Right Now(R) Emerald mineral supplement: Because the grass is growing, right now. During calving and breeding season, nutrient requirements of the cow are much higher. High quality lush, early-growth pasture contains more readily available mineral nutrients and requires a focused mineral supplement. By including only those minerals likely to be deficient in your forage, the Emerald formula delivers a cost-effective solution. | Right Now Mineral Emerald Cattle Feed | Size 50 lbs