What is the biological method for controlling weeds?

Biological control (biocontrol) involves the introduction of natural enemies (insects, mites and pathogens) of a target weed that will reduce the density of the weed to a level that is acceptable and that will maintain the weed density at that level.

What are examples of biological control agents?

Examples are microbial control agents such as Bt, viruses, and nematodes. The egg parasitoid, Trichogramma, is an example of an insect biocontrol agent that continually needs to be released to provide effective control of its host.

Are weeds biological control agents?

Biological control of weeds is broadly defined as the use of an agent, a complex of agents, or biological processes to bring about weed suppression. All forms of macrobial and microbial organisms are considered as biological control agents.

What are the 4 methods of controlling weeds?

Weeds can be controlled or eliminated by any of the following methods.

• Cultural method of weed control. a.
• Biological Method: This involve the use of living organism, plants or animals to control weeds or reduce the weeds. a.
• Chemical method of weed control: This involve the use of chemical such as herbicides.

What are the four groups of bio control agents?

Microbial Biocontrol Agents These microbes include bacteria, fungi, viruses, and protozoans.

What is the chemical used to control weeds?

herbicides
Chemicals that are used to kill plants or weeds are called herbicides. Soil surface application: Herbicides are usually applied to soil surface to form a uniform herbicide layer.

What are the three practices in classical biological control?

There are three general approaches to biological control; importation, augmentation and conservation of natural enemies. Each of these techniques can be used either alone or in combination in a biological control program.