Understanding weed biology. Chuck Mohler Cornell University. Outline. Intro - what is a weed, types of weeds Perennial weeds Types of perennial weeds Cutting up perennials Weed seeds Germination cues Season of germination Seed longevity in the soil Seed size Seed production
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• The plant has limited resources
• Disturbed environments are risky
• Tiny seeds spread the risk over many offspring
• Seedlings can be small because in a recently disturbed environment, competition is limited.