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Plant growth-promoting bacteria (PGPB) are becoming integral tools in a more holistic farming model. Here, we are seeking to solve problems and stimulate growth with less chemical dependence. There are a variety of proven performers in this space, but the most productive are those from the spore-forming Bacillus family. Key players from this family can be multiplied on the farm to provide multiple benefits. In this article, we will explore the most researched and accomplished of this group, and I will provide some tips on how we can use them productively.

The best-performing Bacillus problem solvers include Bacillus subtilis, Bacillus amyloliquefaciens, Bacillus licheniformis, Bacillus pumilus, and Bacillus megaterium.

The AM fungi contribute up to 90% of plant P to host plants in ecosystems with reduced soil P availability; their contributions of plant nitrogen (N) are less pronounced and often depend on soil type, water content, and pH [3,4]. On the other hand, ECM fungi can acquire and immobilize significant amounts of organically bound N and P in the hyphae, representing up to 80% of plant N and P.