Fruit IPM Report 8/25/2026

Scale crawler emergence is past peak and declining. White Peach scale has a third generation in September, and San Jose scale may have a third generation in October. Options at this point include Group 4A products labeled for scale, including Assail, and the bioinsecticide Venerate. Venerate has a 0-day PHI, making it useful for blocks near or at harvest. 

Lesser Peachtree Borer (LPTB) and Peachtree Borer (PTB) trap counts have been high at several farms this season throughout the state. Where mating disruption is not used, trunk sprays with pyrethroids can be applied from early to mid-September. An additional application can be made in mid to late September. Since this can be a labor-intensive practice, it would be most efficient to prioritize younger, more productive orchards. See the NJ Tree Fruit Production for effective materials and rates. 

Average Trap Captures in Peach – Southern Counties  

Average Trap Captures in Peach – Northern Counties  

As we look at postharvest management in blueberries, the focus is on sharp-nosed leafhopper, scale, black shadow, and fall weed management. Sharp-nosed leafhopper numbers remain low, but scale activity has increased in some areas. If you notice scale markings on your fruit during harvest, you may want to consider treatment to help reduce populations for next season. 

For weekly reports on blueberry pests and recommendations, read the Rutgers Blueberry Bulletin.  

Grape Berry Moth timing for the third generation is past. No further treatments should be needed, especially where harvest has begun and insecticides are being applied for Spotted lanternfly and Spotted-wing drosophila. 

Spotted Lanternfly (SLF) adults are appearing in vineyards in low numbers, mostly on vineyard edges. As we move into September, adult migration will increase, and at that point, growers should apply materials with long residual efficacy. More information on biology and control is available at Penn State.