The microorganism species were applied to soybean seeds separately as individual treatments, in each of the possible dual, or triple combinations, with no microorganism application and compared to a nematicide treatment (carbofuran) applied at the equivalent of 100 kg a.i. ha−1 incorporated into the soil. All applications included inoculation with M. incognita but in the screen house study a no-nematode, no-microorganism control was included.