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प्रश्न
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
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उत्तर
Leguminous plants contain Rhizobium bacteria in their root nodules which can convert atmospheric nitrogen to nitrates and replenish the soil. So, nitrogenous fertilizers are not applied in the field.
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संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
Name a genus of fungi that forms a mycorrhizal association with plants.
Give two examples of microbial pesticides with their hosts.
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
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 is the INCORRECT statement with respect to biocontrol agents?
Identify the INCORRECT statement regarding Bacillus thuringiensis.
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:
Which one of the following is NOT a bioherbicide of bacterial origin?
