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"Põllumajandus kursuse inglisekeele aine" - 1 õppematerjal

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Weed Management Handbook

Weed Management Handbook Summarized by: Student X Introduction • What is a weed? • Disadvantages and advantages • Seed bank • Different ways to deal with weeds • Resistance of herbicides What is a weed? • Older definitions: -a plant not valued for its use or beauty -a plant whose virtues have yet to be discovered • Modern definitions: -plants that are considered undesirable by producers -unwanted plant which in some way hinders or interfers with human activity. (Crops may at some point also be weeds) Weed disadvantages • Reduces crop yield – weeds and crops have to share resources such as light, water and nutrients • Reduces crop quality and health – increases moisture and disease levels • Delay harvesting – conservation of moisture may delay ripening Beneficial effects of weeds • Valuable indicators • Help against erosion • Many weeds are used as herbs for flavo...

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