Peas are planted as early as ground can be worked in late February or early March in the mid-Atlantic states. Planting continues into late April to stagger the harvest. This is especially important for peas grown for processing. Peas planted later, in April, germinate and emerge quickly in the relatively warm soil, but early planted peas emerge more slowly. This exposes the new root and shoot emerging from the seed to the herbicide in the soil for a longer period of time. In addition, the new seedling’s ability to detoxify a herbicide is temperature dependent, working more slowly in cold weather. These conditions make the crop more susceptible to herbicide injury during cold weather that can reduce the stand or delay harvest. [Read more…]
Vegetable Crops Edition
Seasonal updates and alerts on insects, diseases, and weeds impacting vegetable crops. New Jersey Commercial Vegetable Production Recommendations updates between annual publication issues are included.
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NJ Commercial Vegetable Production Recommendations
Rutgers Weather Forecasting - Meteorological Information important to commercial agriculture.
Vegetable Production Recommendations and Organic Practices
Growers who chose to farm under organic conditions can find valuable information on cultural practices, variety recommendations, alternative pest management methods, and NOP approved products in the 2014 Commercial Vegetable Production Recommendations Guide.
Note that people who apply pesticides for the purpose of raising an agricultural commodity, including organic farmers, need to be licensed as a Private Pesticide Applicator. Small/Organic Farms Private Pesticide Applicator Training is being held April 9, 2014 in Mercer County.
The 2014 Commercial Vegetable Production Recommendations Guide is published annually and is now available for free download. Between publications, updates to the guide can be found here on the Plant & Pest Advisory.
Greenhouse Seed Treatment, Selected Fungicides, and Bactericides Updates

Hot Water Seed Treatment
Photo: Meg McGrath
Seed Treatment
Important diseases such as Bacterial leaf spot of tomato and pepper can cause major problems in transplant production if introduced into the greenhouse. Bacterial leaf spot of tomato and pepper can be seed-borne and infested seed can be a major source of inoculum in the greenhouse and cause problems in the field later in the growing season. As a rule for any crop, any non-certified or untreated seed should be treated, if applicable, with a Clorox treatment, or hot-water seed treatment, or dusted to help minimize bacterial or damping-off diseases. For more information on seed treatments for specific crops please see Table E-14 on page E45 in Section E of the 2014 New Jersey Commercial Vegetable Production Recommendations Guide.
Selected Organic and Conventional Fungicides, Bactericides
An updated table for selected organic and conventional fungicides and bactericides labeled for greenhouse use is available in Section E of the 2014 New Jersey Commercial Vegetable Production Recommendations Guide. The table includes a comprehensive list of fungicides and biological agents approved for greenhouse use. Table E-15 can be found on pages E46-48.
Greenhouse Sanitation Important for Disease Management
Proper greenhouse sanitation is important for healthy, disease-free vegetable transplant production.
Efforts need to be made to keep transplant production greenhouses free of unnecessary plant debris and weeds which may harbor insect pests and disease. Efforts need to be taken throughout the transplant production season to minimize potential problems.
- All equipment, benches, flats, plug trays and floors should be properly cleaned and then disinfested prior to use.
- Any weeds in or around the greenhouse structure should be removed prior to any production.
- Any transplant brought into the greenhouse from an outside source needs to be certified ‘clean’, as well as, visually inspected for potential insects and diseases once it reaches your location.
Remember, disinfestants, such as Clorox, Green-Shield, or hydrogen dioxide products (Zerotol – for commercial greenhouses, garden centers and Oxidate – commercial greenhouse and field), kill only what they come into direct contact with so thorough coverage and/or soaking is necessary. The labels do not specify time intervals for specific uses, only to state that surfaces be ‘thoroughly wetted’. Therefore, labels need to be followed precisely for different use patterns (i.e., disinfesting flats vs. floors or benches) to ensure proper dilution ratios. Hydrogen dioxide products work best when diluted with water containing little or no organic matter and in water with a neutral pH.
European Pepper Moth Update
Composite list of known host plants for European Pepper Moth (pdf)
So far as known, this moth has been found in only one New Jersey greenhouse operation. However, it has been found in several greenhouses in the Mid-Atlantic area, in 2013 and 2014, and will likely become more widespread until growers become more aware of this pest. Dr. Stanton Gill, University of Maryland, is working on this insect. [Read more…]
Small/Organic Farms Private Pesticide Applicator Training
Rutgers Cooperative Extension of Mercer County
April 9, 2014 10:00 – 3:00
$20 includes lunch and materials RSVP required by April 4th! Registration form 4/9/14
Contact: Meredith Melendez 609-989-6830 melendez@njaes.rutgers.edu
Topics covered will include:
- NJ Licensing Regulations
- The Label is the Law
- Pesticide Health and Safety
- Worker Protection Standard
- Applicator Resources
- Compliance Inspections