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The Plant
& Pest
Diagnostic Clinic
is operated by Cooperative Extension and offers skilled and objective
diagnostic services by professionals from the Departments of Plant
Pathology, Horticulture, Agronomy
(Weed Science) and Entomology. In addition
to accurate diagnosis of your pest problem, you will be provided with
the most current information and recommendations!
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Plant
Pathology
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Capabilities
Plant
disease questions for horticulture and field crops can be answered.
Diseases are caused by biotic agents such as fungi, bacteria,
viruses and nematodes. They are also caused by factors such as
nurtrient deficiencies, water, or temperature stress of a combination
of these.
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Information
Required
Provide
complete information such as host plant (including cultivar),
a description of symptoms, history of symptom development, age
of the plant, what parts are affected, the distribution of the
problem and where the plant is located.
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Horticulture
Capabilities
Questions
relating to the culture and identification of vegetables, fruits,
houseplants, flowers, trees, vines and shrubs will be addressed
by specialists.
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Information
Required
Provide
as complete information as possible, such as flower and seed
color, bloom time, plant height, whether the plant is an annual
or perennial, and where it is located (yard, garden, greenhouse,
etc.)
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Weed
Science
Capabilities
Specialists
provide dependable diagnostic information involving weed identification
or herbicide injury. Chemical and cultural control practices
accompany weed identifications. In addition, information can
be provided on herbicide use and symptoms of herbicide injury.
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Information
Required
Provide
as much background information as possible, including the date
collected, descriptions of the problem, location, environmental
conditions, cultural practices and crop history.
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Entomology
Capabilities
Specialists
provide identification and information on insects, mites, spiders
and other related arthropods. Samples may be submitted from
a variety of indoor and outdoor sources, including field and
horticultural crops, ornamentals, structural and aquatic environments,
as well as humans, livestock and pets.
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Information
Required
Provide
information on the level of infestation and what host plants
or materials are infested. Also include a history of the setting
from which the sample was removed.
Insect
Sample Preparation:
Soft-bodied
specimens:
Examples are insect larvae, aphids, mites and spiders. Place
in a tight-sealing bottle with a liquid preservative such as
alcohol or vinegar.
Hard-bodied
specimens:
Examples are beetles, bugs, moths, ants and files. Wrap in loose
tissue and place in a crush-proof container.
Living
specimens:
Whether soft or hard-bodied, place with the host plant or damaged
material along with some loose tissue into a ventilated container.
Plant
Sample Preparation:
Plants should be wrapped in a dry paper towel and placed inside
a plastic bag before wrapping and mailing. Plants submitted
for horticultural and weed identification should include flowers
and/or fruit, leaves and roots. When submitting specimens for
diagnosis of disease, insect or herbicide injury, include several
plants showing a range of symptoms from healthy to unhealthy.
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