ISSUE 8 July 3, 2008
UPDATE FROM THE NDSU PLANT DIAGNOSTIC LAB
The tables below summarize samples received and processed by the NDSU Plant Diagnostic Lab for the past week (June 25 through July 1, 2008).
Table 1. Number of Sample Submissions by Category.
|
Sample Category |
# of samples |
|
Field crops |
19 |
|
Woody ornamental -Deciduous |
11 |
|
Seed health/Phytosanitary |
23 |
|
Woody ornamental - Evergreen |
3 |
|
Perennial |
1 |
|
Total |
57 |
Table 2. Diagnoses by state, county, and host.
|
State-County |
Host |
Diagnosis |
|
KS-Grove |
Field Pea (Pisum sativum) |
Foliar bacterial disease (Pseudomonas sp.) |
|
KS-Unknown |
Field Pea(Pisum sativum) |
Foliar bacterial disease (Pseudomonas sp.) |
|
MN-Polk |
Sugar beet (Beta vulgaris altissima) |
Fusarium root rot (Fusarium sp.) |
|
MN-Polk |
Sugar beet (Beta vulgaris altissima) |
Rhizoctonia root rot (Rhizoctonia solani) |
|
ND-Barnes |
Corn (Zea mays) |
Bacterial leaf spot (Pseudomonas sp.) |
|
ND-Bottineau |
Sunflower (Helianthus sp.) |
Herbicide carryover suspected |
|
ND-Cass |
Blue spruce (Picea pungens) |
Stigmina needle blight (Stigmina lautii) |
|
ND-Cass |
Blue spruce (Picea pungens) |
Stigmina needle blight (Stigmina lautii) |
|
ND-Cass |
Blue spruce (Picea pungens) |
Stigmina needle blight (Stigmina lautii) |
|
ND-Cass |
Durum wheat (Triticum turgidum) |
Fusarium root rot (Fusarium sp.) |
|
ND-Cass |
Durum wheat (Triticum turgidum) |
Common root rot (Bipolaris sorokiniana) |
|
ND-Cass |
Durum wheat (Triticum turgidum) |
Pythium root rot (Pythium sp.) |
|
ND-Cass |
Elm (Ulmus species) |
Squirrel damage |
|
ND-Cass |
Silver maple |
Mechanical damage |
|
ND-Foster |
Elm (Ulmus species) |
Scale insects (Order homoptera) |
|
ND-Foster |
Elm (Ulmus species) |
Woolly elm aphid (Eriosoma americanum) |
|
ND-Grand Forks |
Apple (Malus domestica) |
Plant bugs (Family Miridae) |
|
ND-Griggs |
Potato (Solanum tuberosum) |
Herbicide injury |
|
ND-Griggs |
Potato(Solanum tuberosum) |
Herbicide injury |
|
ND-Cass |
Corn (Zea mays) |
Herbicide injury |
|
ND-McLean |
Blue spruce (Picea pungens) |
Unknown abiotic disorder |
|
ND-Morton |
Wheat (Triticum species) |
Drought stress damage |
|
ND-Morton |
Wheat (Triticum species) |
Herbicide injury |
|
ND-Mountrail |
Scotch Pine (Pinus sylvestris) |
Drought stress damage |
|
ND-Mountrail |
Spruce (Picea species) |
Root injury |
|
ND-Ramsey |
Green Ash (Fraxinus pennsylvanica lanceolata) |
Ash anthracnose (Gloeosporium aridum) |
|
ND-Steele |
Dry Bean (Phaseoulus vulgaris) |
Herbicide injury |
|
ND-Towner |
Watermelon (Citrullus lanatus) |
Heat canker |
|
ND-Traill |
Soybean (Glycine max) |
Insufficient sample |
|
ND-Walsh |
Apple (Malus domestica) |
Girdled branch |
|
ND-Walsh |
Apple (Malus domestica) |
Frost injury (early season) |
|
ND-Walsh |
Siberian elm (Ulmus pumila) |
Spring cankerworm (Paleacrita vernata) |
|
ND-Walsh |
Sugar beet (Beta vulgaris altissima) |
Herbicide injury |
|
ND-Wells |
Linden (Tilia sp.) |
Eriophyid mites (Family Eriophyidae) |
|
SD-Dewey |
Choke cherry (Prunus virginiana) |
Herbicide injury |
Kasia Kinzer
NDSU Plant Diagnostician
NDSU.PlantDiagnosticLab@ndsu.edu
701.231.7854
http://www.ag.ndsu.nodak.edu/diaglab/
