Crop Protection Flashcards
State 3 properties of annual weeds.
- rapid growth
- short life cycle
- high seed output
- long-term seed viability
State a property of perennial weeds with competitive adaptations.
- storage organs
2. vegetative reproduction
State the 3 main type of invertebrate animals that are pest of crop plants.
- insects
- nematode worms
- molluscs
State 3 things that can cause disease in plants.
- fungi
- bacteria
- viruses
State 3 things weeds compete with crops for.
- water
- light
- nutrients
- space
How do pests eating leaves reduce plant growth?
Reduces photosynthesis
What are the 4 main ways of protecting crops?
- Cultural means
- Chemical means
- Biological control
- Integrated management
State 3 cultural methods that can control weeds, pests and disease.
- Ploughing
- Weeding
- Crop rotation
State the 5 types of pesticide.
- Herbicide
- Fungicide
- Insecticide
- Molluscicide
- Nematicides
Name the 2 types of herbicide.
- Systemic
2. Selective
Name the type of herbicide that spreads through the vascular system and prevents regrowth.
Systemic
Name the type of herbicide that has a greater effect on certain plant species? (Broad leaved weeds)
Selective
What is the best way of applying fungicides?
Protective applications based on disease forecasts rather than treating diseased crops.
What is bioaccumulation?
build-up of a chemical in an organism.
What is biomagnification?
An increase in the concentration of a chemical moving between trophic levels
