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Sandra Jensen's Images

Title: Extension Support Specialist
Organization: Cornell University
Unit: Plant Pathology and Plant-Microbe Biology
Country: United States

Sandra Jensen has been the primary diagnostician at the Cornell Plant Disease Diagnostic Clinic since April of 2004 working with Karen Snover-Clift, Director of the Diagnostic Clinic and Associate Director of the NEPDN. She has a B.S. in Natural Resources from Cornell University, with a field of interest in forestry. Prior to joining the Diagnostic Clinic staff, Sandra worked as a Research Support Specialist for Professor George Hudler in the Department of Plant Pathology and Plant-Microbe Biology at Cornell University. In that capacity, she assisted with research and Extension projects involving pests of trees and shrubs with a focus on conifers.  
Remove Filters: Foliage Diseases(X) Herbaceous(X)
23 Images of 3 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5492304 mycelial neck rot Botrytis tulipae Rough yellow lesions on surface of an infected bulb
5492305 mycelial neck rot Botrytis tulipae Dark fungal sclerotia on roots of infected (potted) plants
5492306 mycelial neck rot Botrytis tulipae Closer view of dark fungal sclerotia on roots of infected (potted) plants.
5458681 Impatiens Necrotic Spot Virus Tospovirus INSV Foliar symptoms.
5458088 mycelial neck rot Botrytis tulipae Dark fungal sclerotia developing on roots might be mistaken for clumps of media.
5458376 rust Puccinia pelargonii-zonalis Lesions on underside of leaf, close view
5458377 rust Puccinia pelargonii-zonalis a single teliospore
5458378 rust Puccinia pelargonii-zonalis Urediniospores
5458379 rust Puccinia pelargonii-zonalis Close view of one lesion on the underside of an infected leaf. Note the pustules breaking open in the center where spores are being liberated.
5458380 rust Puccinia pelargonii-zonalis Urediniospores and Teliospores.
5458381 rust Puccinia pelargonii-zonalis Numerous urediniospores with a few two celled teliospores also visible.
5458382 rust Puccinia pelargonii-zonalis Foliar lesions as viewed on underside of infected leaf.
5458383 rust Puccinia pelargonii-zonalis Numerous foliar lesions as viewed on underside of infected leaf.
5458384 rust Puccinia pelargonii-zonalis Underside of severely infected geranium leaf. Note the lesion on the petiole.
5458385 rust Puccinia pelargonii-zonalis Upper surface of severely infected geranium leaf. Note the lesion on the petiole.
5458386 rust Puccinia pelargonii-zonalis A single lesion on the underside of an infected leaf. This lesion looks like a happy face.
5458090 mycelial neck rot Botrytis tulipae general view of symptomatic plant showing decay of bulb
5458089 mycelial neck rot Botrytis tulipae Symptoms of Botrytis tulipae, Tulip Fire, on leaves and petioles.
5458101 mycelial neck rot Botrytis tulipae Infected bulb exhibiting rot with dark sclerotia developing on surface.
5458103 mycelial neck rot Botrytis tulipae Black sclerotia and gray mycelium and spores developing on roots of infected plants.
5458104 mycelial neck rot Botrytis tulipae Dieback of leaf tips and neck rot, with dark fungal sclerotia present on rotted tissue of the bulb.
5458105 mycelial neck rot Botrytis tulipae Dark sclerotia developing on an infected bulb.
5458093 mycelial neck rot Botrytis tulipae Tulip Fire: foliar symptoms caused by Botrytis tulipae.

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