Today we are covering from the specification:

Types of Pest Control Cultural practices Chemicals Biological control Integrated pest management (IPM)

Cultural Methods ‘Traditional’ farming practices, e.g. -Weeding -Crop rotation -Intercropping -Tilling -Physical barriers

Chemical Pest Control Use of pesticides: herbicides, insecticides and fungicides to kill pests. May affect other organisms. Must be selectively toxic (narrow-spectrum) and biodegradable – why? Needs to be reapplied – expensive! May lead to resistance.

Biological Pest Control Uses living organisms. Natural predators/parasites/pathogens. Keep pest organism population below economic threshold. Must ensure the control measure doesn’t become a pest.

Integrated Pest Management Involves careful monitoring of pest population to keep it below the economic threshold. Two or more types of pest control are used in combination.

Integrated Pest Management 4 stages: 1.Identify pests and economic threshold. 2.Use suitable cultural methods to control pest populations. 3.If threshold is exceeded, use biological control. 4.If biological control doesn’t work, use pesticides, but at a low and carefully controlled dose.

Sort out the statements under 4 headings: Cultural practices Chemicals Biological control Integrated pest management (IPM)

Questions Work in groups of 5. Each person has a different question. You have 1 minute to write down an answer worth 1 mark. Pass the question on and repeat (with 30s extra to read the answers already written).