Killing Pest Species
Page 28 of the CGP A2-Level Biology Revision Guide.
- Created by: Hannah Kent
- Created on: 24-01-14 15:54
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- Killing Pest Species
- Chemical Pesticides
- Fungisides
- Kill fungal infections that damage agricultural crops.
- Issues for the Environment
- They may directly affect non-pest species eg. Butterflies
- They may indirectly affect other non-pest species eg. poisoning primary consumers
- Fungisides
- Biological Agents
- Natural Predators
- Introducing natural predators to kill pest species eg. Ladybirds eat greenfly
- Parasites
- They live in or lay their eggs in the pest species.
- To either kill the insect or reduce its ability to function
- They live in or lay their eggs in the pest species.
- Pathogenic Bacteria or Viruses
- Used to kill the pests
- Issues for the Environment
- Natural predators may become pest species themselves
- Biological agents can affect non-pest species
- Economic Issues
- Biological agents are less cost-effective than chemical pesticides
- Natural Predators
- Integrated Systems
- Using the combined effect of both Chemical Pesticides and Biological Agents.
- Chemical Pesticides
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