The Iowa Soybean Association On-Farm Network has released a fungicide management calculator tool it has developed to help Iowa growers determine the probability of seeing a profitable return from using fungicides on soybeans.
The calculator allows growers to put in their own soybean prices (either projected or a price they’ve already booked for their crop) and actual product and application costs to see whether fungicide use is likely to pay off. The data used to create the calculator came from five years ofcomparisons made through 282 replicated strip trials across the state using BASF’s Headline fungicide.
After inputting market price and cost, the calculator returns a graph showing soybean yield response to the fungicide, the break even yield increase the grower would need to justify fungicide use, the probability of actually seeing a profit, projected profit/loss from using the fungicide, and, finally, the number of years out of five that fungicide use could be expected to be profitable.
The calculator is available for anyone to use at www.isafarmnet.com/calc.