Twenty field experiments to evaluate selected bacterial isolates of Pseudomonas spp. were established throughout the cotton belt during 1985. Superior strains were isolated from diverse soils and were extensively evaluated in controlled was obtained in many locations. Much greater control as obtained hen the organisms in the seed furrow as either a liquid suspension or granular peat product than when applied directly to the cotton seeds in a peat-based carrier. Disease control by the biological agents was superior to in-furrow application of chemical fungicides in many of the trials.