What are the three major tree pests?
The most common tree pests can be categorized into three groups: sap-sucking, defoliators, and wood borers. Butterflies, Caterpillars, and moths are main leaf eating insects, but there are a few more such as a variety of tree beetles.
What are the five major categories of tree attacking insects?
The five major categories of tree-attacking insects are leaf chewing, leaf mining, wood-eating, sap sucking, and gall making. Agricultural and horticultural crops are attacked by a wide variety of pests, the most important being rodents, insects, mites, nematodes and gastropod molluscs.Natural enemies Parasitic wasps and predatory beetles attack borer larvae and pupae in tunnels.
What is the most common disease for trees?
Powdery Mildew. Powdery mildew is one of the most common plant diseases and is easily recognized. White spots or patches with a talcum powder appearance characterize this disease. Powdery mildews are severe in warm, dry weather with succulent tissue being more susceptible to infection. Powdery mildew – one of the most common problems, this shows up as white, powdery spots on leaves. It can infect most plant species, but rarely does much damage. If your tree is infected prune away all mildewed areas then spray with fungicide.