Tank-Mix Compatibility Calculator: W.A.L.E.S.+

How the calculation works

The calculator builds on six rules from ADAM's pesticide knowledge base. One: W.A.L.E.S.+ is the canonical addition order into the tank — wettable powders first (WP/WG/WDG/SG/SP, pre-slurried in cold water), continuous agitation via bypass flow, liquid flowables second (SC/OD/CS/FS — easy homogenization), emulsifiable concentrates third (EC/EW/UL — need water already present for a stable emulsion), solubles and surfactants last (SL/AS/adjuvants). The physics: water-dispersible solids need hydration time and EC emulsions collapse when added before water. AMS and water conditioners are the EXCEPTION and go in BEFORE any active ingredient in hard water. Two: antagonism for each pair — every C(n,2) pair is looked up among 30 combinations documented in Ukraine. Examples: glyphosate + clethodim (ACCase) is incompatible; copper + Bacillus is incompatible. Missing pairs fall to general rules (glyphosate + HRAC-1, biological + copper/sulphur). Three: no more than 4 products — 60 years of field research shows reliability drops sharply beyond four products. Four: the jar test — before the full tank-fill, combine 10 mL of each product in a 100 mL jar in the W.A.L.E.S.+ order, wait 15 minutes, and abandon the mix if you see separation, flocculation, gel, colour change, heat, or gas. Five: pH antagonism windows (sulfonylureas, glyphosate, copper, pyrethroids, biologicals). Six: Law 1492-III — if any active ingredient is bee-toxic, enforce 5 km aerial / 1 km near settlement / 500 m ground buffers, 48 h pre-notification to beekeepers via ОТГ, prohibited-hours window 09:00–20:00, T ≤ 30°C, wind ≤ 4 m/s.

1. 1

   Add product 1

   Pick an active ingredient from the catalogue of the 60 most common registered in Ukraine. The calculator auto-fills the primary formulation (EC/SC/WG/SL) and the W.A.L.E.S. position.

2. 2

   Add products 2–4 (optional)

   Up to 4 products. Beyond that the add button locks — 60 years of spray research shows reliability collapses past four products in a single tank.

3. 3

   Read the overall verdict

   ✅ Compatible — no conflict; ⚠️ Compatible with caution — partial conflict; 🚫 DO NOT MIX — documented antagonism, split the applications 5–7 days apart.

4. 4

   Check the W.A.L.E.S.+ order

   Each product lands in its slot (W / L / E / S) with a pre-slurry / pre-dilute / direct-pour note. Load the tank strictly in that order.

5. 5

   Read pairwise verdicts + pH warnings

   If any pair is partial / incompatible, read the rationale. If any AI carries a pH sensitivity (sulfonylureas, glyphosate, copper) test the tank-water pH (target 5–7 for most AI).

6. 6

   Run the small-jar test before tank-fill

   Mandatory at 3+ products. In a 100 mL jar, 10 mL of each in the W.A.L.E.S.+ order, shake, 15 minutes. Abort on separation / gel / colour / heat. The calculator is advisory; the jar test is the safety net.