
ISSUE 8 July 2, 2009
PERIODIC REPORT OF THE NDSU PLANT DIAGNOSTIC LAB
About 122 samples were processed in the past three weeks, and 48 of these were from county extension offices. Periodic reports are available on-line at http://www.ag.ndsu.nodak.edu/diaglab/reports.htm. The table below summarizes the routine diagnoses for the period June 10 - July 1, 2009 (research, phytosanitary, negative survey data, and seed health samples are not included):
|
State-County |
Host |
Diagnosis and Confidence Level |
|
MN-Clay |
Plant ID request |
Common chickweed (Stellaria media) - confirmed |
|
MN-Clay |
Sugar Beet (Beta vulgaris altissima) |
Nutrient Imbalance - suspected |
|
MN-Clay |
Sugar Beet (Beta vulgaris altissima) |
Rhizoctonia Root Rot (Rhizoctonia solani) - confirmed (3) |
|
MN-Polk |
Raspberry (Rubus sp.) |
Iron Deficiency - suspected |
|
MN-Todd |
Hosta (Hosta sp.) |
Hosta Virus X (HVX) - confirmed |
|
MN-Traverse |
Spring Wheat (Triticum aestivum) |
Unknown Abiotic Disorder - suspected |
|
ND-Bowman |
Durum Wheat (Triticum turgidum) |
Wheat Streak Mosaic Virus (WSMV) - confirmed |
|
ND-Bowman |
Silver Maple (Acer saccharinum) |
Growth Regulator Effect - suspected |
|
ND-Bowman |
Spring Wheat (Triticum aestivum) |
Unidentified Insect |
|
ND-Burleigh |
Blue Spruce (Picea pungens) |
Eriophyid Mites - confirmed |
|
ND-Burleigh |
Blue Spruce (Picea pungens) |
Stigmina Needle Blight (Stigmina lautii) - confirmed |
|
ND-Burleigh |
Blue Spruce (Picea pungens) |
Unknown Abiotic Disorder - suspected (2) |
|
ND-Cass |
American Cranberry bush (Viburnum trilobum) |
Eriophyid Mites - confirmed (2) |
|
ND-Cass |
Engelmann Ivy (Parthenocissus quinquefolia) |
Scab (Sphaceloma sp./spp.) - suspected |
|
ND-Cass |
Green Ash (Fraxinus pennsylvanica lanceolata) |
Ash Anthracnose (Gnomoniella fraxini) - suspected |
|
ND-Cass |
Maple (Acer sp./spp.) |
Maple Anthracnose (Aureobasidium apocryptum) - suspected |
|
ND-Cass |
Plum (Prunus sp.) |
Environmental Stress - suspected |
|
ND-Cass |
Sugar Beet (Beta vulgaris altissima) |
Rhizoctonia Root Rot (Rhizoctonia solani) - confirmed |
|
ND-Dickey |
Winter Wheat (Triticum aestivum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-Golden Valley |
Durum Wheat (Triticum turgidum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-Golden Valley |
Juniper (Juniperus spp.) |
Environmental Stress - suspected |
|
ND-Grand Forks |
Winter Wheat (Triticum aestivum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-Kidder |
Blue Spruce (Picea pungens) |
Pine Needle Scale (Chionaspis pinifoliae) - confirmed |
|
ND-Kidder |
Winter Wheat (Triticum aestivum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-LaMoure |
Winter Wheat (Triticum aestivum) |
High Plains Virus (HPV) - confirmed |
|
ND-LaMoure |
Winter Wheat (Triticum aestivum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-Mchenry |
Blue Spruce (Picea pungens) |
Rhizosphaera Needle Cast (Rhizosphaera kalkhoffii) - confirmed |
|
ND-Mchenry |
Blue Spruce (Picea pungens) |
Spider Mite Injury - suspected |
|
ND-Mchenry |
Canola (Brassica napus var. napus) |
Unknown |
|
ND-Morton |
Juniper (Juniperus spp.) |
Unknown Abiotic Disorder - suspected |
|
ND-Morton |
Quaking Aspen (Populus tremuloides) |
Unknown Abiotic Disorder - suspected |
|
ND-Mountrail |
Spring Wheat (Triticum aestivum) |
Wheat Streak Mosaic Virus (WSMV) - confirmed (2) |
|
ND-Richland |
Sugar Beet (Beta vulgaris altissima) |
Aphanomyces root rot (Aphanomyces cochlioides) - confirmed |
|
ND-Richland |
Sugar Beet (Beta vulgaris altissima) |
Fusarium Root Rot (Fusarium sp./spp.) - confirmed |
|
ND-Richland |
Sugar Beet (Beta vulgaris altissima) |
Rhizoctonia Root Rot (Rhizoctonia solani) - confirmed (2) |
|
ND-Sheridan |
Blue Spruce (Picea pungens) |
Environmental Stress - suspected |
|
ND-Sheridan |
Spring Wheat (Triticum aestivum) |
Nitrogen Deficiency - suspected (2) |
|
ND-Sheridan |
Spring Wheat (Triticum aestivum) |
Triticum Mosaic Virus (TriMV) - pending confirmation |
|
ND-Towner |
Plant ID request |
Houndstongue (Cynoglossum officinale) - suspected |
|
ND-Traill |
Apple (Malus domestica) |
Apple Black Rot (Physalospora obtusa) - suspected |
|
ND-Traill |
Apple (Malus domestica) |
Branch Girdling- suspected |
|
ND-Walsh |
Bur Oak (Quercus macrocarpa) |
Oak Anthracnose (Apiognomonia errabunda) - suspected |
|
ND-Walsh |
Ponderosa Pine (Pinus ponderosa) |
Mechanical Damage - suspected |
|
ND-Ward |
Rose (Rosa spp.) |
Glyphosate Injury - suspected (2) |
|
ND-Ward |
Rose (Rosa spp.) |
Phytoplasma - suspected (2) |
|
ND-Wells |
Spruce (Picea spp.) |
Environmental Stress - suspected |
|
SD-Dewey |
Potato (Solanum tuberosum) |
Growth Regulator Effect - suspected |
Kasia Kinzer
NDSU Plant Diagnostician
NDSU.PDL@ndsu.edu