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प्रश्न
Describe the main ideas behind the biological control of pests and diseases.
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उत्तर
Biological control means life against life. It’s a natural and eco-friendly concept. It employs natural organisms to control the population of pathogens and pests in an ecosystem. Classical examples are Trichoderma which is an antagonist against many soil-borne plant pathogens. Similarly, Penicillium inhibits the growth of Staphylococcus and therefore has been successfully used in the production of Penicillin antibiotics to control many human bacterial pathogens.
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संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
How do organic farmers control pests?
Name the bioactive molecules produced by Trichoderma polysporum and Monascus purpureus.
Given below is a list of six micro-organisms. State their usefulness to humans.
- Nucleopolyhedrovirus
- Saccharomyces cerevisiae
- Monascus purpureus
- Trichoderma polysporum
- Penicillium notatum
- Propionibacterium sharmanii
Name the type of association that the genus Glomus exhibits with higher plants.
What is VAM?
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
What is mycorrhiza?
Which of the following is TRUE regarding Bacillus thuringiensis?
From the following which one is NOT a bacterial herbicide?
Which of the following is the INCORRECT statement?
Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.
| Column I | Column II |
| A. Lady bird | i. Methano bacterium |
| B. Mycorrhiza | ii. Trichoderma |
| C. Biological control | iii. Aphids |
| D. Biogas | iv. Glomus |
The correct answer is:
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Organic farmer use Baculovirus as biological control agents. Explain.
- Give an example of a genus of virus used as narrow spectrum insecticidal biocontrol agent.
- How does its use serve as an aid in overall integrated pest management programme?
