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प्रश्न
State the difference in organic farmers approach from that of conventional pest control methods.
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उत्तर १
Organic farmers control pests by maintaining a balanced ecosystem where pests are kept at manageable levels without eradication, using natural predators and biocontrol methods. Conventional methods use chemicals that kill pests and beneficial organisms indiscriminately. Organic farming avoids toxic pesticides, promoting ecological balance and reducing chemical dependence.
उत्तर २
| Sr. No. | Aspect | Organic Farmers Approach | Conventional Pest Control |
| 1. | Pest Control Method | Maintain pests at manageable levels through natural checks. | Kill pests using chemical pesticides indiscriminately. |
| 2. | Use of Chemicals | Avoid toxic chemical pesticides. | Use synthetic chemical insecticides and pesticides. |
| 3 | Impact on Ecosystem | Preserve beneficial insects that prey on pests. | Harmful and beneficial insects alike. |
| 4. | Pest Eradication Goal | Pest eradication is undesirable; pests are part of the ecosystem. | Aim to completely eradicate pests. |
| 5. | Environmental Effect | Promotes ecological balance, reduces pollution. | Causes environmental pollution and chemical residues. |
Notes
Students can refer to the answer according to their preferred marks.
संबंधित प्रश्न
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
Name a genus of baculovirus.
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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
Mention one advantage and one disadvantage to a farmer who uses them.
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
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Match the column A with B and rewrite correct pairs
| A | B | |
| I | Mycoherbicides | Cactoblastis |
| II | Bacterial herbicides | Alternaria |
| III | Insects as herbicides | Xanthomonas |
Which of the following statements regarding biocontrol agents are correct?
Which of the following is the host for microbial pesticide Beauveria bassiana?
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
The free-living fungus Trichoderma can be used for ______.
Organic farmer use Trichoderma as biological control agents. Explain.
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A farmer grew 2 varieties of corn crops in fields A and B. He grew normal corn crops in field A and GM corn crops in field B. He observed corn borers attacked only in field A. To control it, spores of Bt were sprayed in field A.
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- What effect will the spores of Bt have on the insect pest?
- How has field B developed resistance against this pest?
give any two examples of microbial herbicides.
Which one of the following is NOT a bioherbicide of bacterial origin?
