Overview
List the characteristics of weeds Indicate the uses of weeds Briefly discuss methods of weed control State the effects of weed control methods on vegetation and soil Classify insect pests according to mouth parts Describe the nature of damage done by crop plant pests State effects of pests on the crop yield
What you'll learn
- Characteristics of Weeds:
- - Easily Dispersed
- - Long Dormancy
- Uses of weeds :
- - Medicinal.
- - Food, etc
- Methods of weed control:
- - Rotation of crop
- - Herbicides, etc
- Effects of weed control methods on vegetation and soil:
- - pollution of soil and ground water
- - contamination of livestock pasture, etc
- Classification of insect pests based on mouth parts - piercing and sucking insects - biting and chewing insects
- Description of the damage done by the crop pests
- Effects of crop pests on yield