Conditions Involved in the Severe Losses of Newly Set Tobacco in North Carolina, 1937

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Abstract
Severe losses in stands of newly transplanted tobacco grown for flue-curing occurred during 1937 in western and north-central N. Carolina. Final stands were below normal, even after making as many as 3 to 5 practically complete replantings over much of the severely affected area. A considerable acreage was plowed up and seeded to other crops, particularly in western N. Carolina. The mortality and subsequent slow rate of plant growth were undoubtedly influenced by a combination of factors such as injury by larvae of wireworms (Elateridae) and of crambids (Crambidae), improper placement of fertilizer in the ridges, size and condition of plants used for late transplanting, and inclement weather. The most important factor was the injury from feeding by adults of the tobacco flea beetle, Epitrix parvula, on the plant tops and by larvae of the beetle on the roots and in the stems. Characteristic symptoms of the injury observed in the field were obtained throughout the summer of 1937 at Oxford, N. C, by confining adults of the tobacco flea beetle on newly set tobacco.

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