Sodium Application Calculator

Drystock

Inputs

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:

Drystock Return on Investment (ROI)

Deficiency Level (Na status):

Base LW response (kg/head):

Stock class multiplier:

Adjusted LW response (kg/head):

ROI mode: i

ROI mode options

Whole farm: Use total head for each stock group and enter the treated area (ha). Costs and returns are calculated for the whole treated area.

Per hectare: Enter head per ha for each stock group. The calculator assumes 1 ha of treated area and reports costs and returns on a per hectare basis.

Treated area (ha):

Stock groups i
Start with one stock group. Use "Add another stock group" if you want to include more types of stock.

Type: Class: Head (total head): Price ($ per kg LW):

Salt cost ($ per kg NaCl): Application cost ($ per ha):

ROI %:

Net return (whole farm):

Return ratio (revenue to cost):

Cost per head:

Net return per head:

Farm and report details

Farm name

Date

Prepared by

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 (Drystock)

Metric	Value
Adjusted LW response (kg/head)	kg
Net return
Return on investment
Return ratio	to 1

Advisor notes

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.