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Members' contributions
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Nitrogen-fixing nodules — TC Sood
Biological nitrogen fixation is the enzymatic reduction of nitrogen
from the air into ammonia. This enzyme is found in certain bacteria
of the soil — Rhizobium, Bradyrhizobium, and Azorhizobium.
These bacteria are collectively known as rhizobium.
The effect of rhizobium on leguminous plants is to induce the formation
of nodules on the leguminous plants. In these nodules, bacteria
are able to fix nitrogen and convert to ammonia. This ammonia is
available to the plant for growth.
The nodule development starts with the rhizobia attaching to the root
hair of the plant. There are different groups of fast growing and
slow growing rhizobia. The formation of effective nodules is a key
factor that impacts the plant's potential to fix nitrogen.
The real pulses problem – PN Singh
Your campaign to bridge the gap between the academic world and the
agricultural sector sounds good. But the reality is that the biggest
challenge for farmers who grow pulses is availability of quality seed.
There are a lot of new varieties of seeds that have been developed
and even tested in farmers’ fields to show good results. But
where is the infrastructure and support system to distribute among
farmers and make them aware of these? What India needs is better systems
at the grassroots level, not statements at the policy level.
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