Definition of terms
Any wind blowing down an incline, often due to cold air drainage.
A standard method of expressing the total effect of an insecticide. It includes the proportion of insects that have been killed or are moribund or are unable to maintain their normal position in the environment after a certain time.
An insecticide spray designed for use against flying insects that acts quickly, causing sprayed insects to fall.
A contact herbicide that is rapid in its action.