Azos. Nitrogen Fixing Bacteria.


Azos is the common term sometimes used for nitrogen fixing bacteria. And nitrogen is one of the key components in plants’ growth and plant health. In this post we’ll talk about nitrogen fixing bacteria such as Paenibacillus polymyxa and their use as a biofertilizer.

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Nitrogen Fixing Bacteria

Nitrogen fixing bacteria are an important part of  the nitrogen cycle. They have the unique ability to take atmospheric nitrogen (N2) and convert it into ammonia (NH3). Ammonia is

Azos - Azo. Nitrogen fixation
Nitrogen Fixing Bacteria help grow healthier plants.

a form of nitrogen that can be utilized by plants. While nitrogen fixation doesn’t sound like much, in fact it is extremely important. Plants cannot use N2, so without nitrogen fixing bacteria, plants would quickly deplete the nitrogen in the soil.

Since nitrogen is one of the most expensive inputs for the farmer, the use of nitrogen fixing bacteria has come into standard use.

Paenibacillus polymyxa

Paenibacillus polymyxa is a nitrogen fixing bacteria and is considered a plant growth promoting bacteria (PGPB). Living in the rhizosphere (root zone), this beneficial soil bacteria forms a symbiotic relationship with the plant. Paenibacillus polymyxa provides several benefits to the plant, including;

Commercial Products Containing Paenibacillus polymyxa

Custom Biologicals produces to commercial products that contain Paenibacillus polymyxa; Custom N2 and Biota Max™.

Custom N2 is a highly concentrated liquid biofertilizer and Biota Max is a unique effervescent tablet. Both products contain azos, or nitrogen fixing bacteria.

Custom Biologicals

Custom Biologicals, home of Biota Max™, manufactures and distributes a wide variety of biological products including products that contain azos. Distributor inquires, both domestic and international, are encouraged. Contact Custom at (561) 797-3008, or via email at

Azos, azo, azo’s are another word for nitrogen fixing bacteria. The terms likely originates from azote which is French for nitrogen.

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