Home
Class 12
BIOLOGY
Farmers have reported over 50% higher yi...

Farmers have reported over `50%` higher yields of rice by using which of the following biofertilisers ?

A

Bacillus thuringiensis

B

Lagume-Rhizobium symbiosis

C

Mycorrhizae

D

Azolla pinnata

Text Solution

Verified by Experts

The correct Answer is:
D
Azolla pinnata is a small free floating freshwater fern which multiplies rapidly, doubling every 5-7 days. The fern can live with Anabaena symbiotically in rice field to fix atmospheric nitrogen. It does not interfere with their growth. In some South-East Asian countries, especially China, the rice fields are regularly provided with Azolla.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following is used as food?

Which of the following options includes biofertilisers ?

Which one of the following is not used as biofertiliser ?

Which of the following is a non-symbiotic biofertiliser ?

Biofertilisers are prganisms that enrich the nutrient quality of the soil. Which of the following can be used as biofertilisers ?

Which of the following pteridophyte is used as a biofertiliser ?

When sulphuric acid is poured over zinc, which of the following gas is formed ?

Which one of the following can be used as biofertiliser in cotton field?