Q. Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer?

 2064  178 AIPMTAIPMT 1998Microbes in Human Welfare Report Error

Solution:

Azolla plays a very important role in rice production. Azolla and its nitrogen-fixing partner, Anabaena, have been used as green manure to fertilize rice paddies and increase production. With the help of Azolla, rice can be grown year after year, several crops a year, with little or no decline in productivity; hence no rotation of crops is necessary.