Chemical And Biological Control Of Agricultural Pests

Question 0

What is a pesticide?

Answer 0

Poisonous chemicals that kill pests

Question 1

What is a pest?

Answer 1

An organism that competes with humans for food or space, or it could be a danger to health

Question 2

An effective pesticide should be…

Answer 2

Specific, biodegradable, cost-effective and not accumulate

Question 3

What is biological control?

Answer 3

The control of pests using organisms that are either predators or parasites of the pest organism

Question 4

Name 3 advantages of biological control?

Answer 4

Very specific, once introduced the control organism reproduces itself and pests do not become resistant

Question 5

Name 2 disadvantages of biological control

Answer 5

They do not act as quickly and a control organism may itself become a pest

Question 6

List 3 disadvantages of chemical pesticides

Answer 6

Always have some effect on non-target species, must be reapplied at intervals which makes them very expensive and pests can develop genetic resistance

Question 7

What are integrated pest-control systems?

Answer 7

They aim to integrate all forms of pest control rather than being reliant on one type

Question 8

What do integrated pest-control systems try to do?

Answer 8

Decide on an acceptable level of the pest rather than trying to eradicate it altogether

Question 9

What do integrated pest-control systems involve?

Answer 9

Managing the environment to provide suitable habitats, regularly monitoring crops for signs of pests so that early action can be taken, removing the pests mechanically

Question 10

What is monoculture?

Answer 10

Growing a single species of crop

Question 11

What are some disadvantages of monoculture?

Answer 11

Insects and fungal pests can spread easily