Question
If azolla is grown in rice field along with rice crop,
then how much nitrogen is fixed byazolla in rice field ?Solution
Azolla is a free floating water fern which is in symbiotic association with Anabaena azollae  fixes 40-60 kg N/ha in rice fiels
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How is V related to R?
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Read the direction carefully and answer the following question.
Anita, Mahima, Rajan, Lata and Deepti are five cousins. Anita is twice as old a...
