Blueberries:
Putnam Scale: As of the past week, scale crawlers have tailed off. For all practical purposes, treatments for the second generation are done.
Sharpnosed Leafhopper (SNLH): We are calling the second generation trap peak occurring over the last week to 10 days. Therefore it is time to treat this generation if you have not already done so. Use any of the sucking insect materials listed in the 2021 Commercial Blueberry Pest Control Recommendations For New Jersey. Suggested materials include Diazinon, Imidan and any neonicotinoid such as Assail, Actara and Admire. Pyrethroids are also labeled, but are slightly less effective.
Late Season Scale Crawlers and Sharpnosed Leafhopper Adults per Trap | ||||
Week Ending | Scale | SNLH AC | SNLH (BC) | |
Avg | 8/21 | — | 1.3 | — |
High | 8/21 | — | 4.0 | — |
Avg | 8/28 | 70.16 | 0.22 | 0.28 |
High | 8/28 | 181 | 3.0 | 2.0 |
Avg | 9/4 | 18.42 | 3 | 1.5 |
High | 9/4 | 64 | 18.0 | 3.0 |
Avg | 9/11 | 4.14 | 2.8 | 1.5 |
High | 9/11 | 12.0 | 14.0 | 2.0 |