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Disease
Invasive Carpophilus Beetle Marching into Valley Orchards
When PCA Justin Nay began finding fine, powdery frass in Peterson traps set to monitor navel orangeworm (NOW)…
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Category: Disease
Disease
Industry Efforts Quell Product Contamination Risk
Climate that promotes growth of fungi and insect feeding that provides openings for fungal infection are major drivers…
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Disease
A Closer Look at Biofungicides
When weather conditions are right, fungal diseases can devastate yields in almond, pistachio and walnut orchards. A growers’…
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Disease
Management of Almond Blast and Walnut Blight
Bacterial infections such as almond blast and walnut blight pose significant challenges for growers. Bacterial blast is primarily…
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Disease
Crown Gall/Ganoderma Connection in Almonds Being Investigated
A link between an aggressive wood decay fungus and crown gall in almond trees is being studied by…
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Disease
Disease Prevention from Cultural and Cost-Saving Angles
A preventative systems approach to disease management in almond orchards involves cultural practices and management of irrigation and…
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Disease
Rain on Walnut’s Parade
Walnut blight and brown apical necrosis (BAN) are perennial disease problems in some parts of the state, particularly…
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Disease
Preparing for Diseases in Cool, Wet Years
Diseases in nut crops can be affected by both cooler and warmer weather and intense weather changes can…
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Disease
Treatment Options for Management of Walnut Scale and Frosted Scale
Walnut scale (See Figure 1) is an important economic pest of walnuts in California. High populations of walnut…
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Disease
Bacterial Blast Hit Much of the State
Weather played havoc on the 2023 almond crop. Cold, high rainfall and even snow in parts of the…
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