Rutgers Cooperative Extension
The following article has edited and reprinted with permission from the original authors: Chuck Johnson, Virginia Tech and Kathy Demchak, Penn State University
Two strawberry viruses are causing problems for strawberry growers in Eastern and Mid-west states this spring. The viruses (strawberry mottle virus, abbreviated SMoV) and strawberry mild yellow edge virus (SMYEV) have been found in Pennsylvania, Virginia and New Jersey this spring. [Read more…]
Late blight was found on heirloom tomatoes being grown hydroponically near Winchester, West Virginia on May 24th. Winchester, WV is just below the southern border of Virginia. This is the first report of Late blight in the region this year. There is no immediate threat to tomato or potato growers in New Jersey. However, this should remind everyone to do there part and scout on a regular basis! We will keep you up to date on the current situation.
Records, Compliance and Enforcement Subparts O and P
Food Safety Modernization Act proposed rule
This FDA Proposed Produce Food Safety Rule Q & A conference call, coordinated by the Produce Safety Alliance, discussed recordkeeping, compliance, and enforcement within the impending Food Safety Modernization Act produce rule.
Questions asked during this conference call were:
1. Do lot numbers need to stay the same from supplier to supplier? Currently each supplier assigns its own lot number to a box, can this still occur?
Yes, changing the lot number is OK. Each supplier will need to keep records of what they received and the information that they assigned to each box. There needs to be a way to trace product back and forth one step. [Read more…]
5-24-13 Tomato Report – Click to Download
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.
Potato Disease Forecasting Report 5-24-13 – Click to Download
Welcome to the new potato report for 2013! As always, we will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application. Remember the threshold for P-days is 300! Once 300 P-days is reached for your location early blight fungicide applications should be initiated.
by Peter V. Oudemans, Extension Specialist
and Anne DeMarsay, Post Doctoral Researcher
Vines affected by Phytophthora Root and Runner Rot will decline from the root system up. Accurate diagnosis is important and may require identification by a trained plant pathologist.
Key factors for effective management include:
- Identification of the pathogen
- Soil drainage rates
- Soil drainage uniformity
- Irrigation uniformity
- Irrigation volume
- Timing of fungicide applications
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