Which of the following serve as biofertiliser in paddy fields?
Which of the following serve as biofertiliser in paddy fields?
- A
Anabaena
- B
Azospirillum
- C
Nostoc
- D
Both $(a)$ and $(c)$
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A nitrogen fixing bacterium that forms a loose assocation with the roots of crop plants is
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Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer
Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer
- [AIPMT 1993]
- [AIPMT 1999]
Which of the following symbiotic association is not useful as biofertilizer
$VAM $ is
$VAM $ is