Peach:
Oriental Fruit Moth: We are still between 1st and 2nd generations at the present time. Growers that have utilized mating disruption for OFM should continue to focus on PC; GPA; and catfacing insect pests as described below.
Fruit Crops Edition - Wine Grape Section
Seasonal updates on diseases, insects, weeds impacting small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
Subscription is through the general Fruit feed available via EMAIL and RSS.
May 26, 2021 Hemant Gohil
Recordings of the 2021 Spring Wine Grape Twilight meeting
Please use the below links to listen or watch the recordings from the 2021 Spring Wine Grape Twilight meeting held on May 19th.
Audio Recording link: https://go.rutgers.edu/6kigewvp
Video Recording link: https://go.rutgers.edu/efy1iu7h [Read more…]
Cicadas Are Here and Fruit IPM for 5/26/21
Cicadas are Here, There and Everywhere (Depending where you are): 17 year cicadas began emergence last week. These insects while a marvel in the insect world, are also capable of doing considerable damage to young fruit trees, grape vines, and blueberry bushes. After mating they begin to deposit their eggs in slits along small diameter branches. Thin branches which are loaded with fruit weight and damaged by egg laying can break. Some growers have asked about damage and what they can do to prevent it. Most egg laying is starting this week.
May 24, 2021 Hemant Gohil
Eastern Viticulture and Enology Forum – Town Hall
Grower and Wine Maker Town Hall: Questions from the Field and Cellar
Rutgers/NJAES New Jersey Center for Wine Research and Education (NJCWRE) has collaborated with the Eastern Viticulture and Enology Forum. Regional viticulture and enology specialists will present a Grower and Winemaker Town Hall virtual meeting series to give seasonal updates and answer pre-submitted and live questions from grape and wine industry stakeholders. [Read more…]
Fruit IPM for 5/18/21
Peach:
Oriental Fruit Moth: First generation timings are updated below. Growers that have utilized mating disruption for OFM can focus on PC; GPA; and catfacing insect pests as described below.
May 18, 2021 Anne Nielsen
Spotted Lanternfly Hatch
photo by Autumn Angeles
Spotted lanternfly nymphs are hatching throughout the state and first instars are present in multiple vineyards. Lanternfly overwinters in the egg stage and hatch is quite protracted, likely depending on the microhabitat where eggs are laid. In our surveys in 2019-2020, we identified a 2 year delay from the time SLF adults are first identified in the woods bordering vineyards and movement of the adults into the vineyard and laying eggs at levels that require management.
While it may seem counterintuitive, management is not needed as soon as SLF hatches. There is currently no evidence that the nymphs cause any yield loss or plant injury. However, this is an invasive species that requires management and there is no threshold for management against the nymph stage.
Best management practices against SLF nymphs in vineyards are to time management with other key insect management such as grape berry moth or Japanese beetle. This will not only save on insecticide costs but will also allow for all of the nymphs to hatch from the egg masses. See the table below on efficacy of materials targeting multiple vineyard pests.
| Trade name | Active ingredient | Class | Rate per acre | Days of activity | SLF | GBM | JB |
| Brigade 10WSB | bifenthrin | Pyrethroid | 16 oz. | 14 | E | E | |
| Actara 25WDG | thiamethoxam | Neonicotinoid | 3.5 oz | 7 | E | G | |
| Assail 30SG | acetamiprid | Neonicotinoid | 5.3 oz | <7 | G | G | F |
| Carbaryl 4L | carbaryl | Carbamate | 2 qt | 7 | E | G | G |
| Avaunt 30DG | indoxicarb | Oxadiazine | 6 oz | 7 | E | G | G |
| Danitol 2.4EC | fenpropathrin | Pyrethroid | 21.33 fl oz | 7 | E | E | E |
| Belay | clothianidin | Neonicotinoid | 6 oz. | – | G | G | G |
| Baythroid | cyfluthrin | Pyrethroid | 3.2 oz | 7 | E | E |
E = excellent control
G = good control
F = fair control
