Giving credit where credit is due.
Here's a scenario
Year 1: Lime was spread at a rate of 2 ton/acre across the entire field where the recommendation called for Lime. (Actual spread file was capped at 2 Ton Max)
Year 2: Nothing was applied in the areas where the recommendation called for 2 tons, and the remaining areas received credit for that previous application.
Here is how that equation would look. What we are saying is anywhere that it's calling for Lime to subtract 3000 units of ECCE. In this instance our ECCEvalue was 1500.