Crop Yield vs Soil Fertility Estimator

Our estimator provides a scientifically-based approximation of potential crop yield based on standard soil fertility parameters. While it can’t account for all variables like weather, pests, or specific farming practices, it offers a reliable benchmark when used with accurate soil test data. For precise predictions, combine these results with local agricultural extension advice.

The ideal fertility score varies by crop type, but generally, scores above 75 indicate excellent fertility, 50-75 is good, 25-50 is fair, and below 25 suggests poor fertility needing significant improvement. Our calculator adjusts these ranges based on your specific crop’s nutritional requirements.

For annual crops, test soil at least once per year before planting. For perennial crops, test every 2-3 years. Always test at the same time of year for consistent comparisons. More frequent testing (2-3 times/year) is recommended when making significant soil amendments or noticing crop health issues.

Yes, our calculator works for both conventional and organic systems. For organic farming, pay special attention to the organic matter percentage and biological activity (not directly measured here). The recommendations will prioritize organic amendment options when appropriate for your selected crop type.