Vaporization

The evaporation of the active ingredient in a pesticide during or after application. Related Images:

Systemic

Spreading internally throughout the plant. Related Images:

Synthetic pesticide

Chemically formulated pesticide, mainly from inorganic sources. Related Images:

Summer oil

A light refined horticultural oil used during the growing season to control insect pests and diseases. Related Images:

Selective pesticide

A pesticide that kills only certain kinds of plants or animals; for example, 2,4-D kills broadleaf lawn weeds but leaves grass largely unharmed. Related Images:

Scale

A type of insect pest. Related Images:

Pupae

An insect in the non-feeding stage between the larva and adult, during which it typically undergoes complete transformation within a protective cocoon or hardened case. Only insects that undergo complete metamorphosis have pupal stages. Related Images:

Pupa

The stage between larva and adult in insects that go through complete metamorphosis. Related Images:

Psocoptera

A major order of insects that have two pairs of wings, or are wingless, and chewing mouthparts (barklice, booklice). Related Images:

Predator

An animal that eats another animal. Related Images: