David Owens, Extension Entomologist, owensd@udel.edu San Jose Scale Alert Between May 27 and May 30, we will reach 400–450-degree days for San Jose scale crawler emergence to begin. University of California IPM program recommends waiting until 600 degree days (base… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu A photo of a young peach tree with San Jose Scale infested fruit came in last week. Fruit with scale on it will have red rings on the surface. The reddening is a reaction to… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Between April 14 and 21, we captured our first San Jose Scale in an apple orchard near Bridgeville using pheromone traps but have not captured any since. Typically, male scales emerge around petal fall, and… Continue Reading
