ch 12 study question

Question 1

what basic steps can be followed to manage pest populations?

Answer 1

prevention, early detection, correct identification of the pest, proper selection of control materials, correct water pH, correct application methods

Question 2

list three things that one can do to reduce pest populations without spraying.

Answer 2

Site selection, early removal of vegetation, high quality seeds and transplants,

Question 3

what are some ways to control insects mechanically

Answer 3

physical barriers, hand picking, water sprays containing soap or oil, traps

Question 4

what is meant by companion planting? give an example.

Answer 4

using one type of plant to protect or enhance the growth of another.

roses x chives or marigolds:; will protect against aphids.

Question 5

what are three biological insecticides?

Answer 5

Pyrethrum- slightly toxic from chrysanthemum flowers

Bacillus thuringiensis (bt)- bacterial insecticide toxic to caterpillar.

Rotenon- botanical insecticide, extracted from the roots of Derris plant in Asia and use plants in south america. d

Question 6

what are some beneficial insects?

Answer 6

lady beetles, praying mantis, green lacewings, syrphidfly larvae, assassin bugs, and ground beetles