Tree Fruit IPM Report for July 19, 2022

Peach:

Oriental Fruit Moth: A biofix point for OFM was set on 4/11 in southern counties, and on 4/14 in northern counties. The third generation timings are updated below.

Japanese Beetles: Japanese beetles have emerged and have been observed in some orchards. Products containing imidacloprid (Admire Pro, etc.) are effective and have a short preharvest interval. See the Tree Fruit Production guide for more information.

Tarnished Plant Bugs; and Other Catfacing Insects: Catfacing insect activity is increasing with the arrival of hot weather and is present at moderate to high levels in some orchards.

Scale Insects: First generation San Jose Scale crawler emergence is over. The next crawler emergence will start in late mid to late July for both San Jose and White Peach scale and will last well into August. White Peach scale has a third generation in September and San Jose scale may have a third generation in October. Esteem, Centaur and Movento are all good scale materials. Esteem and Centaur should be applied at the start of crawler emergence. Movento should be applied before the start of the crawler emergence and needs to be applied with a penetrant. Observations over the years indicate that Movento may not work well as we move into late summer especially on Pome Fruit. Other options include the neonicitinoids (Assail, Belay, Actara), Closer, Sivanto and Venerate. Some may need more than one application.

Apples and Pears:

Diseases: Summer scab, rots and sooty blotch and fly speck are the main targets at this stage. Where scab is present rely primarily on protectant fungicides. Last year Captan plus a phosphorous acid like Prophyt was observed to slow scab development as well as provide good summer disease control. Bitter Rot symptoms are now appearing in susceptible varieties.

Brown Marmorated Stink Bugs: Brown Marmorated Stink bugs are present at low to moderate levels in orchards statewide. See the NJ Tree Fruit Production guide for effective materials.

Codling Moth (CM): Timings for the second generation are updated below.  A biofix was set for CM on April 25^th in southern counties, and May 6 in Northern counties (Middlesex County). Estimated timings for the second generation are updated below.

Scale Insects: For San Jose scale see the peach section above.

Grape

Grape Berry Moth: The next timing for Grape Berry Moth will be on or about 5/24 for Intrpeid or Diamides, or a few days later for other insecticides.

Japanese Beetles: Japanese beetle pressure is high compared to other years. Many insecticides are effective for JB. See the NJ Commercial Grape Production Guide for more information.

Tree  Fruit Trap Counts – Southern Counties

Tree  Fruit Trap Counts – Northern Counties