Brown Marmorated Stink Bug being found in traps with low levels of damage in the field. Starting Spotted Wing Drosophila treatments in blueberries. Grape Berry Moth treatments due by the end of the week in southern counties. View the full update for 6-21-2016.
Tree Fruit Edition
Seasonal updates on insects, diseases, weeds, maturity dates and cultural practices impacting only tree fruit.
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June 20, 2016 Dean Polk, Dave Schmitt, Atanas Atanassov, Carrie Mansue
Fruit IPM for 6-14-2016
Starting second generation of oriental fruitmoth in peaches. Starting SWD programs in blueberries. View the full update for 6-14-2016.
Fruit IPM for 6-7-2016
San Jose Scale ready to emerge and aphids in blueberries. View the full update for 6-7-2016.
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.
May 12, 2016 Norman Lalancette
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…]
