Tree Fruit IPM Report July 24, 2024

Peach:

Oriental Fruit Moth: A biofix point for OFM was set on 4/10 in both northern and southern counties.  All Treatments OFM this season have past. Monitor traps and treat for counts over 6 adult moths/trap.

Tarnished Plant Bugs; and Other Catfacing Insects: Catfacing insects remain very active. Some recent fruit feeding has been observed.

Scale Insects: Second generation san jose scale and white peach scale crawlers have begun emergence. Late season treatments include Actara (14 day PHI); Esteem (14 day PHI), Centaur (14 day PHI), Diazinon (postharvest as per label), and Venerate (2 applications 0 day PHI).

Apples and Pears:

Diseases: Now that primary scab is nearing the end, or has ended, the focus turns toward summer diseases such as fruit rots (esp. Bitter rot), and sooty blotch and fly speck. Bitter rot control has been difficult at best in recent years even where management programs have been rigorous. Research has suggested Products such as Merivon, Luna Sensation, Inspire Super, and Aprovia may be effective, and longtime reliable broad spectrum fungicides such as omega, captan and ziram should provide control. Experience has suggested that the addition of phosphorous acid products such as Prophyt or Rampart to captan sprays may improve control. Observations are that these products improve control of other summer diseases such as sooty blotch and flyspeck, and may help suppress scab infections where present. Bitter rot symptoms have been appearing for several weeks in southern counties. Symptoms continue to increase in sensitive varieties over the past week.

Scale Insects: San jose scale crawlers are emerging. Actara has a 35 Day PHI at rates effective for scale on pome fruit. Esteem has a 45 day PHI on Pome fruit. Centaur has a 14 day PHI. Diazinon has a 21 day PHI with a 96 hour reentry.

Brwon Marmorated Stink Bug: BMSB nymphs have been seen feeding in some pear blocks. Effective materials include Brigade, Mustang Max and Venerate at 2 qts.

Codling Moth (CM): The first generation codling moth timings have ended. Trap captures Continue and increased in some southern county orchards this week. A biofix was set for CM on April 17^th in both northern and southern counties. Second generation timings are updated below. Rimon is not recommended for this and later generations. Trap Captures in some southern county orchards remain above threshold. Growers with trap captures above 5 moths/trap should still use effective materials within label restrictions.

Wine Grape:

Diseases: Powdery mildew symptoms are now appearing on clusters in some southern vineyards. Downy Mildew has been on leaves seen in some vineyards.

Grape Berry Moth: Damage from second generation berry moth is higher than normal in some southern county vineyards. Growers should check their timing using the NEWA model for the next generation. The next timing for GBM using Intrepid or diamides should be this week for southern counties.

Spotted Lantern Fly: Adult Forms are now appearing and will be moving into vineyards to feed over the next few week. No treatments are needed unless significant adult presence (> 5/vine) is seen.

Phenology Table: Based on annual observations made in Gloucester County.

Tree Fruit Trap Captures – Southern Counties

Tree Fruit Trap Captures – Northern Counties