The life history of Panonychus ulmi (Koch) was studied on Concord grapes in Erie County, PA, in 1977. Overwintering eggs began hatching in early May. Adults of this spring generation appeared by late May with eggs of the 1st summer generation appearing soon thereafter. Five complete ...
Despite North East being Pa. Wine Country, it was actually a latecomer to planting grapes. The first places in Erie County known for grapes were Girard and Springfield. The first commercial vineyard was in Mooreheadville in 1843. Credit for North East's grape growing is given to William Griff...