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Plant Diseases/Opportunistic diseases

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Question
What are they and how do they work?

Thank you.

Answer
Marianne:
I usually hear the term "opportunistic microorganisms" used in my profession.  This essentiality means that a microorganism does not a disease normally, but when the plant becomes stressed or in a weakened state, then the mocroorganism does have the ability to cause a disease.  Plants can become more susceptible to many plant diseases when they are stressed for a variety of reasons.  This is why, as "plant custodians", we should pay a lot of attention to good nutrition and other environmental factors that promote a vigorous plant.

Regards
Steve

Plant Diseases

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Dr Stephen Vann

Expertise

Plant Diseases and Disorders of Lawn Grasses, Trees, Vegetables,and Ornamentals

Experience

Plant Diseases Identification and Management

Education/Credentials
B.S. Botany --- Miss. State Univ. M.S. Plant Pathology --- Miss. State Univ. Ph.D. Plant Pathology --- Texas A & M Univ.

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