Winegrape rootstocks deal with drought (US)

For more than a century, grapegrowers have chosen rootstocks to fight phylloxera. More recently, viruses, nematodes, limited lifetimes, productivity and soils have been major concerns, but now it’s becoming clear that water usage will be increasingly important. Wines & Vines reports in many areas where grapes grow well, it’s only because they’ve been irrigated—and in some cases are protected from drought by spraying.