A field experiment was conducted in 2025 at the Oregon State University Columbia Basin Agricultural Research Center in Adams, OR, to evaluate three “industry standard” fungicide treatments for stripe rust control in winter wheat. Stripe rust is an important yield-limiting disease in the dryland Pacific Northwest. A stripe rust–tolerant (‘VI Voodoo CL+’) cultivar was grown under no-till conditions. Fungicide treatments were applied at Feekes 8. Crop response was assessed using UAS-derived NDVI and yield components at maturity. Fungicide treatments had no impact on grain yield relative to the control. Fungicide treatments did not significantly affect test weight, protein, NDVI, or AUDPC.
Hagerty et al. (Sat,) studied this question.