Which is the biocontrol agent?
Which is the biocontrol agent?
Biological control or biocontrol is a method of controlling pests such as insects, mites, weeds and plant diseases using other organisms. Biological control agents of plant diseases are most often referred to as antagonists. Biological control agents of weeds include seed predators, herbivores, and plant pathogens.
What is biocontrol Inundative?
Inundative biocontrol – a large quantity of natural enemies are periodically applied to reduce weed populations. Biopesticides – the application of formulations containing whole natural enemies (generally a pathogen that causes disease in a weed) or toxic components of natural enemies to reduce the weed population.
How is Bacillus theory Genesis used as biocontrol agent?
Bacillus thuringiensis is a bacterium and is a biocontrol agent against cotton bollworm insects. They produce a toxin that specifically kill the insect larvae when the toxin is released in their gut.
Is used as biocontrol agent?
The pathogenic microorganisms like bacteria and virus are also used in the process of Biocontrol. Bacteria attack the digestive tracts of insects, and an example of a bacteria used in Biocontrol is bacillus thuringiensis which is a soil-dwelling bacterium.
What is Antixenosis and Antibiosis?
Antixenosis occurs when there is non-preference for the resistant plant compared to a susceptible one, while antibiosis applies to disruption of life parameters (survival, development, fecundity) of the insect.
What are the disadvantages of biological control?
Disadvantages
- The predator you introduce may not eat the pest.
- The predator could eat a useful species.
- The predators population may increase and get out of control.
- The predator may not stay in the area where it is needed.
Is Xanthomonas campestris a biopesticide?
Complete answer: >Xanthomonas Campestris is a bacteria that causes disease in plants, meaning this bacteria is itself a pest.It caused” Black-rot” in crucifers by darkening the vascular tissues. So, it is not a biopesticide.
Is Bt cotton a transgenic species?
Bt cotton is a genetically modified organism (GMO) or genetically modified pest resistant plant cotton variety, which produces an insecticide to combat bollworm.
Is oscillatoria a biocontrol agent?
Using microorganisms to control plant diseases and pests are biocontrol. Option C: Oscillatoria, Rhizobium, Trichoderma: they are biofertilizers and biocontrol agents respectively. Option D: Nostoc, Azospirillum, Nucleopolyhedrovirus: they are biofertilizers and pathogens respectively.