2025-08-11 00:00:00 YellowSpotWM assists users to make informed management decisions about yellow leaf spot (tan spot) management in Australian wheat crops. YellowSpotWM accounts for the major factors that influence yield loss due to yellow leaf spot in paddocks by allowing estimation of likely profit or loss from applying a foliar fungicide. YellowSpotWM takes account of costs, yield benefits, grain price, and seasonal conditions to give best case, worst case and most likely estimates of financial return from a fungicide application.