Cornell, USDA Breed Apple Rootstocks to Protect $23 Billion Industry From Climate Shocks
Updated
Updated · The Guardian · May 13
Cornell, USDA Breed Apple Rootstocks to Protect $23 Billion Industry From Climate Shocks
2 articles · Updated · The Guardian · May 13
Cornell and USDA scientists are developing new apple rootstocks to help orchards withstand cold snaps, drought and warmer winters that are increasingly damaging US trees.
A 2015 temperature swing of as much as 65F exposed the risk: orchards emerged from dormancy during a warm spell, then suffered rootstock damage when Arctic air swept into the north-eastern US.
The Geneva Apple Rootstock Breeding Program, running since 1968, says newer rootstocks already show much less damage than the standard M9, but producing commercial varieties can take 30 years or more.
That long timeline matters for growers making 15- to 30-year orchard investments, especially as research shows warmer fall and spring temperatures are widening trees' vulnerability to false springs and later cold snaps.
Scientists are now crossing newer lines with wild apples from central Asia and testing them nationwide, even as veteran breeders warn retirements and shorter-term funding priorities could threaten the only North American commercial rootstock effort.
Beyond extreme weather, is a hidden combination of viruses and climate stress the true killer of America's apple orchards?
A 'genetic library' of wild apples faces eviction. Could its loss cripple the fight for climate-resilient orchards for decades?
The U.S. Apple Industry at a Crossroads: Climate Risks, Rootstock Advances, and a $23 Billion Challenge
Overview
The U.S. apple industry is a major economic force, producing 11.5 billion pounds of apples and generating billions in revenue. However, it now faces serious challenges from climate change, especially in northern regions where unpredictable spring frosts and hotter summers threaten crops. These climate shifts increase the risk of diseases and pests, putting growers under pressure. To adapt, the industry is developing new, disease-resistant rootstocks and varieties, aiming to protect yields and maintain quality. This urgent innovation is essential for the industry's future, as growers must quickly adopt these solutions to stay competitive and resilient.