• Foliar diseases should be managed with Mancozeb or Ziram, plus a single-site fungicide, to maintain pressure and inoculum at low levels, protecting fruit and maintaining a healthy orchard going into the next season.  

• Pear psylla adult and egg stages are present in orchards where populations persist. 

• Options for control include Actara, Assail, and Belay (IRAC group 4A); Sivanto Prime (IRAC group 4D); Delegate (IRAC Group 5); and products containing abamectin (IRAC group 6). Other options include Movento (IRAC Group 23). The addition of 0.25-1 gal of summer oil may improve control. Avoid applying oil at high temperatures, and do not mix with captan. Be sure to read and follow the label instructions for adding penetrants to products.  

• Brown rot is appearing in ripening fruit throughout the state. Highly effective rot materials such as DMI’s (FRAC group 3) and Strobilurins (FRAC group 11) should be applied beginning 3-4 weeks prior to harvest. See the NJ Commercial Tree Fruit Production Guide for more information. 

• Bacterial spot infections occur anytime from petal fall until after harvest. To properly control fruit infection, sprays should be applied from petal fall until 15 days before harvest. Mycoshield, FireLine, and fixed-coppers have provided satisfactory disease control. Generally, we recommend gradually lowering the rate as the season progresses. The rate applied will depend on the formulation. Dr. Lalancette published a chart listing common copper formulations and rates for peach and nectarine applications. 

Oriental Fruit Moth (OFM): A biofix point for OFM was set on 4/2 for southern counties and 4/15 in northern counties. See below for timings for the third generation. Consider treatment if trap captures are above threshold (>8 moths per trap). 

Japanese Beetles: Japanese beetles have been observed feeding in orchards. Products containing imidacloprid (Admire Pro, Leverage 360) are effective and have a short preharvest interval.  

Scale: Where crawlers are present and active, treatment options include Centaur, Sivanto, and neonicotinoids (for suppression only). Movento and Esteem should have been applied a week before or at the start of crawler emergence. 

Tarnished plant bugs and other catfacing insects: Insects are active, but new fruit feeding injury has been minimal.   

Brown Marmorated Stink Bugs: Brown Marmorated Stink Bugs are present at low to moderate levels, and numbers are increasing from previous weeks in orchards statewide. Eggs are hatching, and nymphs are present. See the NJ Tree Fruit Production guide for effective materials.  

Lesser and Greater Peach Tree Borers: Male moth captures in pheromone traps decreased in number from previous weeks. Mating disruption is recommended to maintain low populations in your orchards.  

Average Trap Captures in Peach – Southern Counties  

Average Trap Captures in Peach – Northern Counties  

• Scouting was conducted last week across 105 conventional and organic blueberry fields in Burlington and Atlantic Counties. 

• Monitoring of developing fruit indicated an overall decline in pest activity, including feeding and/or oviposition by leafrollers, plum curculio, and cherry and cranberry fruitworms. 

• Aphid populations have declined substantially compared with previous weeks, likely due to recent weather conditions and the hardening of new shoot growth, which has reduced the availability of suitable feeding sites. 

• Spotted-wing drosophila trap counts decreased in Atlantic County but increased in Burlington County. In fields where harvesting is still ongoing, spotted-wing drosophila remains the primary target for insecticide applications (Table 1).  

• Blueberry maggot activity has been increasing in the last two weeks (Table 1), likely due to reduced insecticide applications in fields where traps are located and where harvest has been completed for the monitored varieties. 

Table 1. Spotted-Wing Drosophila and Blueberry Maggot traps 

• Sharp-nosed leafhopper trap counts remain low (Table 2).  

• Oriental beetle adults are actively in flight (Table 2). 

Table 2. Sharp-nosed Leafhopper and Oriental Beetle Traps 

• Scale crawler activity on average has decreased slightly from previous weeks (Table 3). Scale infestations on fruit, on average, remain low (Table 4). 

 Table 3. Scale Traps 

Table 4. Scale Infestation on Fruit 

The IPM team continues to observe anthracnose in fields where fruit has not yet been harvested. 

The IPM team is also likely observing an increase in Alternaria fruit rot due to the increased use of mechanical harvesters. For fungicide recommendations, please refer to the Rutgers Blueberry Commercial Production Guide or https://extension.rutgers.edu/sites/default/files/2026-03/bb-v42n01.pdf 

 For blueberry production and management recommendations, please reference the recently revised 2026 Commercial Blueberry Pest Control Recommendations for New Jersey. 

• Grape berry moth (GBM) second-generation larvae are protected within berries and complete their development. 

• Scout vineyards for GBM damage and determine if the number of damaged clusters from the previous generation exceeds the treatment threshold of 10%. If above threshold, consider treatment for the next generation. 
• The next timing for GBM control measures should be applied starting at 1620 DD from the biofix date of wild grape bloom. As of July 14, we are currently at 1444 DD (base 47.14°F) in Gloucester County with a biofix date of 5/19. Consult the Grape berry moth NEWA model for the most accurate forecasting for your area. See the Commercial Grape Pest Control Recommendations for New Jersey for management options.