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प्रश्न
How does the activity of each one of the following help in organic farming?
Mycorrhiza
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उत्तर
Fungi are known to form symbiotic associations with plants, this association is called mycorrhiza.
The fungal symbiont in these associations absorbs phosphorus from soil and passes it to the plant.
This association help the plant to absorb phosphorus in a natural way thus help in Organic farming.
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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?
Organic farmers prefer the biological control of diseases and pests to the use of chemicals for the same purpose. Justify
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?
The free-living fungus Trichoderma can be used for ______.
Name any genetically modified crop.
Nucleopolyhedrovirus do not show ______.
- 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?
Why are the biocontrol agents preferred over the chemical pesticides?
