Five in one chelated zinc+boron+silicon fertilizer

Zinc ≥ 0.2% Boron ≥ 0.1% Effective Silicon ≥ 10% Calcium ≥ 10.5% Magnesium ≥ 1.8% Sulfur ≥ 4% Nitrogen ≥ 6% Humic acid ≥ 1%