Archives for June 2024

Beat the Heat: Heat Stress Management and OSHA Awareness

A Certified Safety and Health Official (CSHO) from OSHA inspected a farm during the third week of June in Southern NJ for heat related items. With this recent inspection activity and the current legislative landscape pertaining to heat stress, the Rutgers Farm Health and Safety Working Group has increased outreach and education on this topic. Resources on heat stress prevention from Rutgers are available in many formats for farmers.

Please take some time to review the NJAES Heat Stress and Agriculture website which features resources and tools from NJAES, OSHA, and the National Weather Service on heat stress mitigation. The Rutgers Working Group will continue to add new resources as they become available. These tools may aid farmers in their proactive efforts to manage heat stress.

As you review these resources, please realize strengthening your heat stress management practices may also help in preparedness for activities conducted during an OSHA heat-related inspection:

Workers weed a potato field using hand tools.

USDA Photo by Kirsten Strough.

  • Review OSHA 300 Logs for any entries indicating heat-related illness(es),
  • Review injury and illness reports and obtain any records of emergency room visits and/or ambulance transport, even if hospitalizations did not occur,
  • Interview workers for reports of headache, dizziness, fainting, dehydration, or other symptoms that may indicate heat-related illnesses,
  • Review employer’s plan to address heat exposure, including acclimatization procedures (especially for new and returning workers), work-rest schedules, access to shade and water (with electrolytes/sports drinks when needed), and any training records associated with a heat illness prevention program,
  • Document, where possible, the heat index on the OSHA-NIOSH Heat App, using the screen save feature on a mobile phone or tablet, or keep other forms of these records,
  • Identify conditions and activities relevant to heat-related hazards. These can include, but are not limited to:
    • Potential sources of heat-related illnesses (e.g., working in direct sunlight, in a hot vehicle, or areas with hot air, near an engine, furnace, boiler or steam lines),
    • Wet Bulb Globe Temperature (WBGT) calculations and/or other temperature measurements,
    • Heat advisories, warnings or alerts,
    • The use of heavy or bulky clothing or equipment,
    • The types of activities performed by the employees and whether those activities can be categorized as moderate, heavy or very heavy work,
    • The length of time in which a worker is continuously or repeatedly performing moderate to strenuous activities,
    • Heat-related illnesses among new workers,
    • The presence of any recent vacation time or breaks in employment prior to complaints of heat-related symptoms, and
    • The availability of rest breaks, water and shade on site.

Article By: The Rutgers Farm Health and Safety Working Group: Kate Brown, Michelle Infante-Casella, Stephen Komar and William Bamka

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

Vegetable IPM Update 6/26/24

Sweet Corn

European corn borer (ECB) moths have declined in blacklight traps in the northern and central counties, and feeding is also declining as previously infested plantings enter the silk stage and are treated.   Plantings now in whorl stage are showing little feeding.

The highest nightly trap catches of ECB for the week ending 6/26/24 are as follows:

Farmingdale   1
Milltown   1
Pennington   1

 

Low level fall armyworm (FAW)  infestations have been detected in a few whorl stage plantings in central counties ranging from Princeton in Mercer County to Farmingdale in Monmouth County.  There are likely more of these infestations in central and southern NJ counties.  The appearance of very scattered clusters of infested plants points to a low number of moths arriving prior to the last weather front.  These individuals will have deposited eggs on small groups of plants, resulting in the feeding pattern we now see.  Many of these fields are below 2% plants infested.  It is possible, however, that some fields in the southern counties have higher infestation levels, so it’s important to check these short whorl plantings at least weekly.

Newly hatched FAW larvae cause holes and scratches on leaves that are similar to ECB feeding, except that they tend to be more concentrated and always lead down into the whorl  (see photo at left).  As the larvae grow, the feeding becomes more destructive, with large ragged holes and obvious droppings deposited in the whorl (see photo at right)Infected plant

We will provide updates on new FAW appearances and severity as reports come in.  FAW are resistant to synthetic pyrethroids.  Effective sprays should include IRAC grp. 5 (spinosyns) or IRAC grp. 28 (diamides).  The carbamate (IRAC grp. 1A) Lannate is also still effective.  Sufficient water should be used in the applications to allow the solution to penetrate the layer of droppings that may have formed above the caterpillar.

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IMPORTANT: EPA Issues Final Cancellation Order and Updates to Existing Stocks Provisions for Several Chlorpyrifos Products

[Tuesday June 25, 2024]. The U.S. Environmental Protection Agency (EPA) is issuing a final cancellation order for Corteva’s chlorpyrifos product “Dursban 50W in Water Soluble Packets” and three Gharda chlorpyrifos products, and an amendment to the existing stocks provisions for two Liberty and three Winfield chlorpyrifos end-use products. The Agency has also updated the frequently […]

EPA Releases Updates on Organophosphate Pesticides Dicrotophos, Dimethoate, and Tetrachlorvinphos

[Thursday 6/20/2024]. The U.S. Environmental Protection Agency (EPA) has released the Proposed Registration Review Interim Decisions (PIDs) for dicrotophos and dimethoate, as well as an Interim Registration Review Decision (ID) for tetrachlorvinphos (TCVP), three organophosphate (OP) pesticides. OPs are a group of pesticides used in agriculture (e.g. food crops) and non-agricultural sites (e.g., turf at […]

Sparganothis Fruitworm Degree-Day Update: as of June 24, 2024

Based on our degree-day model, Sparganothis fruitworm has accumulated 1038 degree-days (DD) as of June 24, using April 15 as the biofix date. This indicates that peak flight activity should have occurred at the end of last week. Historically, we recommend insecticide applications 10-14 days after peak flight. This period will fall between mid- to the end of the first week in July.