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HEAT CANKER - SMALL GRAINS
Air temperatures in the 80's with sunshine creates soil temperatures that can cause plant injury to both grass and broadleaf crops. In severe cases a constricted area completely girdles the base of the plant at the soil line. This can lead to a toppling over of the plant at that point. In less severe cases, there may be little or no constriction, but as new leaves emerge, they will have one more yellowish to whitish stripes across the leaf - these areas were at the soil line several days earlier when the soil was especially hot. These stripes represent heat injury while the leaf was still in the sheath. No serious damage is expected from this injury.
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