ORTHOPHOSPHATEvs.POLYPHOSPHATE

Plant Uptake of the Phosphate

Plants absorb P as Orthophosphate ions H2P04- and HP042- Polyphosphates are a chain link molecule of orthos and are not available to the plant until conversion.

Orthophosphates	Polyphosphates
Immediately usable The form of Phosphorus taken up by the plant High purity Higher investment Neutral pH	Higher levels of impurities Not immediately available Must convert in soil to the Orthophosphate before the plant can use it Good carrier for micronutrients Less expensive

Source: Farm Facts –Phosphorous fertilization in crop production and TVA.

Polyphosphate Production

Super Phosphoric Acid (SPA) combined with NH3
Processed through a Pipe Reactor = 10-34-0 or 11-37-0

• Chain Link Molecule of Orthophosphate
• Unavailable to the plant in that form
• Must convert to orthophosphate
• Time and Temperature

ALPINE Production

White and Green Orthophosphate acid, KOH, Aqua Ammonia, APP and water

• Chemically combined to form MKP, DKP, MAP and DAP
• Hot mix reaction – Chemically combining the raw materials
• MKP – very soluble and highly available
• Neutralized to virtually non corrosive state.

Click here to VIEW ALPINE PLOT RESULTS

 

Phosphorus Product Comparison

Synergistic Effect of Nitrogen and Potassium on the Uptake of Phosphorous

Dr. John L. Strauss Director of Agronomy Services Tulsa Oklahoma

Treatment	% P Absorbed from Fertilizer
P	12.1 %
N + P	20.3%
P + K	13.1%
N + P + K	22.3%