The content is just an excerpt from the complete note for JSS 1 Third Term Agricultural Science Lesson Note – Uses of Weeds and Methods of Weeds Control. Check below to download the complete PDF
CONTENT:
(1) Uses of weeds
(2) Methods of weeds control
Sub-Topic 1: Uses of weeds
Some weeds are:
- used as cover crops.
- used as forage grasses and legumes for feeding animals e.g elephant grass.
- used to prepare compost and green manure e.g mucuna, pueraria.
- used to control soil erosion e.g bahama grass.
- serve medicinal weed e.g lemon grass.
- used as fuel (firewood) for cooking
EVALUATION:
State five uses of weeds.
Sub-Topic 2: Methods of weeds control
Weed control refers to any deliberate effort made by man to eliminate weed seeds or stop weed growth.
Weeds can be controlled by using following methods:
- Mechanical weed control
- Chemical weed control
- Cultural weed control
- Biological weed control
- Physical/mechanical weed control. It may be in the following forms:
- Hand pulling: The use of hand to remove weeds. It is most effective in the control of annual and biennial weeds of row crops.
- ii. Hoeing : It entails using hoes to remove weeds.
iii. Mowing: The use of mower to clear weeds.
