How to Prevent Armillaria Root Rot on Apple Trees Armillaria spp.
The fungus Armillaria is truly a menace to apples and a number of other fruit trees, ornamentals, crops, and shrubs.
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Often referred to as the honey mushroom, shoestring fungus, or honey fungus, the Armillaria genus consists of a number of different species that can be devastating to an orchard.
What Is Armillaria Root Rot?
Armillaria is found throughout the world in both tropical and temperate regions, and it has been found in nearly every state in the US.
In addition to apple, some of the fruit trees that this pathogen attacks include peach, nectarine, apricot, almond, citrus, avocado, and loquat.
Veronica Basnayake of the North Carolina State University, in a study of soil borne plant pathogens, described this fungus as “one of the most prominent killers and decayers of deciduous and coniferous trees and shrubs.”
According to Melanie L. Lewis Ivey, an extension plant pathologist at the Department of Plant Pathology at The Louisiana State Agricultural Center reports that Armillaria is one of the leading causes of the premature death of fruit trees in the Southeast.
Part of the reason for this is that Armillaria can live in the soil for decades on large pieces of roots and fragments of stumps – ready to pounce as soon as a specimen growing in the vicinity becomes stressed and susceptible.
Although there is no effective control of this pathogen, as it is resistant to fungicides, there are steps you can take to minimize this devastating infection.
Read more about this how this fungus affects apricots here.
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