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Frogeye Leaf Spot of Tobacco

By: Andrew Ernst, Lindsey Thiessen Tobacco Disease Information

Frogeye leaf spot disease on flue-cured tobacco is caused by the fungal pathogen, Cercospora nicotianae. This disease has historically been an issue for ripe tobacco, but has become more common over the last couple of years. The disease is found most commonly on lower, more mature leaves of the plant, but can also affect green tissues. Infections are not often severe enough to impact yield, but, under conducive environmental conditions, can cause severe damage to leaves.

Brown Spot of Soybean

By: Andrew Ernst, Lindsey Thiessen Soybean Disease Information

Brown spot is a common pathogen in soybeans in North Carolina. Symptoms from brown spot may be confused with other leaf spot pathogens, and accurate diagnosis is important for management decisions.