Above, Tommy Tamarkin back up in Barbara Knapp's
Montgomery County Champion American chesnut tree in 2007
with a hypovirus "soup" to treat blight cankers.

Outline for constructing hypovirulent C. parasitica strains for tailored biocontrol of chestnut blight on individual trees prepared by Dr. Donald L. Nuss

Protocol for treatment of Sugarloaf East Field Trees August 4, 2007

Map of Sugarloaf East Field Trees treated August 4, 2007

Mark Double's Blight Culture Photos

Scientists Visit Sugarloaf Orchards March 2008

Blight Sampling from Champion American Chestnut Treein Montgomery County, MD on January 13, 2004

2004 Hypovirus Treatment of Knapp Champion Tree