Rutgers Cooperative Extension
Seasonal updates on diseases, insects, weeds impacting tree fruit and small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
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Tufted Apple Budmoth (TABM)
Timings for TABM control are outlined below. This is now a minor pest, due to its increased control in recent years. TABM adults started to emerge in northern counties on 5/17. If you are a grower who did have TABM damage last year, you are advised to use the timings that follow:
| Conventional, Diamides |
Conventional, Diamides |
Intrepid, Rimon |
Bt | |
| County Area | AM | EM | EM | EM |
| Southern | About 5/31 | About 6/3 | About 6/2 | 1st 6/6-8 |
| Northern | About 2 weeks away |
Date: Thursday, June 18, 2015
Location: Integrity Propagation, Route 563, SpeedwellJust south of Chatsworth. Look for the Lee Brothers Ocean Spray sign and turn down the road right next to the sign. You will see the greenhouses about ¼ mile down the road on the right hand side.
All cranberry growers are invited to this growers twilight meeting hosted by Integrity Propagation-Abbott Lee and sponsored by Rutgers Cooperative Extension and the New Jersey Agricultural Experiment Station.Meeting Agenda
5:30 Dinner
6:00 Program begins. Topics of importance to cranberry growers in New Jersey: diseases, monitoring, management of fruit quality, weather forecasting equipment, insect control, new bed establishment, pesticide storage design, pesticide storage hazard assessment, and more.Pesticide Credits Awarded: total of 6 in 3 categories.
Green Peach Aphid:
Do Not use Actara, Assail, Belay or Admire, any generics or any combination containing them, if you have flowering weeds in your orchard. The presence of flowering weeds means that you will also have foraging bees present, and applying neonicotinoids when foraging bees are present is against the label.
Some individual farms have populations above treatment thresholds. Any registered neonicotinoid insecticide (Actara, Assail, Belay, Admire Pro (IRAC 4A), or premixes – Leverage, Voliam-Flexi) will control these populations. Admire Pro will control aphids only. Closer (IRAC 4C) acts like a neonicotinoid, so it is very effective against aphids, but is bee safe. Beleaf (IRAC 9C) will also target aphids and control tarnished plant bug. Movento (IRAC 23) will control aphids and scale insects.
Plum Curculio (PC): We are the peak of PC activity in all areas of the state. Moderate levels of injury were seen in both stone and pome fruit over the past week, even where effective insecticides were applied. If significant rains follow insecticide applications, then re-apply with effective materials after an inch or more of precipitation.
Oriental Fruit Moth (OFM): All 1st generation eggs have been laid in southern counties, and the second application is due in northern counties. If your trap counts exceed 6-8 males per trap 7 to 10 days after the second spray, then additional controls may be required.
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Oriental Fruit Moth (OFM): The flight captures really jumped this past week, especially in northern counties where some farms are seeing over 100 moths per trap. This is a reference point for 2 factors: First, OFM treatments should be ongoing during this time – see table below; and the first generation flight is usually the highest, and the most important to control. For those growers using the diamide insecticides (Altacor, Belt, Voliam mixes, and Tourismo), the timing for the second application in southern counties is now. Insecticides are required according to the degree day timings in the table below. These timings should be used for most farms. If you have high insect pressure, then additional sprays may be needed. If your trap counts exceed 6-8 males per trap 7 to 10 days after the second spray, then additional controls may be required.
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The following insect pests bear special mention for early-season scouting in cranberry bogs.
Click images to enlarge.
Blackheaded fireworm eggs overwinter on the bed and usually hatch by around mid-May. It is important to catch the first generation, if possible, because the second generation occurs during bloom and is typically much more destructive. Blackheaded fireworm larvae can be detected by sweep net sampling and it is good idea to look along the edges of bed where vines first begin to grow.
Blackheaded fireworm Larva Photo:D.Schiffhauer
Blackheaded fireworm Adult Photo:D.Schiffhauer
Blackheaded fireworm is much easier to control if detected during the early part of the season.
Thrips including western flower thrips: Thrips are being found in southern peach and nectarine blocks. This is common in years when we have warm dry weather during and shortly after bloom. Delegate is the best material to use, followed by Lannate. Entrust can also be used but will be more expensive. Both Delegate and Lannate will control OFM, but neither does a good job on PC. Closer is labeled for thrips suppression, but it’s use is discouraged if high thrips populations are present.
Oriental Fruit Moth (OFM): As of 5/7 we have accumulated 229 DD in southern counties. In northern counties the biofix was set for 4/28. We have had 140 DD accumulate since then. The first of two applications for OFM should be going on now in southern counties, and about 5/10-12 in northern counties (using Snyder Farm as our degree day point).
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