Sodium Application Calculator

Inputs

Select sample:

Base Saturation Na percent: i

This is the percentage of your soil’s nutrient holding sites occupied by sodium. Where to find it: On your soil test report under Sodium Base Saturation, Na percent BS, or Na percent. If you do not have it: Request a soil test that includes base saturations. Tip: Use a result taken within the last 12 months.

CEC (me per 100g): i

CEC shows how well your soil holds nutrients. Where to find it: On your soil test report listed as CEC, Cation Exchange Capacity, or Total CEC. If you do not have it: Request any standard soil test that includes CEC. Rough guide: Sandy 3 to 8, Pumice 4 to 10, Loams 12 to 20, Clays 20 to 40 plus.

Texture: Drainage:

Farm and report details

Farm name

Date

Soil inputs

Parameter	Value	Comments
Soil texture
Drainage class
CEC (cmol(+)/kg)
Soil sodium (base saturation percent)

Sodium application recommendation

Item	Recommendation
Recommended sodium rate	kg NaCl per ha
Product and grade
Safety status
Suggested application timing

Expected response and economics

Metric	Value
Expected milk response	%
Indicative return on investment	%

Sample	Na base sat percent	CEC (me/100g)	Texture	Drainage	Area (ha)	Rate (kg NaCl/ha)
No batch results available.

Disclaimer
This calculator and report are based on trial data and research and take into account selected factors that may influence sodium requirements. They provide general information only and are intended as a guideline to support discussions with your professional adviser. They do not take into account all of the variables that can affect milk production or farm performance and should not be relied on as complete, accurate, or up to date for your particular circumstances.

This calculator does not constitute financial advice, investment advice, or a recommendation to buy or sell any product. If you require financial advice you should consult a licensed financial adviser.

Before making any decision about applying salt to pasture or changing your farm management, you should obtain recent soil and herbage tests and seek advice from a qualified nutrient management adviser, veterinarian, or other appropriately qualified professional.

To the maximum extent permitted by New Zealand law, Dominion Salt Limited and its employees and agents are not liable for any loss, damage, cost, or expense, whether direct or consequential, arising out of or in connection with any use of, or reliance on, this calculator, this report, or the information they provide.

Return on Investment (ROI)

Milk response percent: i

This percent is a lookup based on Base Saturation Na%. In batch mode, it uses the average BS Na% across extracted samples. In single mode, it uses the BS Na% in the Inputs section.

Milk solids per cow (kgMS): Milk price ($ per kgMS): Salt cost ($ per kg): Spreading cost ($ per ha):

ROI mode:

Total farm area (ha): Total cow numbers:

Sample	Hectares (ha)
No samples loaded.

ROI percent:

Net return (whole farm):

Total samples
Samples with calculated rate
Average suggested rate	kg NaCl/ha
Total entered area	ha