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DISEASE & NUTRITION ISSUES DISEASES  Diseases need three components 'the disease triangle' in order to develop: the presence of the disease pathogen, a suceptible host plant and favorable environmental conditons for which the pathogen can develop. Therefore, in order to become familiar with a particular disease you must know the disease's symptoms, the conditions that favor that particular disease and plants that are susceptible to that disease. If you reduce one of the three essential components diseases need to develop you will be able to reduce the impacts of that particular disease or be able to prevent it from occurring. Below are a few diseases commonly seen in greenhouse environments.
Botrytis	Tri-State Diagnostic Clinics Maine Disease Diagnosis Form ME New Hampshire Disease Diagnosis Form NH Vermont Disease Diagnosis Form VT	Root Rot
Rust	Powdery Mildew	Viruses
Additional Information Agdia Testing Inc. – Supplies and Services for Plant Pathogen Testing: http://www.agdia.com/ Cornell Disease Factsheets of Greenhouse & Foliage Plants: http://plantclinic.cornell.edu/greenhouse/index.htm PennState Plant Pathology Factsheets: http://www.ppath.cas.psu.edu/EXTENSION/PLANT_DISEASE/ UC IPM Pest Management Guidelines ‘Diseases": http://www.ipm.ucdavis.edu/PMG/selectnewpest.floriculture.html UMASS Floriculture Update 'Diseases Photo Library': http://www.negreenhouseupdate.info/index.php/diseases Univ. of Maine Plant Disease Images: http://pmo.umext.maine.edu/ipddl/ClinicImages/ImagesOpeningPage.htm Nutrition  Fertilizer-Injector Calibraton 'UNH': http://extension.unh.edu/resources/representation/Resource000882_Rep928.pdf NC State University - Information on Pour Thru Sampling: http://www.ces.ncsu.edu/depts/hort/floriculture/crop/crop_PTS.htm   Scouting & Managing Greenhouse Nutrient Problems: 'UNH': http://extension.unh.edu/resources/representation/Resource000887_Rep937.pdf UMASS Floric. Update 'Nutritional Disorders Photo Library':http://www.negreenhouseupdate.info/index.php/nutritional-disorders

                                                                           

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