ORTHOPHOSPHATE vs. 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.

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

10-34-0

ALPINE G22

(11.7 lbs/gal) x (0.34) = 3.978 lbs P2O5/gallon 
times 5 gal/A

Equals 19.89 lbs P2O5/A
(12.82 lbs/gal) x (0.22) = 2.82 lbs P2O5/gallon                                
times 4 gal/A

Equals 11.3 lbs P2O5/A
30% Ortho-phosphate
5.97 lbs/A in the Ortho-phosphate form
70% Ortho-phosphate
7.9 lbs/A in the Ortho-phosphate form
70% Poly-phosphate
13.92 lbs/A in the Poly-phosphate form
30% Poly-phosphate
3.4 lbs/A in the Poly-phosphate form
Even after 30 days, with a soil pH of 7.2, 50% of the phosphate will still 
be in the Poly-Phosphate form, being unavailable for the crop to utilize. 
TVA research.

- high impurities
- high viscosity, hard meter evenly

- includes Micro package
- no urea
- low salt index, guaranteed seed safe
- low impurity level
- product storability
- low viscosity
- non-corrosive
Orthophosphates
Immediately usable 

The form of Phosphorus taken up by the plant

High purity

Higher investment 

Neutral pH
Polyphosphates
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

Featured Product All

ALPINE G22®

Liquid Fertilizer


ALPINE G22 is applied in the seed furrow for maximum plant benefits. Its formulation is low in salt, and impurities; making it seed safe for even the most sensitive crops.