These are plain old American chestnut trees without blight resistance. This close-up shot of an American chestnut tree at House Rock Nature Preserve in Martic Township shows damage caused by an invasive fungus that nearly wiped out the native trees… But the spores of the fungus spread mercilessly by rain, wind, and wildlife. Lumber. At the time, the only known cure or remedy was to cut out the blight. Blight Resistant American Chestnut Trees. Quick Guide to Chestnut Pests and Diseases but they have a good track record of eventually reducing damage to acceptable levels. In anticipation of the blight-resistant American chestnut trees, landowners are encouraged to establish “mother trees” on their properties. These beneficial species spend the winter in shriveled galls, so it’s important to leave the previous season’s galls on the tree rather than prune them out. If the United States Department of Agriculture (USDA) accepts the deregulation petition, the blight-tolerant chestnut would be the first GE tree approved for […] The American chestnut tree once dominated the landscape of the eastern U.S., from Mississippi to Maine. This disease reduced the American chestnut from its position as the dominant tree species in the eastern forest ecosystem to little more than an early-succession-stage shrub. Foresters were ordered to search forests and perform surgery on infected trees. THE FUNGUS OF THE CHESTNUT-TREE BLIGHT, W. G. Farlow, Science 10 May 1912 35: 717-722; Three American tragedies: chestnut blight, butternut canker, and Dutch elm disease; Nutgrafting for American Chestnut Restoration; Utilization of Chestnut. Chestnut heartwood is legendary for its rot resistance. Chestnut tree with blight. There has been essentially no chestnut lumber sold in the U.S. for decades, and the bulk of the annual 20-million-pound nut crop now comes from introduced chestnut species or imported nuts. University researchers are seeking approval to restore the iconic chestnut to American forests by using a genetically engineered (GE) variety that can tolerate the blight that has killed billions of wild trees. The American chestnut tree population from Maine to Alabama was wiped out in just fifty years. Chestnut trees typically produce pollen before they are mature enough to produce chestnuts.
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