Tree Fruit IPM Report June 27, 2024

Peach:

Oriental Fruit Moth: A biofix point for OFM was set on 4/10 in both northern and southern counties.  All Treatments for the second generation have past.

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

Thrips: Flower Thrips have been observed feeding in highly colored ripening fruit, especially in poorly managed ground covers that contain clover or other flowering weeds. Thrips damage appears as “silvering” and usually appears on fruit close to harvest. If populations are high damage can be extensive. Presence of thrips may be scouted for using a beating tray to detect the presence of adults and nymphs in the tree. Flowering weeeds and shrubs on orchard edges may also be scouted by shaking flowers onto a beating tray or a sheet of paper. Delegate or Entrust at the highest labeled rate are the usual recommended materials for thrips in stone fruit. Lannate may be effective in some orchards but has not worked well in recent years. These materials all have short PHI’s and may be applied close to harvest when damage typically appears. Damage is different than peach and appears as a dark streak in a similar pattern as silvering. See the NJ Commercial Tree Fruit Production Guide for more information.

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.

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 17th in both northern and southern counties. Second generation timings are updated below. Rimon is not recommended for this and later generations.

Codling Moth Degree Day Timing – Second Generation
Application and Insecticide Type
County Area Biofix Rimon:

75-100DD + 14-17 days later

 

Intrepid

1150 + 1450 DD

Diamides – Altacor, Voliam mixes: (150-200 DD)

Madex

1250 DD + every 7-9 days during brood hatch (later if first spray is an IGR)

Standard Insecticides –  Delegate, Avaunt, OP’s, carbamates, pyrethroids

1250 DD + 1550 DD

 

DD 1150 1450 1250 1250 1550
Southern April 22 N/A N/A 6/26 7/7 6/29 6/29 7/11
Northern  May 1 N/A N/A 7/3 7/18 7/8 7/8 7/23

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

Pest Event or Growth Stage Approximate Date 2024 Observed Date
 Bud Swell (Redhaven/PF-17)  March 23 +/- 15 Days March 13
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 18
Pink Peach (Redhaven/PF-17) April 4 +/- 15 Days March 18
Tight Cluster Red Delicious April 9 +/- 13 Days March 30
Full Bloom Peach (Redhaven/PF-17) April 9 +/- 14 Days April 5
Pink Apple (Red Delicious) April 14 +/- 12 Days April 9
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 20
Petal Fall (Redhaven) April 22 +/- 10 Days April 15
Petal Fall (Red Delicious) April 27 +/- 13 Days  May 3
Shuck Split (Redhaven) April 30 +/- 11 Days  April 22
Pit Hardening June 15 +/- 9 Days  June 10

 

 

Tree Fruit Trap Captures – Southern Counties

STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
3/23/2024 70 0
3/30/2024 29 0 0
4/6/2024 421 0 0
4/13/2024 415 7 1
4/20/2024 900 7 0
4/27/2024 312 2 22  1
5/4/2024 137 2 8 27 1 5
5/11/2024 6 2 15 2 1 10 42
5/18/2024 5 6 11 2 6 0 12 41
5/25/2014 33 29 7 4 25 0 44 37
6/1/2024 719 12 12 1 1 0 44 57
6/8/2024 163 7 6 0 27 0 35 52 3
6/15/2024 252 4 0 0 0 31 0 4 54 4

Tree Fruit Trap Captures – Northern Counties

STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB AMBROSIA BEETLE
3/23/2024
3/30/2024
4/6/2024 0 0
4/13/2024 3.25 37.6
4/20/2024 11.75 93
4/27/2024 0 19 50
5/4/2024 1 16 19 124
5/11/2024 3 4 18 112
5/18/2024 4 2 1 2 2 2 83
5/25/2024 7 5 0 16 8 23 55
6/1/2024 16 7 0 28 7 21 37
6/8/2024 17 4 0 23 3 16 2 12