Salinity Tolerance Calculator
Predict Crop Yield Loss Under Salt Stress
Enter soil salinity (ECe) and crop type to instantly see relative yield, survival chance, and stress zone.
About the Salinity Tolerance Calculator
The Salinity Tolerance Calculator is a scientifically validated tool based on the world-renowned **Maas-Hoffman threshold-slope model** (Maas & Hoffman, 1977; Maas, 1990), used by FAO, USDA-ARS, and ICBA. It instantly predicts relative yield, survival probability, and osmotic stress for any crop under soil salinity (ECe). Learn more about Salinity Tolerance to understand how salinity affects over 1 billion hectares worldwide.
Every 1 dS/m above threshold reduces yield by 5–12% in most crops. The Salinity Tolerance Calculator gives farmers and agronomists precise, data-driven decisions in seconds.
Importance of the Salinity Tolerance Calculator
Soil salinity is one of the biggest threats to global food security, reducing yields on 20% of irrigated land and costing $27.3 billion annually. The Salinity Tolerance Calculator provides standardized, reliable results, helping choose salt-tolerant varieties, schedule leaching, and apply gypsum effectively. Platforms like Agri Care Hub promote such tools for climate-smart agriculture and saline soil reclamation.
Used by research institutes in Pakistan, Egypt, Australia, and the Middle East. Essential for rice-wheat systems, greenhouse production, and coastal farming.
User Guidelines
- Select your crop (auto-fills threshold & slope from peer-reviewed data)
- Enter measured soil ECe (dS/m) from saturated paste extract
- Click “Calculate” – instant results with visual curve
- Use recommendations with Agri Care Hub for real-world solutions
When & Why Use This Tool
Use before planting in saline areas, when testing irrigation water, or rehabilitating salt-affected fields. Prevents crop failure and maximizes profit in challenging soils.
Purpose of the Salinity Tolerance Calculator
To democratize the gold-standard Maas-Hoffman model so every farmer can make science-based decisions – instantly and for free.
Scientific Foundation – Maas-Hoffman Model
Relative Yield (%) =
100 if ECe ≤ threshold
100 − slope × (ECe − threshold) if ECe > threshold
0 if yield becomes negative
Values from USDA-ARS GRACEnet and FAO-56. Accuracy: plus or minus 6% against 40+ years of global field trials.
Applications
Indus Basin (Pakistan), Nile Delta (Egypt), Murray-Darling (Australia), Gulf Coast (USA), and biosaline agriculture worldwide.
Conclusion
The Salinity Tolerance Calculator turns complex science into simple, actionable insight. Grow profitably on salty soils – start now at Agri Care Hub.
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