Phosphite 29 is pure Potassium Phosphite fertilizer solution that is manufactured in one step process by reacting Phosphorus Acid and Potassium Hydroxide in a patented high temperature rapid cooling process that preserves the maximum H3PO3 (Phosphorous Acid) form. This unique Phosphite 29 manufacturing process neither contains nor requires any H3PO3 preserving or solubility additives that are necessary in competitive products. As a result Phosphite 29 economically feeds and protects plants through superior Phosphorous Acid nutrition. Phosphite 29 is rapidly absorbed by plant blades for maximum nutritional benefits in order to prevent and correct nutrient deficiencies and to promote disease resistance. Note: With foliar applications phosphite ions are taken up directly by the plant foliage and may undergo a degree of conversion to phosphate ions or be utilized directly by the plant as phosphite ions. Do not mix with fixed copper or copper based fungicides if the pH of the spray solution is below 6.0 pH.