Crop & Pest Report



forestry.zeleznik.bergdahl.ash anthracnose

Ash Anthracnose – A Recurring Problem (05/28/15)

Cool and moist weather during the period of ash budbreak has again led to high levels of ash anthracnose, a leaf disease common to our region.

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Ash Anthracnose – a Recurring Problem (06/12/14)

The cool weather we experienced for most of the spring held ash anthracnose in check this year in most parts of North Dakota.

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Winter injury to conifers (05/15/14)

Many evergreen trees are showing signs of winter injury across our region. “Winter injury” (also known as winterburn) is a generic term for unusual browning of needles, portions of trees, or entire trees that can occur throughout the winter months, but is often most noticeable in late winter/early spring.

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Bur oaks, bugs and birds (05/15/14)

In several communities around the state, young bur oak trees are showing damage from woodpecker activity. The damage is highly variable, but at its worst, some trees have been nearly girdled. The birds are not to blame, however, as they have been searching for a tasty meal – insect larvae located within the bark.

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Black rot canker on crabapple tree

Diseases of Apple Trees - Black Rot

Many people have been concerned in the last few weeks regarding problems with apple trees – both edible apples and ornamental crabapples – especially from the western part of the state.

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