Phosphate Calculator

Phosphate Application Calculator

Your Phosphate Requirements

Capital P required to meet optimum olsen P levels for your soil type Capital P required to meet your target lift in olsen P Maintenance P requirements per annum
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Optimum olsen P for your soil type Capital P required to lift olsen P by 1 unit in your soil type


Input your information below and calculate your farms annual Maintenance and Capital Phosphate requirements. Using this information we can also advise you on the form of Phosphate and the products you should be applying in order to achieve maximum production for the best price.

Basic Soil Type
Total Hectares
Stocking Rate SU/H
Average Annual Rainfall (mm)
Soil PH
Current Olsen P
Target lift in Olsen P
Will Nitrogen also be applied?

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Your details