Source: NCSU COOPERATIVE EXTENSION, 4/27/20


Attention Turns to the Codling Moth

With petal fall sprays complete, the next several weeks will be focused predominately on codling moth. Biofix varied widely between the piedmont and mountain regions this year, ranging from April 1 in Lincoln County to as recent as April 20 in Henderson County. Based on these dates, codling moth degree day accumulations range from approximately 275 (Lincoln County at 850 ft) to only about 70 (Henderson County at 2100 ft). The codling moth DD model recommends initial sprays for the first generation at 250 DD under moderate to high pressure. Under low pressure, initial applications can be delayed until about 350 DD. Based on current DD accumulations, sprays targeting the first generation should be made now in the piedmont region. In higher elevations, 250 DD is not expected for at least another 10 days.

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