San Jose Scale ready to emerge and aphids in blueberries. View the full update for 6-7-2016.
Fruit Crops Edition
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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Fruit IPM for 5-24-2016
Plum curculio main insect pest in both peaches and blueberries this week. View the full update for 5-24-2016.
New Fungicide for Peach Disease Control
The fungicide Luna Sensation has been registered for use on peach. This fungicide was previously registered on apple and cherry in 2012. Due to its recent release this spring for peach disease control, Luna Sensation was not included in the latest 2016 publication of the New Jersey Commercial Tree Fruit Production Guide. Thus, below is a discussion of its attributes and suggested usage for disease control on peach. [Read more…]
Fruit IPM for 5-10-2016
Peach
Oriental Fruit Moth: Oriental fruit moth is the primary key insect in peaches that is the ‘worm in the fruit’. It has 4 generations in NJ. During the first 2 flights, eggs are laid primarily on leaf petioles and growing shoots. Larvae hatch and mine down the new growth. As the larvae feed on developing shoots, flagging is seen when the growing terminal dies and falls over. Some eggs from the second generation and much of the 3rd and 4th generation are laid on the fruit surface. When the larva hatch, they bore into the fruit, causing infested fruit. First generation timings are updated below:
OFM 1st Generation Timing | |||
Insecticide Type | |||
County/Region | Degree Days by 5/10 base 45 | Conventional 170-200, 350-375 |
Diamide 100-150, 300-350 |
Gloucester – Southern | 315 | 1st – past 2nd – 5/12-5/13 |
1st – past 2nd – 5/9-5/12 |
Hunterdon – Northern | 227 | 1st – past 2nd – 5/19-5/21 |
1st – past 2nd – 5/15-5/18 |
Plum Curculio (PC): PC adults usually begin egg laying once the fruit is out of the shuck. Preferred materials that offer PC control now are Avaunt, and Imidan. If using high rates of a neonicotinoid (i.e. Actara, Belay, Assail), be aware that there is a synergistic effect when used in tank mixes with DMI materials (i.e. Rally) with regard to bee toxicity. Neonicotinoids should not be used if there are any flowering weeds in your orchard. Those flowering weeds will attract bees, which will be killed by the insecticide. The use of most of these products when bees are present is off label and therefore not legal. If pyrethroids are being used, then high rates are advisable, since low rates often do not control PC, especially in hot weather. Where PC is a problem, growers should rotate away from pyrethroid insecticides if possible. Actara and Belay will also control PC (and GPA), but not OFM. [Read more…]
Insect Pests to Look For in Cranberry Bogs: Early Season
The following insect pests bear special mention for early-season scouting in cranberry bogs:
Blackheaded fireworm – 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 a good idea to look along the edges of beds where vines first begin to grow. Remember: blackheaded fireworm is much easier to control if detected during the early part of the season.
![Blackheaded fireworm Larva (Photo by D. Schiffhauer)](https://plant-pest-advisory.rutgers.edu/wp-content/uploads/2016/05/Blackheaded-fireworm-Larva-200x300.jpg)
Blackheaded fireworm Larva (Photo by D. Schiffhauer)
![Blackheaded fireworm Adult (Photo by D. Schiffhauer)](https://plant-pest-advisory.rutgers.edu/wp-content/uploads/2016/05/Blackheaded-fireworm-Adult--300x283.jpg)
Blackheaded fireworm Adult (Photo by D. Schiffhauer)
North Jersey Tree Fruit: May 10, 2016 On-Farm Twilight Meeting
Date: May 10, 2016 5:30pm
Location: Ken Wightman’s Farm,
1111 Mt. Kemble Ave,
Morristown, NJ
Fruit growers and industry are invited to the North Jersey Tree Fruit Twilight Meeting on May 10 5:30 PM at Ken Wightman’s Farm.The program includes: Wightman Farm orchard tour, fungicide update, chemical thinning of apple, and early season pests update.
NJDEP pesticide recertification credits (CORE, PP2 and 1A) will be offered.
See you there!
Download FlyerFor more information contact Morris County Ag Agent Peter Nitzsche @ (973) 285‑8304