Armillaria mellea
There are no known fungicides or management practices that will kill "Armillaria" "mellea" after infection without damaging the infected plant, but there are practices that can extend the life of the plant and prevent further spreading. The best way to extend the plant life is to improve the host condition through supplemental watering and fertilization. To prevent further spread, regulate irrigation to avoid water stress, keep the root collar dry, control defoliating pathogens, remove stumps, fertilize adequately, avoid physical root damage and soil compaction, and don't plant trees that are especially susceptible to the disease in places where "Armillaria mellea" has been recorded. There is also some evidence that biological control using the fungus genus "Trichoderma" may help. "Trichoderma" is a predator of "Armillaria mellea" and is often found in woodchips. Therefore, chipping or grinding dead and infected roots will give "Trichoderma" its preferred habitat and help it proliferate. Solarization will also create an ideal habitat as dry soil and higher soil temperatures are preferable for "Trichoderma" but poor conditions for "Armillaria mellea."