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Flashcards in Crop Protection Deck (17)
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1
Q

State 3 properties of annual weeds.

A
  1. rapid growth
  2. short life cycle
  3. high seed output
  4. long-term seed viability
2
Q

State a property of perennial weeds with competitive adaptations.

A
  1. storage organs

2. vegetative reproduction

3
Q

State the 3 main type of invertebrate animals that are pest of crop plants.

A
  1. insects
  2. nematode worms
  3. molluscs
4
Q

State 3 things that can cause disease in plants.

A
  1. fungi
  2. bacteria
  3. viruses
5
Q

State 3 things weeds compete with crops for.

A
  1. water
  2. light
  3. nutrients
  4. space
6
Q

How do pests eating leaves reduce plant growth?

A

Reduces photosynthesis

7
Q

What are the 4 main ways of protecting crops?

A
  1. Cultural means
  2. Chemical means
  3. Biological control
  4. Integrated management
8
Q

State 3 cultural methods that can control weeds, pests and disease.

A
  1. Ploughing
  2. Weeding
  3. Crop rotation
9
Q

State the 5 types of pesticide.

A
  1. Herbicide
  2. Fungicide
  3. Insecticide
  4. Molluscicide
  5. Nematicides
10
Q

Name the 2 types of herbicide.

A
  1. Systemic

2. Selective

11
Q

Name the type of herbicide that spreads through the vascular system and prevents regrowth.

A

Systemic

12
Q

Name the type of herbicide that has a greater effect on certain plant species? (Broad leaved weeds)

A

Selective

13
Q

What is the best way of applying fungicides?

A

Protective applications based on disease forecasts rather than treating diseased crops.

14
Q

What is bioaccumulation?

A

build-up of a chemical in an organism.

15
Q

What is biomagnification?

A

An increase in the concentration of a chemical moving between trophic levels

16
Q

What is a biological control?

A

The control agent is a natural predator, parasite or pathogen of the pest.

17
Q

What is integrated pest management?

A

A combination of chemical, biological and cultural control