Utah Pests
    Utah Pests
    IPM Pest Advisories
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    New Fact Sheet: Western Cherry Fruit Fly in Utah Orchards

    New Fact Sheet: Western Cherry Fruit Fly in Utah Orchards

    The western cherry fruit fly is the most important pest of sweet and tart cherries in Utah. Once the skin of fruits becomes soft enough to penetrate, adult females insert eggs with their ovipositor, and larvae develop inside the fruits. The result is "wormy" fruit that is unmarketable.

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    Wheat Diseases in Utah

    Wheat Diseases in Utah

    A pathogen that showed up in Cache County this year was wheat stem rust (Puccinia graminis). This pathogen can cause up to 70% yield loss in severe cases. Even though it is called stem rust it also colonizes leaf tissues and sometimes glumes and even seed. Stem infections weaken the stem and when the seed heads mature the stem may not be able to support the weight and break.

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    Downy Mildew in Alfalfa

    Downy Mildew in Alfalfa

    Downy mildew (Peronospora aestivalis) was found in Cache Valley late spring. The pathogen likes cool wet weather which we had plenty of this past spring. The symptoms you see consist of chlorotic or yellow blotches on the leaf surface. On the underside, the leaves are covered in a white to pale violet-colored fungal growth. Those are the spores and fruiting structures that emerge from the leaves.

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