Magnesium: Aids in chlorophyll development and phosphorus metabolism. Regulates the uptake of other nutrients. Once-a-year bluegrass handled with a nutrient Option that contains potassium phosphate as the supply of phosphorus (left); and precisely the same nutrient solution with potassium phosphite as being the supply of phosphorus (right). Once-a-year bluegrass taken https://andersonj554csk4.wikirecognition.com/user