3. Crop Protection - Weeds, Pests and Diseases Flashcards
1
Q
What can happen as agricultural ecosystems are greatly simplified?
A
Weed competitors, disease and pest populations can all multiply rapidly, reducing sustainability
2
Q
What do weeds compete with?
A
Crop plants
3
Q
What do pests and diseases damage?
A
Leaves, reducing productivity
4
Q
Why do annual plants make successful weeds?
A
Rapid growth
Short life cycle
High seed output
long-term seed viability
5
Q
What are three perennial weed adaptations?
A
Competitive adaptations
Storage organs
Vegetative reproduction
6
Q
What type of animals are most pests of plant crops?
A
Invertebrates (e.g. insects, nematodes, worms)
7
Q
What three things can plant diseases be caused by?
A
Fungi, bacteria, viruses
8
Q
What type of animal can plant diseases be carried by?
A
Invertebrates
