The AGR1 Calculator is based on the University of Kentucky Lime and Nutrient Recommendations (AGR-1) publication.
Laboratory data and crop information are entered and recommendations are calculated for the entered data.

The One Fert calculator determines the application rate of one fertilizer given a set of soil test recommendations for nitrogen, phosphate, and potash.
The nutrient from which calculations are made is selected and the deficit or surplus of the other nutrients are calculated.

The Mult Fert calculator determines the application rate of up to three fertilizers given a set of soil test recommendations for nitrogen, phosphate, and potash.
The calculator will determine the best rates for the fertilizers selected to match the recommendations entered. Deficits or surpluses from the recommendation rates are reported.

The Mult Fert Econ calculator determines the application rate of up to three fertilizers given a set of soil test recommendations for nitrogen, phosphate, and potash.
The calculator will determine economic costs and the best rates for the fertilizers selected to match the recommendations entered.
Deficits or surpluses from the recommendation rates are reported.

The Econ Lime calculator will calculate corrected lime application rates based on lime relative neutralizing value (RNV). Economic factors are also calculated and are useful in comparing the real value of multiple lime sources.

The RNV value, for commercial sources of lime in Kentucky, is available here.

The Econ Lime II calculator will calculate corrected lime application rates for up to three lime sources based on lime relative neutralizing value (RNV). Economic factors are also calculated and are useful in comparing the real value of multiple lime sources.

The RNV value, for commercial sources of lime in Kentucky, is available here.

The Animal Waste calculator will determine manure application rates to meet nutrient demands of the crop. (Excel download)