Blueberries:
Blueberry Maggot (BBM): No blueberry maggot adults were found last week. However, the first fly was caught on Tuesday July 6 in Hammonton. [Read more…]
Rutgers Cooperative Extension
Seasonal updates on diseases, insects, weeds impacting small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
Subscription is through the general Fruit feed available via EMAIL and RSS.
Blueberries:
Blueberry Maggot (BBM): No blueberry maggot adults were found last week. However, the first fly was caught on Tuesday July 6 in Hammonton. [Read more…]
The COVID-19 pandemic highlighted the critical and essential role of farm labor in getting food from farm to plate. However, health concerns should not stop with a negative COVID test or vaccine, especially if an employee or family member is exhibiting any of the ‘flu-like’ symptoms that are associated with corona virus.
From the Vermont Law School Center for Agriculture and Food Systems (CAFS) – “The CAFS launched the Food System Worker Law and Policy Project in 2021 with research focused on farmworkers, who—despite forming the backbone of a trillion-dollar industry in the U.S.—face a level of occupational risk unrivaled by most workers. From repeated exposure to pesticides and extreme heat, …. ” Their newly published “report titled “Essentially Unprotected: A Focus on Farmworker Health Laws and Policies Addressing Pesticide Exposure and Heat-Related illness,” … May 2021, provides an overview of the findings as well as policy recommendations that are urgently needed to protect farmworkers.”
Typically not seen until July, we’ve already had 3 heat waves beginning in May that expose workers to a number of potential health risks that may present very similar symptoms and can be equally health, and even life, threatening. Published studies from the Rutgers Institute of Earth, Ocean, and Atmospheric Sciences suggest growing numbers of people worldwide are at risk of heat stress and related complications, including farmers and ag laborers working in high heat and humid conditions. Last year, OSHA-NIOSH released a Heat Index App (in English and Spanish at the Apple App Store or Google Play) featuring:
For more information about safety while working in the heat, see OSHA’s heat illness webpage, including online guidance about using the heat index to protect workers.
In addition to heat stress, harvesting and other activities along field edges, including going into the woods instead of using a portable bathroom facilities, create a high risk for tick bites which can also carry a number of diseases, many as or more debilitating than Lyme disease. It is critical for your employees’ health and well-being to get proper diagnosis and treatment for all of these ailments. This table illustrates how many tick-born diseases, as well as heat stress, all have potential symptoms very similar to those of COVID-19. Each is linked to additional resources at the CDC. In many cases, it may be the ‘other symptoms’ that may be unique to each disease and assist a medical practitioner with correct identification and lead to better verification with further testing.
Disease > Symptoms v |
COVID-19 | Heat Stress | Lyme Disease | Ehrlichiosis | Babe- biosis | Powas-san | Rocky Mtn Spotted Fever |
Vector* | Human | Black-legged Tick (a.k.a. Deer Tick) (I. scapularis) | Lone Star Tick (A. americanum) & Black-legged | Black-legged Tick | Ground hog(I. cookei), Squirrel (I. marxi) & Black-legged Ticks | American Dog Tick (D. variabilis) | |
Fever or chills | X | X | X | X | X | X | X |
Cough | X | X | |||||
Shortness of breath/difficulty breathing | X | ||||||
Fatigue | X | X | X | X | |||
Muscle/body aches | X | X | X | X | X | X | |
Headache | X | X | X | X | X | X | X |
New loss of taste or smell | X | ||||||
Sore throat | X | ||||||
Congestion or runny nose | X | ||||||
Nausea/vomiting | X | X | X | X | X | X | X |
Diarrhea | X | X | |||||
Rash | X | X | X | ||||
Other symptoms | X | X | X | X | X | X | |
Potentially Deadly/Disabling |
X | X | X | X | X | X | X |
*NOTE – main vector listed, but many tick born diseases may be vectored by other species of ticks, or different species causing same disease may be carried by different tick species.
Recently, New Jersey tree fruit growers have expressed concerns regarding the use of glufosinate for weed control in apple and peach orchards.
Glufosinate is a nonselective post-emergence foliar herbicide that can be used for directed applications around trees, vines, and berries. Glufosinate provides control of many annual broadleaf and grass weeds; however, control of large or well-tillered annual grasses, such as yellow or giant foxtail can be marginal. Glufosinate has no soil activity.
Work conducted by Dr. Brad Majek a few years ago indicated that direct application of glufosinate to the mature brown bark of the lower trunk may cause severe injury by killing the cambium layer at the point of contact (https://plant-pest-advisory.rutgers.edu/glufosinate-products-sold-as-rely-280-expand-as-generic-products-enter-the-market/). However, this type of injury is not systematically associated with glufosinate application as we observed it in a trial conducted in 2017 at the Snyder Research Farm on mature “Pink Lady” apple trees which were not damaged following glufosinate application (Rely 280 at 64 fl oz/A). Additionally, injury in the form of vertical cracks in the of trunk bark have also be observed on apple trees exposed to glyphosate (https://nyshs.org/wp-content/uploads/2016/10/Pages-23-28-from-NYFQ-Winter-12-12-2013.cmc_.pdf), not only to glufosinate.
As highlighted by Dr. Dave Rosenberg (retired Plant Pathologist at Cornell’s Hudson Valley Lab) on his blog (https://blogs.cornell.edu/plantpathhvl/2014/06/30/apple-summer-diseases-herbicide-problems-and-irrigation/), “NEITHER glyphosate nor glufosinate cause trunk injury to apple trees EVERY time that they are used or in every orchard in which they are applied”. Field reports suggest that injury is detected when trees are exposed to specific conditions that still need to be precisely defined. Dr. Rosenberg’s opinion is that “the potential for damage is significantly higher if tree trunks are hit with either of these herbicides during or just prior to periods of drought stress”. Under these drought conditions, “the additional desiccation from herbicide exposure may predispose the trunks to invasion by Botryosphaeria dothidea, a canker pathogen that is incapable of killing the cambium in healthy functioning trees, but which becomes very pathogenic in drought-stressed trees”. Dr. Rosenberg also suspects that similar injury can be observed on young trees following application of paraquat. Other stress factors, such as cold injury or previous bark damages, may also increase the risk of herbicide injury.
So, to safely apply glyphosate or glufosinate in peaches or apples, it is important following some guidelines that will help minimizing glyphosate or glufosinate damages to the bark:
Peach:
Oriental Fruit Moth: Growers who have used mating disruption for OFM should continue to focus on PC; GPA; and catfacing insect pests as described below. For those growers using insecticides, the first of 2 applications in northern counties is due this week, and the second of 2 applications in southern counties is due next week. This is particularly important where the moth flight is exceeding the treatment threshold of 8 moths per trap. [Read more…]
Cherry:
Spotted Wing Drosophila (SWD): Cherries will need SWD protection. Effective insecticides for use on cherries include Asana, Baythroid, Cormoran, Danitol, Delegate, Entrust, Exirel, Imidan, Lambda-Cy/Warrior, Mustang Maxx, Malathion, and Verdepryn. Check the 2021Tree Fruit Production Guide for PHI’s and REI’s for U-Pick operations. rated products. [Read more…]