Diseases in Tobacco Greenhouses 

TB07 - Tobacco Disease Note No. 7

Late stages of disease

Figure 11.  Depending upon the environmental conditions in the greenhouse, lesions on leaves continue growing, producing the characteristic target spot.
Figure 12. Characteristic concentic rings can be observed in older infections.

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Distributed in furtherance of the Acts of ConPublished by North Carolina Coogress of May 8 and June 30, 1914. Employment and program opportunities are offered to all people regardless of race, color, national origin, sex, age, or disability. North Carolina State University at Raleigh, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperating.

Reformatted October 2001 by Plant Disease and Insect Clinic