Tank-Mix Compatibility Calculator for Ukraine: W.A.L.E.S.+ + pH Antagonism + Law 1492-III Bee Buffer

How the calculation works

The calculator bakes six rules from Batch 3 pesticide-kb. One: W.A.L.E.S.+ is the canonical addition order into the tank — Wettable powders first (WP/WG/WDG/SG/SP, pre-slurry in cold water), Agitation continuous 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 + surfactants last (SL/AS/adjuvants). The physics: water-dispersible solids need hydration time and EC emulsions collapse when added before water. AMS + water conditioners are the EXCEPTION and go in BEFORE any AI in hard water. Two: pairwise antagonism — every C(n,2) pair is looked up in the Top-30 UA documented matrix (Batch 3 §5.2). Examples: glyphosate + clethodim (ACCase) is incompatible; copper + Bacillus is incompatible. Missing pairs fall to heuristics (glyphosate + HRAC-1, biological + copper/sulphur). Three: a 4-product hard cap — 60 years of field research shows reliability drops sharply beyond four products. Four: the small-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, abort 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 AI 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 top-60 UA-registered catalog (pesticide-kb §E). 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 (TANK_MIX_HARD_CAP). 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 top-line 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.