What is Azospirillum and how does it work?

Azospirillum is a nitrogen-fixing bacteria. Earth's atmosphere contains over 75% nitrogen. Azospirillum is able to capture atmospheric nitrogen and convert it into plant available forms. Nitrogen is fundamental for photosynthesis because it is essential for chlorophyll production. In other words, nitrogen keeps your plants green and it is also in every protein molecule. 

A popular variety is Azospirillum brasilense. Xtreme Gardening's Azos is made...