cdgmoney250
Well-Known Member
Magnesium is actually quite a mobile element. Mag deficiencies typically start at lower leaves because the needed nutrients are being allocated to the new growth. Foliar application works the most efficiently, but is only a quick fix until the ph of the soil/coco has been brought back into range (most likely cause of deficiency).Mag deficient. Get some foliar action going on. Quickest way to turn things around with cal and Mag. They are immobile elements. So the plant cannot move them from one part to another. Therefore foliar works best
Calcium on the other hand is quite immobile once it has been assimilated into a new plant cell, as you stated.
Calcium and Magnesium have the same ionic form, and therefor are competing elements during the cation exchange at the root zone. This is why soil/coco Ph is so critical for maximum uptake of both nutrients.