Fungicide Dose Calculator

Work out fungicide dose instantly with clear inputs, formula shown and shareable results.

About Fungicide Dose Calculator

Protectant fungicides are dosed per litre of spray solution, so the tank charge is simply label dose x tank capacity. Multiplying by the number of loads gives the product to buy, and the interval times the number of sprays shows how long the protective programme covers.

Formulas

Tank charge

Product per tank = label dose (per L) x tank capacity (L)

Programme

Total product = per tank x tank loads; programme days = interval x sprays

Worked example

With the default values below, Fungicide Dose Calculator returns Fungicide Per Tank of 400.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Label Doseminimum 0.01 g or mL per litre: 2 g or mL per litre
Tank Capacityminimum 1 L: 200 L
Number Of Tank Loadsminimum 1: 3
Spray Intervalminimum 1 days: 10 days

Results

Fungicide Per Tank: 400.00
Total Fungicide Required: 1,200.00
Total Water Required: 600.0
Programme Duration: 30

Step by step

1Values used
2Tank charge
3Programme
4Fungicide Per Tank= 400.00
5Total Fungicide Required= 1,200.00
6Total Water Required= 600.0
7Programme Duration= 30

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Observe the label's maximum number of applications per season, the pre-harvest interval and worker re-entry period. Residue violations can make a crop unsaleable.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Observe the label's maximum number of applications per season, the pre-harvest interval and worker re-entry period. Residue violations can make a crop unsaleable.

Frequently Asked Questions

How should I rotate fungicide chemistry?

Alternate FRAC mode-of-action groups between sprays and never use a single-site fungicide more than two or three times in a season, or resistance builds quickly.

Does a longer interval save money?

Only if disease pressure is low. Protectants wash off and grow out within 7-14 days; stretching the interval through a wet spell usually costs more in yield than the spray saved.