ISA Arborist Study Guide - Questions and Answers
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ISA Arborist Study Guide - Questions and Answers When it comes to pruning, as a rule, mature trees: Not tolerant of severe pruning If the height of the tree needs to be reduced. Branches should be re ... moved at their point of origin or to a lateral large enough to assume. Advantage of Amon-eye system over eye bolt: Length of rod can be adjusted Purpose of a lightning protection system: Conduct the electrical charge into the soil away from the tree. If two bracing rods are installed to support a weak Union, they should be placed: Staggered, and no closer together than the diameter of the trunk. If a lag hook is installed into decayed wood, Holding power will be reduced, decay may be detected when drilling, decay will spread along the lag When cabling a multi stemmed tree, extra support can be added by: Cabling the limbs together in triangular combinations. A condition with a cluster of dwarfed shoots on affected twigs: Witch's broom Twig dieback from periodical cicadas is primarily a result of: Ovipositing, egg-laying Plant damage associated with a sap-feeding insect pest might appear as: Distorted leaves or shoots. Scale damage to plants is the result of: Phloem-feeding insects causing a loss of vigor Damage caused by non-living factors tend to be: Uniform with definite borders Plant Health Care is a comprehensive program to manage: The appearance, health, structure of plants. Mortality spiral describes the: Cumulative effects of stress causing decline of a plant over time. Process of gathering information, assessing problems, determine client expectations, and coarse of action is: Appropriate response process Systematic pesticide is one that: Is translocated throughout the plant. Releasing predators or parasites of an insect pest is an example of a: Biological control Necessary component in the existence [Show More]
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