Archives for May 2021

Managing Heat Stress-Livestock Operations

With the increased temperatures we saw this month, being aware of potential heat stress signs and how to prevent them from happening is very important with livestock production. Luckily, in the North East, our summers are not brutally hot compared to our neighbors in the South and in the Mid-West. It is worth noting that our area can have high humidity that can cause problems for livestock. Depending on the species, and the stage of production, points on the heat index will vary for causes of heat stress.  Identify animals that may be more susceptible to heat stress, i.e. overweight animals, younger and older ones, as well as animals that are pregnant. Establishing a plan of action prior to extreme weather days will also help out.

1) Make sure there is plenty of clean water for drinking. If it is possible, add another trough so there is more access to water. This will allow all animals in your herd to have the ability to obtain water.

2) Do not work your animals on hot days.

3) Provide shade if possible and have access to air movement (wind and breezes).

4) Cool the ground- pigs love to wallow in the mud to keep cool, or you could wet some straw in a shady spot in the pasture for a herd of cattle.

5) Control flies as much as possible because this will add more stress to the animals.

6) Pay attention to the weather forecast and check the livestock weather hazard guide.

7) Know when to intervene (the heat index is 75 or greater for a 72-hour period or the daytime heat index reaches 84 or higher for two consecutive days).

Things are going to happen that are uncontrollable (the weather), but if you plan ahead, you can minimize the effects of heat stress to your livestock.

Livestock Weather Hazard Guide

It’s Hot Out There and Shade is Key to Cattle Performance | Panhandle Agriculture (ufl.edu)

Diagnosing Verticillium Wilt in Eggplant

Verticillium wilt is a common soil-borne fungal pathogen that once it has infested soil can remain for a very long time. Verticillium wilt is caused by either Verticillium albo-atrium or Verticillium dahlia and has a wide host range (over 200 plant species). Both pathogens can survive (overwinter) as microsclerotia in the soil. Verticillium wilt prefers cooler weather and drier soils and can be more severe in neutral to alkaline soils. Solanaceous weeds such as Nightshade may harbor the pathogen. [Read more…]

Preparing for Anthracnose and Alternaria Leaf Blights in Cucurbit Crops

Anthracnose and Alternaria leaf blight can become problematic in cucurbit crops during long periods of wet, humid weather. Both can cause significant losses if not controlled properly. With the production season in full swing, now is a good time to review a few of these important diseases. [Read more…]

Cicadas Are Here and Fruit IPM for 5/26/21

Cicadas are Here, There and Everywhere (Depending where you are): 17 year cicadas began emergence last week. These insects while a marvel in the insect world, are also capable of doing considerable damage to young fruit trees, grape vines, and blueberry bushes. After mating they begin to deposit their eggs in slits along small diameter branches. Thin branches which are loaded with fruit weight and damaged by egg laying can break. Some growers have asked about damage and what they can do to prevent it. Most egg laying is starting this week.

[Read more…]

Immediate potential for boxwood blight in many parts of NJ over the next 4 days

Breaking- Due to the potential for rainfall and high humidity levels, there is an immediate risk of boxwood blight infections in many parts of New Jersey. Be mindful that even though we have had very little precipitation in the state as of late, we are well within the boxwood blight growth range and prior cover-sprays may have been washed off by irrigation or the interval to reapply has come due.

Preventative spray programs should continue or be initiated for high value crops or installations.  

Boxwood Blight Risk Assessment as of 5/26/2021
Region Location CODE 26-May 27-May 28-May 29-May 30-May 31-May
Southern Upper Deerfield NJ50 Infection Risk Infection Risk Very Low  Low  Very Low  Very Low 
Central Howell / Freehold NJ10 Low Infection Risk Very Low  Low  Very Low  Very Low 
Northern High Point NJ59 Very Low  Very Low  Very Low  Very Low  Very Low  Very Low 
Please check your local boxwood blight risk here (click here and type in your area code – select closest station)

 

These advisories are general in nature and change rapidly so someone from your business should be using this risk model (CLICK HERE) daily if boxwood is important to your financial stability – In 30 seconds you can have a better idea of boxwood blight (and other pathogen) activity in your immediate area!

  • (click on the link – input area code – select closest weather station – check 7-14 prediction – click on graph / table) 

Fungicide options; 

  1. You very well may have these materials already applied as ‘cover-sprays’ – But – be mindful that protectant fungicides lose efficacy the more rain/irrigation they are subjected to, and reapplication may be warranted especially if the reapplication interval has come due.
  2. ROTATE between Fungicide Resistance Action Committee (FRAC codes) whenever possible

Format: [FRAC code]: Chemical name (Trade names)

  • [M05]: Chlorothalonil (Daconil WS)
  • [M05 + 1] Chlorothalonil + Thiophanate methyl (Spectro 90WDG)
  • [11] Trifloxystrobin + [7] Fluopyram  (Broadform)
  • [11] Trifloxystrobin + [3] Triadimefon (Armada 50WDG)
  • [M03] Mancozeb
  • [12] Fludioxonil (Medallion WDG)
  • [3] Tebuconazole (Torque)
DISCLAIMER: The label is the law, always refer to it for allowable host crops, use-restrictions, application rates, reapplication intervals, re-entry intervals (REI), and mix compatibility information. Production and pesticide information on this site are for private/commercial pesticide applicators and landscape professionals only, and are NOT for home gardener use. Provided materials represent examples and do not cover all possible control scenarios. Trade-names listed do not imply endorsement and are used as examples only. Please contact your local agent or chemical sales representative for more information or to discuss additional pest management options.

Stinger herbicide 24(c) Special Local Need label renewed until 2025 for use on Highbush Blueberries

Blueberry bushes

Mugwort in blueberries is also called wild chrysanthemum due to its scent when the leaves are crushed.

The NJDEP informed us last Friday that the 24(c) Special Local Need label for use of Stinger (clopyralid) herbicide in highbush blueberries has been renewed for the 5 years with an expiration date set on December 31, 2025.

This is a really good news for the New Jersey Blueberry Industry as Stinger is a crucial herbicide for control of troublesome perennial weed species that has consistently showed excellent crop safety when used accordingly to the label recommendations. The new updated 24(c) label can be found on the Agrian database (https://www.agrian.com/labelcenter/results.cfm)

Stinger is a PRE and POST herbicide that is strong on weeds in the composite and legume families, such as thistles, asters, dandelion, goldenrod, ragweed, horseweed, clovers, vetch and wild bean. It also controls nightshades, smartweeds, wild buckwheat and plantain.

The maximum labeled rate of Stinger per application 5.3 fluid ounces per acre (0.125 lb acid equivalent/A), and the maximum rate per year application is 10.6 fluid ounces per acre (0.25 lb acid equivalent/A). However, the rate needed varies depending on the target species:

  • 2 fl ounces per acre (0.047 lb acid equivalent/A) will control seedling annual weeds such as common ragweed and annual vetch.
  • 3 to 4 fluid ounces per acre (0.070 to 0.094 lb acid equivalent/A) are needed to control perennial clover species, horseweed, and groundsel.
  • Most other susceptible perennial weeds require the full rate of 5.3 fluid ounces per acre (0.125 lb acid equivalent/A).

Optimum results controlling deep rooted and hard to control perennial weeds, including Canada thistle, perennial asters, goldenrod species, and mugwort (wild chrysanthemum) will be obtained if the Stinger application is split.

Apply Stinger at the rate of 5.3 fluid ounces per acre after blueberry bloom in early to mid-May when the weed is emerging. Some weeds can “survive” for months on established existing foliage even though Stinger suppresses all new growth. Tank-mix with another postemergence herbicide to increase the spectrum of weeds controlled. Be sure to spray adjacent sod and tilled row middles as well as the weed free strip under the blueberries. The application of Stinger timed to match the emergence of the perennial weed in the spring coincides with the time of year when the carbohydrate food reserves in the plant are at the lowest point. Treatment at this time reduces the weed’s chance of recovery and survival.

Apply another 5.3 fluid ounces per acre of Stinger to the marked rows, or sections of rows immediately after harvest in mid-summer. No growth of the target weed may be observed at the time of the second application. Spray the second application even though no growth of the target weed is evident. The second application is essential for the elimination of the hard to kill established perennial weeds. If the second application is skipped, expect to see the weed re-emerge in late August or September. Time all applications to maintain a 30 day PHI (PreHarvest Interval).

Stinger is both a postemergence foliar absorbed herbicide and a residual herbicide. The initial twisting and curling observed after application to susceptible species is due to the foliar absorbtion. Control of established perennials is due to residual Stinger in the soil which prevents re-growth from the roots. In certain species such as mugwort, Stinger prevents re-growth but does not kill the mature leaves. The plant will survive unless another herbicide such as Gramoxone or glyphosate is used to defoliate the plant.

Deep rooted perennials

Deep rooted perennials like goldenrod will require multiple Stinger applications.

Stinger can also be used as a wipe treatments by applying a 2% solution of Stinger in water (2.5 fluid ounces per gallon). Make a maximum of two applications with the total usage of Stinger from all types of applications not to exceed 10.6 fl oz per acre or 2/3 pint (0.25 lb acid equivalent/A) per acre per annual growing season.

Do NOT apply Stinger in a hand held sprayer used to “spray until wet”. Stinger is a residual herbicide that must be applied on a rate per acre basis. When treating “patches” of perennial weeds, apply the recommended rate per acre with a calibrated sprayer. Treat ten to fifteen feet beyond the weed “patch” on all sides. Spray the sod or row middles adjacent to the weed “patch” in the row.

Do NOT apply Stinger within 5 hours of expected rainfall or irrigation.

Do NOT permit Stinger to contact desirable foliage