Collar Rot in Tobacco Greenhouses
TB06 - Tobacco Disease Note 6
W. A. Gutierrez,  H. D. Shew, and T. A. Melton 


Factors that affect infection of collar rot

Figure 15.  Leaf spots on tobacco seedlings caused by propane gas and water condensation in greenhouses.
Figure 16.  Dead seedlings as a result of oil dripping from mower machines. These plants could be the primary infection point for Sclerotinia collar rot.

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Published by North Carolina Cooperative Extension Service
Distributed in furtherance of the Acts of Congress 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.

Revised July 2001 by Plant Disease and Insect Clinic