URB Natural Microbial Inoculant, 4 LiterBoosting crop yields has never been easier! While the idea of microbial inoculants for stimulating crop production is not new, careful and deliberate design of a formulation to contain multiple, naturally occurring phylogenetic groups of organisms with complementary functionalities and noticeable effects from seed to final flush, with little or no need for added chemical fertilizers and pesticides is innovative. URB Sciences believes the design of the