Start / Machinery and application / Spraying, planting and spreading
Enter the tank, the spray volume, and the product dose to find out how much to put in each tank and how much product the area needs.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Fill the tank with half the water and turn on the agitation. Then add, in this order: wettable powders (WP, WG), suspensions (SC), concentrated liquids (EC), and, last, adjuvants. Top up with water to the final volume. Always check the manufacturer's leaflet and label.
How much product goes in the tank for each spray volume per hectare; the dot marks your volume.
Number of tanks needed to cover the area with each tank size; the highlighted bar is your tank.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Area covered per tank, product per tank and product per 100 liters for different spray volumes, with the rate and tank entered.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the tank capacity, the spray volume per hectare (the same as the sprayer calibration), and the product dose per hectare, in the label's unit. The calculator shows the area covered per tank, the amount of product for each full tank, the dose per 100 liters, and the total for the area.
Tank of 600 L, volume of 150 L/ha, rate of 1.5 L/ha and area of 20 ha.
Area per tank = 600 ÷ 150 = 4 ha. Product per tank = 1.5 × 4 = 6 L. Per 100 L of spray: 1.5 × 100 ÷ 150 = 1 L. For the 20 ha: 30 L of product in 5 tanks.
Fill half the tank with water, turn on the agitation, and add the products in the order below, topping up with water at the end. If in doubt, the label and the jar test take precedence.
| Order | Blend | Acronym |
|---|---|---|
| 1 | Wettable powders and water-dispersible granules | WP, WG |
| 2 | Suspension concentrates | SC |
| 3 | Soluble liquids | SL |
| 4 | Emulsifiable concentrates | EC |
| 5 | Adjuvants and spreaders | — |
Set the volume and pressure first, in the sprayer setting.
Multiply the dose per hectare by the area the tank covers. The tank area is the capacity divided by the spray volume per hectare.
Fill the tank halfway with water first, then add wettable powders, suspensions, concentrated liquids and, last, adjuvants. Check the label, because some products have their own rules.
Divide the dose per hectare by the spray volume per hectare and multiply by 100. With 1.5 L/ha and 150 L/ha of spray solution, it is 1 L per 100 L of spray solution.
It is a small-scale mix, in a clear container, in the same order and proportion as the real spray mix. It shows, before you fill the tank, whether there is flocculation, separation or precipitation.
Plan the mix so little is left over. The disposal of leftovers must follow the label, the agronomic prescription and environmental rules; never pour it into rivers, wells or drainage.
Triple-rinse the containers, keep them, and return them to the collection unit indicated on the invoice, as required by pesticide legislation.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
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