Sprayer Tank Mix Calculator
How much pesticide goes into each tank: dose per decare or per 100 L water, tank size, water volume and field area.
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Getting the Tank Mix Right
Labels state doses two ways: per decarea (ml or g per decare) or per water volume (per 100 L). The tool handles both: total water = area × application volume; tanks = total water ÷ tank size; product per tank = dose × decares that tank covers (area basis) or dose × tank ÷ 100 (volume basis). A 400 L tank at 30 L/da covers 13.3 da — at 150 ml/da that is 2 L of product per fill.
The classic field error is doubling up: dosing per-100L rates as if they were per-decare, or vice versa — check which one your label uses. Calibrate actual water output first (spray a known area with water only); the label dose assumes correct coverage. Partial last tanks need proportionally less product.
Frequently Asked Questions
My last tank is only half needed — how much product?
Scale by the remaining area, not the tank: the tool shows the partial fill's water and product amounts. Never dump a full dose into a partial tank.
What application volume should I use?
Field crops with flat-fan nozzles: 15-40 L/da; orchards with air-blast: 50-100+ L/da depending on canopy. Wind, nozzle type and target (contact vs systemic) shift it — the label's range governs.
Can I mix two products in one tank?
Only when compatibility is known (labels or a jar test). Add in the standard order — water-soluble bags, wettable powders, suspensions, then liquids — with agitation running.
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Sprayer Tank Mix Calculator