David Owens, Extension Entomologist, owensd@udel.edu Tree Fruit As mentioned previously, we did not have any San Jose scale traps out this year. However, if we assume that adult male flight occurred around April 15, then we will have accumulated 600… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu San Jose Scale A few weeks ago, I discussed San Jose Scale crawler timing. Although we did not have pheromone traps out this year, we can estimate based on previous years and relative apple phenology… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Plum Curculio Plum curculio has been active. If you have had problems with them in the past, consider scouting for them and treating for them at peach shuck split. Branches can be jarred and jostled… Continue Reading
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
