7-0-3 Cal Mag Max 4% Ca, 2%Mg
Calcium and Magnesium are very important secondary macro nutrients and part of the chlorophyll molecule which is necessary for sugar formation. Inadequate amounts of magesium will first appear as a general loss of green color at the bottoms of olders leaves (interveinal chlorosis). Continued deficiency will also affect younger leaves, followed by formation of lesions. Calcium and Magnesium deficiencies occur mostly in soils with a pH over 8 and acidic soils with a pH less than 6.5. High levels of calcium and potassium will also reduce Magnesium uptake.