Interaction Map Calculator
Free Science-Based Tool to Check Pesticide & Fertilizer Tank Mix Compatibility
About the Interaction Map Calculator
The Interaction Map Calculator is a scientifically validated, free online tool designed specifically for farmers, agronomists, and agricultural consultants to instantly check the compatibility of pesticides, insecticides, fungicides, and foliar fertilizers before tank mixing. This tool is based on decades of peer-reviewed research, university extension guidelines, and globally recognized jar test principles used by leading agrochemical companies.
In modern agriculture, tank mixing multiple crop protection chemicals and nutrients has become common practice to save time, labor, and fuel. However, improper mixing can lead to chemical precipitation, reduced efficacy, nozzle clogging, and severe crop phytotoxicity. The Interaction Map Calculator eliminates guesswork by providing accurate compatibility results in seconds.
- University of California Statewide IPM Program
- Purdue University Pesticide Programs
- WinField United Adjuvant & Compatibility Studies
- Syngenta, Bayer, BASF, and Corteva Agriscience official compatibility charts
- Indian Council of Agricultural Research (ICAR) recommendations
Why Interaction Mapping is Critical in Modern Farming
When two or more agrochemicals are mixed in a spray tank, complex chemical and physical interactions can occur. Hard water ions (Ca²⁺, Mg²⁺), extreme pH shifts, or incompatible formulations can cause:
- Precipitation and sedimentation
- Reduced biological efficacy
- Phytotoxicity (leaf burn, stunting, necrosis)
- Spray nozzle blockage
- Increased drift potential
How the Interaction Map Calculator Works
The calculator uses a comprehensive compatibility matrix built from over 500 verified chemical interactions. Each combination is classified into three categories:
- Safe (Green): No adverse reaction expected. Can be mixed directly.
- Caution (Yellow): Compatible only if proper mixing order and adjuvants are used.
- Danger (Red): High risk of incompatibility. Do NOT mix.
When Should You Use This Tool?
Use the Interaction Map Calculator every time you plan to:
- Mix insecticide + fungicide
- Add foliar fertilizer with pesticide spray
- Use micronutrients with herbicides
- Prepare broad-spectrum pest management spray
- Work with hard water or high-pH conditions
User Guidelines for Best Results
Even when the calculator shows "Safe", always follow these best practices:
- Conduct a jar test with actual field water
- Add products in the correct sequence (W-L-E-F): Wettable powders → Liquids → Emulsifiable concentrates → Fertilizers
- Use recommended water conditioner or buffer if pH is above 8 or below 5
- Agitate continuously during mixing and spraying
Common Dangerous Combinations to Avoid
Some well-known incompatible mixtures include:
- Glyphosate + Mancozeb (precipitation)
- 2,4-D Amine + MAP/Urea (pH shock)
- Copper-based fungicides + Phosphorous acid
- Sulphur + Oils or Captan
The Interaction Map Calculator instantly flags these and hundreds more risky combinations, helping you protect your crop and investment.
Developed and regularly updated by agricultural experts at Agri Care Hub in collaboration with Agile with Edele Interaction Map research team.
Start Using the Interaction Map Calculator Today
100% Free | No Registration Required | Mobile Friendly | Updated 2025 Data
Join thousands of progressive farmers who have prevented crop damage and saved lakhs in losses using this science-backed tool.
