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

 

Symptoms

Figure 7 (left) Initial infection of seedlings. Sclerotinia had already colonized senescent leaves and begins to infect stems of tobacco seedlings.
Figure 8 (right) Sclerotinia start to colonize adjacent seedlings. Charactistic cottony mycelium is easily observed on surface of infected tissues.


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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