Arboriculture Terms

a condition in which the supply or availability of an essential element results in cessation of critical plant processes. resulting in visible. physical symptoms such as chlorotic leaves or necrotic margins. and which. if left untreated. will reduce tree health and may eventually lead to premature death.

a condition in which the supply or availability of an essential element reduces the growth rate but does not cause plant dysfunction or premature death.

immature form of an insect with incomplete development. resembling a smaller version of the adult without wings.