Resources by Jon Eisenback

Title Available As Summary Date ID Author
Cost and benefit of seed treatments and Temik 15G in furrow for seedling disease and nematode control in Virginia, 2008 Nov 19, 2009 2911-1419
Root-knot Nematode in Field Corn Feb 4, 2019 444-107
Impact of Cotton Monoculture, Variety Selection, and Chemical Inputs on Disease Control, 2011 Jan 27, 2012 AREC-13
Mortality of Great Rhododendron (Rhododendron maximum) in Virginia
Since 2015, Extension specialists from Virginia Tech (VT) have visited and collected plant and soil samples from several large areas of dying great rhododendron (Rhododendron maximum) in Virginia’s mountainous regions. In 2016 VT specialists met with Virginia Department of Forestry, US Forest Service personnel, and other experts to revisit some of these sites. No consistent cause of this mortality has yet been identified. It is possible that a variety of factors are stressing the rhododendrons in these areas to a point where opportunistic pathogens or insects can successfully attack and kill them. The following information summarizes our observations and diagnostic results from four separate great rhododendron mortality sites in Virginia. This information is not equivalent to a research study, which would also include samples taken from healthy great rhododendron for comparison; however, we are confident that we have ruled out two diseases that are frequently mentioned both online and anecdotally as a cause of this mortality, specifically Phytophthora root rot and Botryosphaeria dieback.
Aug 21, 2019 SPES-151P