plant pathology

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  • Rooted in a Cornell Collaboration, New York State is Tops for Beets

    New York harvested more acres of beets than any other state according to the most recent Census of Agriculture. New York state is known for producing the most yogurt, cottage cheese and sour cream of any state in the U.S. But there’s a vegetable that – while not everyone’s favorite – is also No. 1…

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  • “Sampling” App Cuts Costs in Fight Against Pest and Disease

    Determined to increase the efficiency of monitoring pest and disease pressure for farmers, Cornell researchers have used field research to develop a new app called Sampling. Sampling aims to aid growers in the timing of their pesticide and fungicide applications, through the creation of action thresholds, or the limit when the cost of control is…

  • Cucurbit Downy Mildew on Cucumber: New Strains, New Varieties

    Cucurbit downy mildew (CDM) (Pseudoperonosporacubensis), is a serious disease of cucurbits worldwide that attacks all cultivated cucurbits. Symptoms progress from yellow, angular lesions on the upper leaf surfaces restricted by leaf veins to the production of gray sporangia that can be seen on the lower leaf surface. Lesions expand, become necrotic, and kill the leaves.…

  • Chrysanthemum White Rust: Good Management Prevents Major Losses

    by Elizabeth Lamb, Margery Daughtrey, Margaret Kelly Chrysanthemum white rust (CWR) is a fungal disease of chrysanthemums caused by Pucciniahoriana that can cause severe damage, including complete crop loss due to direct effects of the disease or to quarantine procedures. Pot mums, garden mums and mums grown for cut flowers are all susceptible to the…

  • Late Blight of Tomato and Potato in 2011: Watch for It and Participate in the New National Reporting System

    Two unexpected finds of late blight on tomato in greenhouses in the northeast during April plus detections in seed potatoes expose an unfortunate but important fact – everyone growing tomatoes and potatoes in 2011 needs to expect and thus prepare for late blight occurrence in their plants. Preparation is critical since late blight is a…

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