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