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| Action-type |
Action |
Time |
Cost |
| Outsource:
Disease |
Conversation
with Extension Plant Pathologist |
7
Days |
$0 |
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Description |
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Maria
mails plant samples along with a Plant Diagnostic Checksheet
to a university Plant Pathology Diagnostic Lab. Maria sent two
plants exhibiting symptomology and one plant that appeared healthy.
Diagnostician Judy O'Mara talks through the steps she goes through
to sort out the cause of the chlorosis. Her activities include
checking color and health of the plants' root systems and making
a microscope slide from a root section to check for signs of
root rot pathogens, requesting pH and electrical conductivity
(EC) tests on the root medium, and in-house tests for the common
tospoviruses and cucumber mosaic virus. She also consulted several
available references and the web to glean leads. |
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Results |
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No
indication of root rot pathogens was observed.
(photo
courtesy of Marci Spaw) |
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Extension
Associate Joy Pierzynski performed saturated medium extracts
to measure pH and EC on a sample of root media from each of
the plants.
| Sample |
Exhibiting
Symptoms |
pH
|
EC
(mmhos/cm) |
|
#1 |
Yes |
6.64 |
0.841 |
| #2 |
Yes |
6.30 |
0.713 |
|
#3 |
No |
6.01 |
0.816 |
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Extension
Associate Joy Pierzynski used Agdia ImmunoStrip Test Kits to
perform simple tests for three very common viruses. |
|
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| |
| Test
|
Result |
| Impatiens
Necrotic Spot Virus (INSV) |
Negative |
Tomato
Spotted Wilt Virus
(TSWV) |
Negative |
| Cucumber
Mosaic Virus |
Negative |
|
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| |
Test
kits from Agdia, a commercial supplier, are used to test for
Cucumber MosaicVirus and the tospoviruses INSV (Impatiens Necrotic
Spot Virus) and TSWV (Tomato
Spotted Wilt Virus).
(photo
Courtesy of Marci Spaw) |
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