Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu
Symptoms of Fusarium Head Blight (FHB) have started to show up in barley and wheat (Figures 1 & 2). Although the season started at low risk, weather conditions shifted right at the start of flowering and have kept us at high risk over the past 2-3 weeks (Figure 3). Tips for scouting for FHB were shared in the update last week https://sites.udel.edu/weeklycropupdate/?p=20324. Over the next week, symptoms should be very visible to walk fields and assess the level of FHB present.
Figure 1. Wheat head with bleaching and orange sporulation due to Fusarium Head Blight
Figure 2. Barley heads with symptoms of FHB
Figure 3. FHB Risk Model for May 26, 2022 (wheatscab.psu.edu)