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Published byJasper Campbell Modified over 9 years ago
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Today we are covering from the specification:
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Types of Pest Control Cultural practices Chemicals Biological control Integrated pest management (IPM)
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Cultural Methods ‘Traditional’ farming practices, e.g. -Weeding -Crop rotation -Intercropping -Tilling -Physical barriers
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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.
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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.
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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.
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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.
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Sort out the statements under 4 headings: Cultural practices Chemicals Biological control Integrated pest management (IPM)
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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).
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