Key Area 3.3-.4: Crop protection and animal welfare

Question 1

What is the definition of an annual weed?

Answer 1

They grow from seed and complete their life cycle in 1 year

Question 2

What is the definition of a perennial weed?

Answer 2

Persist from year to year (live longer than a year)

Question 3

What are the features of an annual weed?

Answer 3

Grow quickly following germination
Have a short life cycle
Produce many seeds
Seeds are viable for long periods of time

Question 4

What are the features of a perennial weed?

Answer 4

Have competitive advantage through being established prior to crop growth
Have storage organs
Reproduce vegetatively using special structures such as runners and bulbs

Question 5

What are the three invertebrates?

Answer 5

Nematode
Molluscs
Insect

Question 6

Description of a nematode?

Answer 6

Bore into host plant and live parasitically within the plant tissues

Question 7

Description of a mollusc?

Answer 7

Have rasping mouthparts, which can deal with tough plant material

Question 8

Description of a insect?

Answer 8

Have piercing or biting mouthparts, which penetrates or chew plant tissues

Question 9

What are the three microorganism diseasing crop plants?

Answer 9

Fungus
Bacterium
Virus

Question 10

What are the cultural control method for pests?

Answer 10

Ploughing
Weeding
Crop rotations

Question 11

What is the effect of ploughing?

Answer 11

Perennial weeds damaged or buried

Question 12

What is the effect of weeding?

Answer 12

Early hoeing removes annual weeds

Question 13

What is the effect of cop rotations?

Answer 13

Specific pests die out between planting of the new crop

Question 14

Name chemical methods of pest control?

Answer 14

Herbicides
Systemic herbicides
Fungicides
insecticides (ddt)