The following website was shared with me as a great resource for identifying greenhouse insect and disease problems along with lots of IPM tips for greenhouse growers. 

 http://www.greenhouse.cornell.edu/pests/index.htm

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Melissa Riley
Central Region Ag Education
Horticulture Teacher
1005 State University Drive,  Box 4060
Fort Valley, GA 31030
office - 478-825-6067
cell - 478-973-4071
fax - 478-825-6980
www.centralregionaged.org