Stink Bugs Apples and Peaches: Populations are little changed since last week, although slightly lower in most areas. Hot spots are starting to show up to 3% damage in southern county apples. Hot spots also exist in Morris and Middlesex Counties. In order to prevent damage growers need weekly BMSB effective materials, especially on the block edges that have woods borders. The most effective materials for apples include: Danitol, Declare, Endigo, Lambda-Cy, Lannate (short residual), Leverage, Mustang Maxx, Proaxis, Renounce, Tombstone, Voliam Flexi and Warrior II. [Read more…]
Fruit Crops Edition - Blueberry 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.
Fruit IPM for August 25, 2020
Fruit IPM for August 19, 2020
Peach:
Stink Bugs Apples and Peaches: BMSB populations are becoming quite high in several northern locations. These populations have the potential to do serious damage to apples where populations are high. Growers with high BMSB populations should consider weekly insecticide applications and/or supplemental border applications with BMSB effective insecticides. [Read more…]
Fruit IPM for August 12, 2020
Peach:
Stink Bugs Apples and Peaches: BMSB populations are generally low and little changed since last week. However, hatching egg masses are present statewide. Therefore populations can increase in the near future. As the peach season comes to a close, BMSB has the potential to be more of a problem in apples. [Read more…]
Fruit IPM for 8/4/2020
Grapes:
Spotted Wing Drosophila (SWD): The spotted wing drosophila is an invasive fruit fly which can infest sound ripe thin-skinned fruit. The SWD female has a saw-like ovipositor which she uses to literally saw through healthy skin and deposit her eggs, which develop into small maggots. At this time of year each generation takes slightly over 1 week to complete. Each female can lay about 300 eggs over her lifetime, and given the time of year it is, we will probably see 3-5 more generations by the time grapes are harvested. Over the past several years we have monitored SWD in vineyards during August through September. A well-known link exists between high populations of native fruit flies and the prevalence of late season sour rot in grapes. What we don’t know is how the prevalence of SWD might be able to aggravate or help increase the late season populations of native fruit flies, or if the total fruit fly complex (native and invasives) is higher because of the presence of SWD. [Read more…]
Statewide Wine Grape Twilight – II (Webex)
Please follow the the link below the program agenda, to attend the Wine Grape Twilight – II meeting, scheduled on August 5 (Wed), 6 pm – 7:30 pm. There is no registration requirement for this meeting.
Growers Questions and Discussions:
- My vineyard could be developing resistance to Downy Mildew (DM) spray. What should I do as far as the spray program?
- Can change to complete cane pruning from spur pruning, help in reducing the resistance to DM?
- Phenology based spray or weather-based spray is more effective, during the early growth?
- Does high catch-wire canopy result in poor spray penetration into the fruit zone?
- How to convert leaf petiole test results into fertilizer recommendation?
- Guidance on getting Ready for the fall pre-emergent herbicide application?
- Is there anyone in NJ that is collecting grape grower data on Spotted Lantern Fly appearance and pressure?
Fruit IPM for 7/29/20
Peach:
Stink Bugs Apples and Peaches: Brown Marmorated Stink Bug (BMSB) has been steadily increasing in isolated locations. The highest levels seen are on 2 farms in Gloucester County at 4 per trap and at 2 farms in Morris County at 16 and 18 per trap. The Morris County traps are adjacent to apples, and represent high levels of BMSB. Most, but not all of the pyrethroid and pyrethroid premixes have good activity for BMSB. See the 2020 NJ Tree Fruit Production Guide for a list of effective materials. Where growers are using OFM mating disruption in peaches, then weekly border sprays for BMSB will help. In apples a 7 day program may be needed as trap captures increase. [Read more…]