Question

Yield of paddy field can be increased by application of

• A. Iron bacteria
• B. Nostoc/Anabaena
• C. Archae bacteria
• D. Symbiotic bacteria

Answer 1

The correct option is B Nostoc/Anabaena

Blue-green algae are ideally suited for propagation in rice fields because blue -green algae form a self-sufficient system which is capable of fixing atmospheric nitrogen in organic forms and which grows upon a free water surface. It increases nitrogen content of moist soil and water bodies, which can be used in increasing paddy yield

So, the correct answer is 'Nostoc/Anabaena'