Rutgers Cooperative Extension
Peach:
Oriental Fruit Moth: First generation timings are updated below: According to the model, treatments should be over for the first generation flight statewide. However trap counts at several sites still show captures above the treatment threshold of 6/trap. Pest pressure is quite high on some farms in northern counties. [Read more…]
Rutgers Cooperative Extension (RCE) of Hunterdon and Morris County
Date: June 7, 2018
Location: Valley Crest Farm & Preserve
14 Allerton Road,
Lebanon, NJ 08833
Light dinner for those who RSVP by June 1, 2018 to (908) 788-1339
5:00 pm Welcome to Valley Crest Farm & Preserve
Megan Muehlbauer PhD, County Agent III, RCE of Hunterdon County
5:05 pm Dinner and Brief Presentation on the Background and Mission of Valley Crest Farm & Preserve
Ashley Reece, Executive Director of Valley Crest Farm & Preserve
5:30 pm Farm Tour – Tour will be led by Valley Crest Farmers Butch Sorge and Jake Peterson and include discussion of
top-worked apples, peaches, brambles, and Rutgers Scarlet™ strawberry plot.
Practical Weed Identification and Choice of Herbicide Control
Thierry Besancon PhD, Specialist in Weed Science, RCE
Springtime Strategies to Prevent Summer Rot Disease
Norm Lalancette PhD, Specialist in Tree Fruit Plant Pathology, RCE
Late Spring/Early Summer Insect Updates
Anne Nielsen, PhD Specialist in Tree Fruit Entomology, RCE
Strawberry Production Updates
Peter Nitzsche, County Agent II, RCE of Morris County
Mid to Late Spring Updates from the Rutgers IPM Program
Dean Polk, State Wide IPM Agent, RCE
Orchard irrigation Estimating Water Requirements
Hemant Gohil PhD, County Agent III, RCE of Gloucester County
Late Season Apple Thinning Strategies
Megan Muehlbauer PhD, County Agent II, RCE of Hunterdon County
7:15 pm WPS Updates
Patricia Hastings, Pesticide Safety Education Program Coordinator, NJAES
7:45 pm Adjourn
NJDEP PESTICIDE RECERTIFICATION CREDITS
CORE – 1Unit PP2 – 5 Units 1A – 2 Units 10 – 2 Units
Sweet Corn
The black light trap network is nearly complete at this time. To date, no corn earworm (CEW) have been captured. Increasing numbers of European corn borer (ECB) moths have been captured this past week, although numbers are still quite low. At present, the highest activity is in portions of northern Burlington and northwestern Ocean counties (see ECB map). This pest poses little threat at this time, as the earliest sweet corn plants are only just reaching suitable size to support larvae.
The highest nightly trap catches of ECB for the week ending 5/23/18 are as follows:
| Allentown 1 | Dayton 1 | New Egypt 1 |
| Centerton 1 | Jobstown 1 | |
| Croswicks 1 | Medford 1 |
Click to View | Download Report 5-22-18
We will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application.
The first late blight fungicide application is recommended once 18 DSVs accumulate from green row. Green row typically occurs around the first week in May in southern NJ. An early season application of a protectant fungicide such as mancozeb (Dithane, Manzate, Penncozeb) or Bravo (chlorothalonil) as soon as the field is accessible is suggested. Please be vigilant and keep a lookout for suspect late blight infections on young plants. No late blight has been reported in our region to date.
Remember the threshold for P-days is 300! Once 300 P-days is reached for your location, early blight fungicide applications should be initiated. Growers who are interested in using this model should choose the location above that is closest in proximity to their farming operation and should regularly check the Cornell NEWA website (http://newa.cornell.edu) where this information is compiled from. Click on Pests Forecasts from the menu, select your weather station, and click on tomato diseases, set accumulation start date, and a table of daily and total DSVs will be generated.
Disease severity values (DSVs) for early blight, septoria leaf spot, and tomato anthracnose development are determined daily based on leaf wetness (due to rainfall, dew) and air temperature.
On a daily basis DSV values can range from 0 to 4 where 0 = no chance for disease development to 4 = high chance for disease development. DSVs are accumulated during the production season.
Fungicide applications are based on an individually determined DSV threshold. The first fungicide application for the control of these three diseases is not warranted until 35 DSVs have accumulated from your transplanting date. After that, growers can base fungicide applications on different DSV thresholds.
Reports generated by Ryan Tirrell
Rutgers, The State University of New Jersey
Callisto® (mesotrione) is a systemic preemergence and postemergence herbicide. It works mainly on broadleaf weeds and sedges, and does not work well against most of grasses. When used preemergence, weeds take up the product through the soil during emergence. When used postemergence, weeds absorb the herbicide through the treated foliage and also through the soil.Plants affected by Callisto® will turn white. Injury may take several days or weeks to show.
Callisto® recently received a New Jersey 24(c) Special Local Need label for spot treatment of tough-to-control weeds in cranberry. This type of application will concentrate the herbicide on a localized area of the bog, allowing a higher use rate that can provide control of dodder, dewberry, Poison ivy, or smilax.
The addition of a crop oil concentrate (COC) type adjuvant at 1% v/v or a nonionic surfactant (NIS) type adjuvant at a rate of 0.25% v/v is recommended for improved control of emerged weeds.
|
Callisto® Herbicide /Gallon
|
Maximum Solution per Acre per Application | Solution Description |
| 0.8 teaspoon |
30 to 60 gal
|
approximates 4 oz/acre rate
|
| 1.6 teaspoons | 30 gal |
approximates 8
oz/acre rate
|
|
3 tablespoons
|
5.3 gal |
very concentrated, for woody weeds
|
There are a number of restrictions associated with this 24(c) SLN label:
The new 24(c) SLN label is available at this address http://www.cdms.net/ldat/ld56N003.pdf
Click to View | Download Report 5-18-18
We will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application.
The first late blight fungicide application is recommended once 18 DSVs accumulate from green row. Green row typically occurs around the first week in May in southern NJ. An early season application of a protectant fungicide such as mancozeb (Dithane, Manzate, Penncozeb) or Bravo (chlorothalonil) as soon as the field is accessible is suggested. Please be vigilant and keep a lookout for suspect late blight infections on young plants. No late blight has been reported in our region to date.
Remember the threshold for P-days is 300! Once 300 P-days is reached for your location, early blight fungicide applications should be initiated. Growers who are interested in using this model should choose the location above that is closest in proximity to their farming operation and should regularly check the Cornell NEWA website (http://newa.cornell.edu) where this information is compiled from. Click on Pests Forecasts from the menu, select your weather station, and click on tomato diseases, set accumulation start date, and a table of daily and total DSVs will be generated.
Disease severity values (DSVs) for early blight, septoria leaf spot, and tomato anthracnose development are determined daily based on leaf wetness (due to rainfall, dew) and air temperature.
On a daily basis DSV values can range from 0 to 4 where 0 = no chance for disease development to 4 = high chance for disease development. DSVs are accumulated during the production season.
Fungicide applications are based on an individually determined DSV threshold. The first fungicide application for the control of these three diseases is not warranted until 35 DSVs have accumulated from your transplanting date. After that, growers can base fungicide applications on different DSV thresholds.
Reports generated by Ryan Tirrell
Rutgers, The State University of New Jersey
