This industry blog post (OMEX Canada) promotes calcium (Ca) and molybdenum (Mo) seed dressings for soybean, framing both as micronutrients important for early nodulation. It states these seed treatments are not supported by traditional extension research or recommended by agronomic associations, and notes North Dakota State University found no consistent or significant yield response to such dressings. According to OMEX's CEO (a former University of Manitoba plant pathologist), calcium acts as a signal that allows compatible rhizobia bacteria to enter soybean roots and initiate nodule formation, while molybdenum is a cofactor for nitrate reductase, the enzyme needed for nitrogen metabolism and nodule function; without adequate Mo, nodulation is poor and nodules are non-functional. Symptoms attributed to molybdenum deficiency include poor leaf structure and weak, pale leaf color, since nitrate reductase reportedly makes up a large share of leaf structure. Soil Mo in the region is described as generally adequate, but repeated canola crops can deplete supply. Molybdenum is stated to be mobile in phloem and xylem, so foliar correction after emergence is possible; calcium/molybdenum seed dressings are presented as a first line of defense at planting. The company's spokesperson claims seed dressings can produce four to five-bushel yield gains in stress years, though this is an industry/marketing source rather than peer-reviewed research, and the article itself acknowledges the scientific basis remains debated with regulatory changes only recently easing product availability in Canada.