David Owens, Extension Entomologist, owensd@udel.edu
Congratulations to Bob Leiby and Maddle Henrickson for correctly identifying last week’s issue as phytotoxicity from a spray. EC formulations, particularly when tank mixed with chlorothalonil or copper, are notorious for causing phyto especially when applied during the heat of a bright sunny day. Note that there is no halo around the spots and spots appeared quite suddenly (and in this case, to only 1 row that was treated).
