When Do Foliar Pyraclostrobin Fungicide Applications Produce Profitable Soybean Yield Responses?

Fig. 5. Cumulative probability distributions of field-level yield response (YR) to pyraclostrobin applications in 218 trials with and in 48 trials without visible fungicide strips exhibiting the "greening effect" as observed on the late-season color-infrared (CIR) digital aerial imagery of the soybean canopy. Cumulative distribution curves indicate a probability of yield response at a specific value and below. For example, there was approximately 35% probability of a yield response at and below the break-even (2 bu/acre) for trials showing the fungicide-induced "greening effect." Probability of profitable yield response can be estimated as the distance from 1 on the Y axis to the intersection of each curve with the break-even yield response line.



Image from Plant Health Progress article:
When Do Foliar Pyraclostrobin Fungicide Applications Produce Profitable Soybean Yield Responses?