Discuss various methods for weed control.
[5 Marks]
[Crop Protection Management]
[5 Marks]
[Crop Protection Management]
Solution:
The various methods for weed control are:
a) Preventive Control
Weeds can be prevented by methods like crop rotation, cover crops (when used as green manures or dead mulches) and summer ploughing. [1 Mark]
b) Cultural Control
It Includes mowing, burning, mulching, competitive planting, hand pulling, grazing, and cultivation. [1 Mark]
c) Chemical control
The use of herbicides offers the only practical and selective method of managing certain weeds. Herbicide applications are usually cost effective. [1 Mark]
d) Biological control
Biological control can be used in an integrated weed management program. Biological weed control involve crop rotation and intercropping. [1 Mark]
e) Mechanical method
Some weeds can be controlled or suppressed by mechanical means such as slashing and ploughing. [1 Mark]
The various methods for weed control are:
a) Preventive Control
Weeds can be prevented by methods like crop rotation, cover crops (when used as green manures or dead mulches) and summer ploughing. [1 Mark]
b) Cultural Control
It Includes mowing, burning, mulching, competitive planting, hand pulling, grazing, and cultivation. [1 Mark]
c) Chemical control
The use of herbicides offers the only practical and selective method of managing certain weeds. Herbicide applications are usually cost effective. [1 Mark]
d) Biological control
Biological control can be used in an integrated weed management program. Biological weed control involve crop rotation and intercropping. [1 Mark]
e) Mechanical method
Some weeds can be controlled or suppressed by mechanical means such as slashing and ploughing. [1 Mark]
