Agricultural Pests 3.0 / 5 based on 1 rating ? BiologyPractical applications of biologyA2/A-levelAQA Created by: poojaCreated on: 25-12-12 19:58 Why do pesticides need to be specific? So that it is only toxic to one organism, it should be harmless to humans and other organisms to avoid damaging other food chains 1 of 5 What are biodegradable pesticides? Once the pests is applied it will break down into harmless substances in the soil 2 of 5 Why should pesticides not accumulate? If they did, they may build up on specific parts of the plants such as leaves reducing the rate of photosynthesis and therefore productivity 3 of 5 What else should a pesticide be? Be cost effective and chemically stable so it has a long half-life 4 of 5 What does inter-grated pests control systems involve? Providing suitable habitats, regular monitoring, removing pests mechanically and using pests as a last resort 5 of 5
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