>>12760152The honest answer is i dont know. But i have been dicking around with different ways plants absorbe iron, and it does influence growth alot. The oxidation state of Fe is important too. Ferro ions are harder to absorb then ferri ions for some plants and vice versa. I can imagine that the magnetic field has something to do with it. But this is just a gess off the top of my head, it could be totally retarded.