South Jersey Wine Grape Twilight

When: May 20 (Tue) 5:00 PM
Where: Autumn Lake Winery: 870 W Malaga Rd, Williamstown, NJ 08094

Pesticide Credits: CORE; PP2; 1A; 10

PROGRAM

Welcome and Updates
Hemant Gohil, Gloucester County Extension Agent, Rutgers NJAES
Mark Hernandez, Owner, Autumn Lake Winery

Field Observations from the Wine Grape IPM Pilot Program
Janine Spies, Statewide Fruit IPM Program Leader, Rutgers NJAES.

2025 Recommendations for Disease Management
Peter Oudemans, Extension Specialist, Small Fruit Pathology, Rutgers NJAES.

Record Keeping Update for 2025
George Hamilton, Extension Specialist in Pest Management, Rutgers NJAES.

Grape Berry Moth in the Vineyard
Anne Nielsen, Extension Specialist in Fruit Entomology, Rutgers NJAES.

Crown Gall – Early Symptoms and Management
Hemant Gohil, Extension Agent, RCE of Gloucester County.

Grape Nutrition Update. 
Gary Pavlis, Extension Agent, RCE of Atlantic County.

Pesticide recertification credits and adjourn.

Light fare will be provided. If you plan to attend, please email Joan Medany at jmedany@co.gloucester.nj.us or call 856-224-8030. For additional assistance, please get in touch with Hemant Gohil at 856-224-8029 before the meeting.

Tree Fruit IPM Report for August 25, 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 are over in all regions. Additional treatments should be made if trap captures are over 6 moths per trap.

Insecticide Type
County/Region Degree Days by  7/28 base 45 Conventional

2000-2100 2350-2450

Diamide

20252150 2375-2450

Gloucester – Southern 2437 1st –past

2nd –Past

1st –past

2nd –past

Middlesex – Northern 2394 1st –past

2nd –past

1st –past

2nd –past

Apples and Pears:

Brown Marmorated Stink Bugs: Brown Marmorated Stink bugs are present at low to moderate levels in orchards statewide, However Activity is incresing form both Native and Invasive species. BMSB nymphs have also been seen in some orchards. See the NJ Tree Fruit Production guide for effective materials. In addition to the apple materials listed in the guide, Venerate has a +++ rating for stink bugs and a 0 day PHI.

Codling Moth (CM): Timings for the second generation are updated below.  A biofix was set for CM on April 25th in southern counties, and May 6 in Northern counties (Middlesex County). Second generation treatments according to the degree day model are now over. Additional treatments should be made if trap captures are over 5 moths/trap. Some orchards have had continuing trap captures above threshold.

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Intrepid; Diamides – Altacor, Voliam mixes:

1150-1200 +

1450-1500 DD

 

Cyd-X, 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 +

1550-1600 DD

 

DD 1150-1200 1450-1500 1250 1250 1550-1600
Southern April 25 Past Past Past Past Past
Northern May 6 Past past Past Past Past

Lesser Appleworm: Some orchards in southern counties have had internal worm damage that we think is Lesser Apple Worm. This sporadic pest sometimes shows up in late summer and fall. The damage is similar to codling moth. Larvae complete their life cycle quickly and often by the time damage is seen the larvae is already gone. Typically LAW will feed in the fruit calyx and not go into the flesh, however they may also feed on fruit flesh excavating a small hole under the skin and occasionally tunneling into the fruit. Control options are the same as for codling moth.

Grape

Bunch Rots: Disease management continues to focus on downy and powdery mildew and also turns to bunch rot management. Refer to the NJ Commercial Grape Production Guide as well as the linked presentation from Dr. Nita in Virginia. Additional information can be found in this linked presentation from Dr. Bryan Hed at Penn Sate.

Grape Berry Moth: The timing for the third generation is past. In some hot summers a fourth generation may occur, however no further treatments should be needed, especially where insecticides are being applied for SLF and SWD.

Drosophilds and Sour Rot: SWD adults are being caught in and around commercial vineyards. As the sugars start to increase in early verities like Chardonnay, be aware of Spotted Wing Drosophila combined with native fruit fly species. These populations increase at this time of year and help spread sour rot. Sour rot will only be present when you also have injured fruit. Fruit splits and various insects can help cause that initial injury. It is thought that the spotted wing drosophila (SWD), because of its saw-like ovipositor, can help cause this initial injury, helping to make the fruit more attractive to native drosophilid species.  After injury the fruit serves as a food source for ethanol-producing yeasts and acetic acid producing bacteria, the causal agents of sour rot. This in turn attracts more fruit flies to lay more eggs and spread the decay. Good canopy management for air circulation is useful to reduce sour rot incidence. However, this must be combined with insecticides and antimicrobials. A treatment regime that consists of weekly applications of an insecticide (Mustang Maxx (or other pyrethroid), Malathion, Delegate/Entrust, Verdepryn).  Add Oxidate 2.0 if fruit cracking from rain or other causes is observed. Since it is important to rotate insecticide classes when treating this often, growers should use no pyrethroid or other insecticide class more that 2 times in a row. These treatments should be started before the onset of visible sour rot and fruit fly presence.

Spotted Lantern Fly: Spotted lantern fly adults are now appearing in vineyards. At this stage border treatments with effective materials should be adequate since most adults will be found on vineyard edges and populations will be low. As we move into September adult migration will increase and at that point growers should apply materials with long residual efficacy (refer to the table from Penn Sate below. *Chlorpyrifos is no longer labeled for food use.) More information on biology and control can be found from Penn State.

 

 

Tree  Fruit Trap Counts – Southern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022 2 0 0
4/16/2022 0 2 3
4/23/2022 11 0 0 28 5 0 0
4/30/2022 5 0 1 31 4 0 0
5/7/2022 5 1 3 50 4 0 0
5/14/2022 8 5 3 19 2 0 0
5/21/2022 3 5 5 20 2 7 3
5/28/2022 0 19 3 13 0 11 36
6/4/2022 0 10 3 5 1 13 49 0
6/11/2022 0 9 2 6 36 0 8 47 3
6/18/2022 0 4 1 0 62 0 3 13 1
6/25/2022 16 0 0 6 3 16 0 0 18 4
7/2/2022 24 0 0 6 3 24 0 0 18 4
7/9/2022 10 4 2 15 6 31 0 0 15 3
7/16/2022 2 0 7 1 5 12 0 0 5 7
7/23/2022 15 0 5 1 2 12 0 0 14 2
7/31/2022 16 2 5 2 4 12 1 1 11 3
8/6/2022 10 0 4 0 3 31 2 0 21 4
8/13/2022 3 1 4 1 3 37 2 0 41 7
8/20/2022 1 1 9 4 6 56 2 2 21 6

 

Tree  Fruit Trap Counts – Northern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022
4/16/2022 0 0 1
4/23/2022 0 0 2 0
4/30/2022 0 0 2.5 0
5/7/2022 0 1 4 0
5/14/2022 1 2 0 5 0.5 0 0
5/21/2022 6 8 4 27 2 5 6 5 0
5/28/2022 34 19 3 6 13 1 23 15 0
6/4/2022 17 21 4 4 11 1 27 17 0
6/11/2022 22 25 2 1 4 0 30 9 0
6/18/2022 66 20 2 2 2 5 2 27 7 0
6/25/2022 58 21 1 8 8 2 4 22 4 0
7/2/2022 55 7 1 1 14 15 2 9 4 1
7/9/2022 60 3 1 2 8 20 2 4 5 1
7/16/2022 64 1 1 3 2 19 3 1 4 3
7/23/2022 97 1 1 2 7 18 3 1 3 3
7/31/2022 46 1 2 2 13 22 4 1 2 3
8/6/2022 26 1 1 1 5 20 3 1 4 3
8/13/2022 26 1 1 2 6 29 2 2 4 3
17 3 0 3 23 28 2 4 5 3

 

Pest Event or Growth Stage Approximate Date 2022 Observed Date
 Bud Swell (Redhaven)  March 23 +/- 15 Days March 20
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 21
Pink Peach (Redhaven) April 4 +/- 15 Days March 31
Tight Cluster Red Delicious April 9 +/- 13 Days March 31
Full Bloom Peach (Redhaven) April 9 +/- 14 Days April 10
Pink Apple (Red Delicious) April 14 +/- 12 Days April 14
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 21
Petal Fall (Redhaven) April 22 +/- 10 Days April 14
Petal Fall (Red Delicious) April 27 +/- 13 Days May 3
Shuck Split (Redhaven) April 30 +/- 11 Days April 26
Pit Hardening June 15 +/- 9 Days June 10

 

Tree Fruit IPM Report for August 18, 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 are over in all regions. Additional treatments should be made if trap captures are over 6 moths per trap.

Insecticide Type
County/Region Degree Days by  7/28 base 45 Conventional

2000-2100 2350-2450

Diamide

20252150 2375-2450

Gloucester – Southern 2437 1st –past

2nd –Past

1st –past

2nd –past

Middlesex – Northern 2394 1st –past

2nd –past

1st –past

2nd –past

Scale Insects: White Peach Scale crawler emergence has ended for this generation. San Jose Scale Crawler emergence is past peak and declining. White Peach scale has a third generation in September and San Jose scale may have a third generation in October. Options at this point include: Assail, Belay (Group 4A); and the bioinsecticide Venerate. These products may provide some late season suppression where fruit damage is observed. Only Venerate has a 0 day PHI, making it useful for blocks near or at harvest.

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. Merivon and Luna Sensation are good materials to use close to harvest. thaey are very effective for summer diseases and leave little residue.

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 25th in southern counties, and May 6 in Northern counties (Middlesex County). Second generation treatments according to the degree day model are now over. Additional treatments should be made if trap captures are over 5 moths/trap. Some orchards have had continuing trap captures above threshold.

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Intrepid; Diamides – Altacor, Voliam mixes:

1150-1200 +

1450-1500 DD

 

Cyd-X, 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 +

1550-1600 DD

 

DD 1150-1200 1450-1500 1250 1250 1550-1600
Southern April 25 Past Past Past Past Past
Northern May 6 Past past Past Past Past

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

Grape

Bunch Rots: Grapes are beginning veraison in southern counties. Disease management continues to focus on downy and powdery mildew and and now also turns to bunch rot management. Refer to the NJ Commercial Grape Production Guide as well as the linked presentation from Dr. Nita in Virginia. Additional information can be found in this linked presentation from Dr. Bryan Hed at Penn Sate.

Grape Berry Moth: The timing for the third generation is past. In some hot summers a fourth generation may occur, however no further treatments should be needed, especially where insecticides are being applied for SLF.

Spotted Lantern Fly: Spotted lantern fly adults are now appearing in vineyards. At this stage border treatments with effective materials should be adequate since most adults will be found on vineyard edges and populations will be low. As we move into September adult migration will increase and at that point growers should apply materials with long residual efficacy (refer to the table from Penn Sate below.) More information on biology and control can be found from Penn State.

 

Drosophilds and Sour Rot: SWD adults are being caught in and around commercial vineyards. As the sugars start to increase in early verities like Chardonnay, be aware of Spotted Wing Drosophila combined with native fruit fly species. These populations increase at this time of year and help spread sour rot. Sour rot will only be present when you also have injured fruit. Fruit splits and various insects can help cause that initial injury. It is thought that the spotted wing drosophila (SWD), because of its saw-like ovipositor, can help cause this initial injury, helping to make the fruit more attractive to native drosophilid species.  After injury the fruit serves as a food source for ethanol-producing yeasts and acetic acid producing bacteria, the causal agents of sour rot. This in turn attracts more fruit flies to lay more eggs and spread the decay. Good canopy management for air circulation is useful to reduce sour rot incidence. However, this must be combined with insecticides and antimicrobials. A treatment regime that consists of weekly applications of an insecticide (Mustang Maxx (or other pyrethroid), Malathion, Delegate/Entrust, Verdepryn).  Add Oxidate 2.0 if fruit cracking from rain or other causes is observed. Since it is important to rotate insecticide classes when treating this often, growers should use no pyrethroid or other insecticide class more that 2 times in a row. These treatments should be started before the onset of visible sour rot and fruit fly presence.

Tree  Fruit Trap Counts – Southern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022 2 0 0
4/16/2022 0 2 3
4/23/2022 11 0 0 28 5 0 0
4/30/2022 5 0 1 31 4 0 0
5/7/2022 5 1 3 50 4 0 0
5/14/2022 8 5 3 19 2 0 0
5/21/2022 3 5 5 20 2 7 3
5/28/2022 0 19 3 13 0 11 36
6/4/2022 0 10 3 5 1 13 49 0
6/11/2022 0 9 2 6 36 0 8 47 3
6/18/2022 0 4 1 0 62 0 3 13 1
6/25/2022 16 0 0 6 3 16 0 0 18 4
7/2/2022 24 0 0 6 3 24 0 0 18 4
7/9/2022 10 4 2 15 6 31 0 0 15 3
7/16/2022 2 0 7 1 5 12 0 0 5 7
7/23/2022 15 0 5 1 2 12 0 0 14 2
7/31/2022 16 2 5 2 4 12 1 1 11 3
8/6/2022 10 0 4 0 3 31 2 0 21 4
8/13/2022 3 1 4 1 3 37 2 0 41 7

 

Tree  Fruit Trap Counts – Northern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022
4/16/2022 0 0 1
4/23/2022 0 0 2 0
4/30/2022 0 0 2.5 0
5/7/2022 0 1 4 0
5/14/2022 1 2 0 5 0.5 0 0
5/21/2022 6 8 4 27 2 5 6 5 0
5/28/2022 34 19 3 6 13 1 23 15 0
6/4/2022 17 21 4 4 11 1 27 17 0
6/11/2022 22 25 2 1 4 0 30 9 0
6/18/2022 66 20 2 2 2 5 2 27 7 0
6/25/2022 58 21 1 8 8 2 4 22 4 0
7/2/2022 55 7 1 1 14 15 2 9 4 1
7/9/2022 60 3 1 2 8 20 2 4 5 1
7/16/2022 64 1 1 3 2 19 3 1 4 3
7/23/2022 97 1 1 2 7 18 3 1 3 3
7/31/2022 46 1 2 2 13 22 4 1 2 3
8/6/2022 26 1 1 1 5 20 3 1 4 3
26 01 1 2 6 29 2 2 4 3

 

Pest Event or Growth Stage Approximate Date 2022 Observed Date
 Bud Swell (Redhaven)  March 23 +/- 15 Days March 20
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 21
Pink Peach (Redhaven) April 4 +/- 15 Days March 31
Tight Cluster Red Delicious April 9 +/- 13 Days March 31
Full Bloom Peach (Redhaven) April 9 +/- 14 Days April 10
Pink Apple (Red Delicious) April 14 +/- 12 Days April 14
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 21
Petal Fall (Redhaven) April 22 +/- 10 Days April 14
Petal Fall (Red Delicious) April 27 +/- 13 Days May 3
Shuck Split (Redhaven) April 30 +/- 11 Days April 26
Pit Hardening June 15 +/- 9 Days June 10

 

Tree Fruit IPM Report for August 8, 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 are over in all regions. Additional treatments should be made if trap captures are over 6 moths per trap.

Insecticide Type
County/Region Degree Days by  7/28 base 45 Conventional

2000-2100 2350-2450

Diamide

20252150 2375-2450

Gloucester – Southern 2437 1st –past

2nd –7/26-7/28

1st –past

2nd –7/26-7/28

Middlesex – Northern 2394 1st –past

2nd –past

1st –past

2nd –past

Scale Insects: Second generation crawler emergence has started 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 and Centaur are both good scale materials. Esteem and Centaur should be applied at the start of crawler emergence. These materials should only need one application. Other options include: Assail, Belay, Actara (Group 4A): Closer (Group 4C); Sivanto (Group 4D) and the bioinsecticide Venerate. These products may need more than one application, typically 2 applications bracketing peak crawler emergence which should occur between the first and third week of August. Only Venerate has a 0 day PHI, making it useful for blocks near or at harvest. Diazinon is also still labelled for peach and apple: for San Jose Scale, it is labeled at a rate of 1#/100 with a 21 day PHI for both peach and apple; for White Peach Scale it is labeled at a rate of 1.5-2#/100 for post-harvest application only. The label requires 14 days between applications. These products may need more than one application, typically 2 applications bracketing peak crawler emergence which should occur between the first and third week of August.

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.

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 25th in southern counties, and May 6 in Northern counties (Middlesex County). Second generation treatments according to the degree day model are now over. Additional treatments should be made if trap captures are over 5 moths/trap. Some orchards have had continuing trap captures above threshold.

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Intrepid; Diamides – Altacor, Voliam mixes:

1150-1200 +

1450-1500 DD

 

Cyd-X, 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 +

1550-1600 DD

 

DD 1150-1200 1450-1500 1250 1250 1550-1600
Southern April 25 Past Past Past Past Past
Northern May 6 Past past Past Past Past

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

Grape

Bunch Rots: Grapes are beginning veraison in southern counties. Disease management continues to focus on downy and powdery mildew and and now also turns to bunch rot management. Refer to the NJ Commercial Grape Production Guide as well as the linked presentation from Dr. Nita in Virginia. Additional information can be found in this linked presentation from Dr. Bryan Hed at Penn Sate.

Grape Berry Moth: The timing for the third generation is past. In some hot summers a fourth generation may occur, however no further treatments should be needed, especially where insecticides are being applied for SLF.

Spotted Lantern Fly: Spotted lantern fly adults are now appearing in vineyards. At this stage it is border treatments with effective materials should be adequate since most adults will be found on vineyard edges and populations will be low. As we move into September adult migration will increase and at that point growers should apply materials with long residual efficacy (refer to the table from Penn Sate below.) More information on biology and control can be found from Penn State.

 

Tree  Fruit Trap Counts – Southern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022 2 0 0
4/16/2022 0 2 3
4/23/2022 11 0 0 28 5 0 0
4/30/2022 5 0 1 31 4 0 0
5/7/2022 5 1 3 50 4 0 0
5/14/2022 8 5 3 19 2 0 0
5/21/2022 3 5 5 20 2 7 3
5/28/2022 0 19 3 13 0 11 36
6/4/2022 0 10 3 5 1 13 49 0
6/11/2022 0 9 2 6 36 0 8 47 3
6/18/2022 0 4 1 0 62 0 3 13 1
6/25/2022 16 0 0 6 3 16 0 0 18 4
7/2/2022 24 0 0 6 3 24 0 0 18 4
7/9/2022 10 4 2 15 6 31 0 0 15 3
7/16/2022 2 0 7 1 5 12 0 0 5 7
7/23/2022 15 0 5 1 2 12 0 0 14 2
7/31/2022 16 2 5 2 4 12 1 1 11 3
8/6/2022 10 0 4 0 3 31 2 0 21 4

 

Tree  Fruit Trap Counts – Northern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022
4/16/2022 0 0 1
4/23/2022 0 0 2 0
4/30/2022 0 0 2.5 0
5/7/2022 0 1 4 0
5/14/2022 1 2 0 5 0.5 0 0
5/21/2022 6 8 4 27 2 5 6 5 0
5/28/2022 34 19 3 6 13 1 23 15 0
6/4/2022 17 21 4 4 11 1 27 17 0
6/11/2022 22 25 2 1 4 0 30 9 0
6/18/2022 66 20 2 2 2 5 2 27 7 0
6/25/2022 58 21 1 8 8 2 4 22 4 0
7/2/2022 55 7 1 1 14 15 2 9 4 1
7/9/2022 60 3 1 2 8 20 2 4 5 1
7/16/2022 64 1 1 3 2 19 3 1 4 3
7/23/2022 97 1 1 2 7 18 3 1 3 3
7/31/2022 46 1 2 2 13 22 4 1 2 3
8/6/2022 26 1 1 1 5 20 3 1 4 3

 

Pest Event or Growth Stage Approximate Date 2022 Observed Date
 Bud Swell (Redhaven)  March 23 +/- 15 Days March 20
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 21
Pink Peach (Redhaven) April 4 +/- 15 Days March 31
Tight Cluster Red Delicious April 9 +/- 13 Days March 31
Full Bloom Peach (Redhaven) April 9 +/- 14 Days April 10
Pink Apple (Red Delicious) April 14 +/- 12 Days April 14
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 21
Petal Fall (Redhaven) April 22 +/- 10 Days April 14
Petal Fall (Red Delicious) April 27 +/- 13 Days May 3
Shuck Split (Redhaven) April 30 +/- 11 Days April 26
Pit Hardening June 15 +/- 9 Days June 10

 

Tree Fruit IPM Report for July 28, 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.

Insecticide Type
County/Region Degree Days by  7/28 base 45 Conventional

2000-2100 2350-2450

Diamide

20252150 2375-2450

Gloucester – Southern 2437 1st –past

2nd –7/26-7/28

1st –past

2nd –7/26-7/28

Middlesex – Northern 2394 1st –past

2nd –7/27-7/30

1st –past

2nd –7/27-7/30

Japanese Beetles: Japanese beetles have emerged and have been observed in some orchards. Products containing imidacloprid (Admire Pro, Leverage, etc.) are effective and have a short preharvest interval. Danitol is also very effective. and 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: Second generation crawler emergence has started 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 and Centaur are both good scale materials. Esteem and Centaur should be applied at the start of crawler emergence. These materials should only need one application. Other options include: Assail, Belay, Actara (Group 4A): Closer (Group 4C); Sivanto (Group 4D) and the bioinsecticide Venerate. These products may need more than one application, typically 2 applications bracketing peak crawler emergence which should occur between the first and third week of August. Only Venerate has a 0 day PHI, making it useful for blocks near or at harvest. Diazinon is also still labelled for peach and apple: for San Jose Scale, it is labeled at a rate of 1#/100 with a 21 day PHI for both peach and apple; for White Peach Scale it is labeled at a rate of 1.5-2#/100 for post-harvest application only. The label requires 14 days between applications. These products may need more than one application, typically 2 applications bracketing peak crawler emergence which should occur between the first and third week of August.

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 25th in southern counties, and May 6 in Northern counties (Middlesex County). Estimated timings for the second generation are updated below.

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Intrepid; Diamides – Altacor, Voliam mixes:

1150-1200 +

1450-1500 DD

 

Cyd-X, 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 +

1550-1600 DD

 

DD 1150-1200 1450-1500 1250 1250 1550-1600
Southern April 25 Past Past Past Past Past
Northern May 6 Past past Past Past Past

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

Grape

Bunch Rots: Grapes are beginning veraison in southern counties. Disease management continues to focus on downy and powdery mildew and and now also turns to bunch rot management. Refer to the NJ Commercial Grape Production Guide as well as the linked presentation from Dr. Nita in Virginia.

Grape Berry Moth: The next timing for Grape Berry Moth will be on or about 7/24 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

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022 2 0 0
4/16/2022 0 2 3
4/23/2022 11 0 0 28 5 0 0
4/30/2022 5 0 1 31 4 0 0
5/7/2022 5 1 3 50 4 0 0
5/14/2022 8 5 3 19 2 0 0
5/21/2022 3 5 5 20 2 7 3
5/28/2022 0 19 3 13 0 11 36
6/4/2022 0 10 3 5 1 13 49 0
6/11/2022 0 9 2 6 36 0 8 47 3
6/18/2022 0 4 1 0 62 0 3 13 1
6/25/2022 16 0 0 6 3 16 0 0 18 4
7/2/2022 24 0 0 6 3 24 0 0 18 4
7/9/2022 10 4 2 15 6 31 0 0 15 3
7/16/2022 2 0 7 1 5 12 0 0 5 7
7/23/2022 15 0 5 1 2 12 0 0 14 2

 

Tree  Fruit Trap Counts – Northern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022
4/16/2022 0 0 1
4/23/2022 0 0 2 0
4/30/2022 0 0 2.5 0
5/7/2022 0 1 4 0
5/14/2022 1 2 0 5 0.5 0 0
5/21/2022 6 8 4 27 2 5 6 5 0
5/28/2022 34 19 3 6 13 1 23 15 0
6/4/2022 17 21 4 4 11 1 27 17 0
6/11/2022 22 25 2 1 4 0 30 9 0
6/18/2022 66 20 2 2 2 5 2 27 7 0
6/25/2022 58 21 1 8 8 2 4 22 4 0
7/2/2022 55 7 1 1 14 15 2 9 4 1
7/9/2022 60 3 1 2 8 20 2 4 5 1
7/16/2022 64 1 1 3 2 19 3 1 4 3
7/23/2022 97 1 1 2 7 18 3 1 3 3

 

Pest Event or Growth Stage Approximate Date 2022 Observed Date
 Bud Swell (Redhaven)  March 23 +/- 15 Days March 20
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 21
Pink Peach (Redhaven) April 4 +/- 15 Days March 31
Tight Cluster Red Delicious April 9 +/- 13 Days March 31
Full Bloom Peach (Redhaven) April 9 +/- 14 Days April 10
Pink Apple (Red Delicious) April 14 +/- 12 Days April 14
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 21
Petal Fall (Redhaven) April 22 +/- 10 Days April 14
Petal Fall (Red Delicious) April 27 +/- 13 Days May 3
Shuck Split (Redhaven) April 30 +/- 11 Days April 26
Pit Hardening June 15 +/- 9 Days June 10

 

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.

Insecticide Type
County/Region Degree Days by  7/8 base 45 Conventional

2000-2100 2350-2450

Diamide

20252150 2375-2450

Gloucester – Southern 1772 1st –7/16-7/18

2nd –7/26-7/28

1st –7/16-7/19

2nd –7/26-7/28

Middlesex – Northern 1701 1st –7/17-7/20

2nd –7/26-7/28

1st –7/17-7/21

2nd –7/26-7/28

 

 

 

 

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 25th in southern counties, and May 6 in Northern counties (Middlesex County). Estimated timings for the second generation are updated below.

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Intrepid; Diamides – Altacor, Voliam mixes:

1150-1200 +

1450-1500 DD

 

Cyd-X, 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 +

1550-1600 DD

 

DD 1150-1200 1450-1500 1250 1250 1550-1600
Southern April 25 Past 7/15-7/17 Past Past 7/19-7/21
Northern May 6 Past 7/17-7/19 Past Past 7/21-7/23

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

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022 2 0 0
4/16/2022 0 2 3
4/23/2022 11 0 0 28 5 0 0
4/30/2022 5 0 1 31 4 0 0
5/7/2022 5 1 3 50 4 0 0
5/14/2022 8 5 3 19 2 0 0
5/21/2022 3 5 5 20 2 7 3
5/28/2022 0 19 3 13 0 11 36
6/4/2022 0 10 3 5 1 13 49 0
6/11/2022 0 9 2 6 36 0 8 47 3
6/18/2022 0 4 1 0 62 0 3 13 1
6/25/2022 16 0 0 6 3 16 0 0 18 4
7/2/2022 24 0 0 6 3 24 0 0 18 4
7/9/2022 10 4 2 15 6 31 0 0 15 3
7/16/2022 2 0 7 1 5 12 0 0 5 7

 

Tree  Fruit Trap Counts – Northern Counties

Weekending STLM TABM-A CM BMSB OFM-A DWB OFM-P TABM-P LPTB PTB
4/9/2022
4/16/2022 0 0 1
4/23/2022 0 0 2 0
4/30/2022 0 0 2.5 0
5/7/2022 0 1 4 0
5/14/2022 1 2 0 5 0.5 0 0
5/21/2022 6 8 4 27 2 5 6 5 0
5/28/2022 34 19 3 6 13 1 23 15 0
6/4/2022 17 21 4 4 11 1 27 17 0
6/11/2022 22 25 2 1 4 0 30 9 0
6/18/2022 66 20 2 2 2 5 2 27 7 0
6/25/2022 58 21 1 8 8 2 4 22 4 0
7/2/2022 55 7 1 1 14 15 2 9 4 1
7/9/2022 60 3 1 2 8 20 2 4 5 1
7/16/2022 64 1 1 3 2 19 3 1 4 3

 

Pest Event or Growth Stage Approximate Date 2022 Observed Date
 Bud Swell (Redhaven)  March 23 +/- 15 Days March 20
1/4″ Green Tip Red Delicious March 31 +/- 13 Days March 21
Pink Peach (Redhaven) April 4 +/- 15 Days March 31
Tight Cluster Red Delicious April 9 +/- 13 Days March 31
Full Bloom Peach (Redhaven) April 9 +/- 14 Days April 10
Pink Apple (Red Delicious) April 14 +/- 12 Days April 14
Full Bloom Apple (Red Delicious) April 22 +/- 11 Days April 21
Petal Fall (Redhaven) April 22 +/- 10 Days April 14
Petal Fall (Red Delicious) April 27 +/- 13 Days May 3
Shuck Split (Redhaven) April 30 +/- 11 Days April 26
Pit Hardening June 15 +/- 9 Days June 10