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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
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.
Name the type of association that the genus Glomus exhibits with higher plants.
______ are controlled by the microbial herbicide Phytophthora palmivora.
Which of the following is TRUE regarding Bacillus thuringiensis?
Name any genetically modified crop.
Describe the main ideas behind the biological control of pests and diseases.
Organic farmer use Trichoderma as biological control agents. Explain.
give any two examples of microbial herbicides.
Why are the biocontrol agents preferred over the chemical pesticides?
