


Stephanie K Porter
91 posts
















I’d like to take a moment: for Iowans, southern rust has not yet made near the northern advancement as it did last year at this point. Keep an eye in the field, and learn how to identify common vs southern rust








Gray leaf spot and bacterial leaf streak can look similar on corn leaves, but management is different. Fungicides work against gray leaf spot, but not bacterial leaf streak. Both diseases produce long lesions between leaf veins. Gray leaf spot lesions are rectangular with straight edges. Bacterial leaf streak lesions are tan to brown with wavy margins. A helpful diagnostic trick: hold the leaf up to the light. Bacterial lesions often show bright yellow halos, unlike gray leaf spot. #corn #grow26 #agx @alisonrISU @maddishires @MahDuffeck @MandyBish1 @baldpathologist @MartinChilvers1 @badgercropdoc @UNL_CropWatch @NeCGA @iowa_corn @sdcorn







