Unit 18

Fumigants

are gaseous poisons that kill by contact, Methyl Bromide, nematodes

Repellents

don't kill but make target plants unattractive to pests Aluminum Foil, flying insects

Stomach Poison

kills insects that eat iy, Rotenon, beetles

Contact Poison

kills insects that it touches, Malathion, aphids

Systemic Poison

kills insects that suck plant juices, Orthene, aphids

Attractants

lure insects into a trap, where they die, hormone bait, Japanese beetles

The three main groups or families of insecticides and one chemical belonging to each.

Inorganic Compounds (sulfur) Organic Compounds (pyrethrum, rotenone) Synthetic Organic Compounds (methoxychore)

Six ways in which insecticides work to control insects.

Stomach Poison, Contact Poison, Systemic Poison, Fumigants, Repellents, Attractants