- Late blight has been reported on tomato in central Florida. This is the first report of Late blight in the US this growing season. To follow Late blight outbreaks in the US please sign up for alerts at the USAblight website by clicking here.
- There have been no reports of cucurbit downy mildew in the US to date. To track, monitor, and receive reports on CDM development in the US please click here. For the current understanding of what is happening with the CDM population in the US and current control recommendations please click here.
- There have been no reports of basil downy mildew in the US to date. To track and receive reports on its whereabouts in the US on the new website please click here. For current BDM control options in the greenhouse and field please click on hyperlinks.
- For the updated list of fungicides for use in the control of important diseases in the greenhouse please click here.
- Commercial growers should consider adding at-transplanting or -seeding controls for Phytophthora and Pythium root rots as we head into the spring especially if soils remain wet. For more information please click here. Organic growers can find more information on controlling important root rot pathogens in early season transplant production here!
- Transplant producers need to remember to vent their structures to reduce relative humidity buildup going into the evenings to help reduce leaf wetness during the overnight.
- With strawberry season just around the corner, please click here for information on controlling important fruit rot pathogens.
- The 2020/2021 Commercial Vegetable Production Recommendations Guide is available for free online! With many county offices running reduced hours or being closed this is the easiest way to obtain the newest recommendations.
- For a quick review on managing fungicide resistance development using tank mixes and fungicide rotations, and in FRAC group 3 and FRAC group 11 fungicides please click on hyperlinks.
- To keep up with Rutgers Extension services please click here. We are here to help!
Search Results for: basil downy mildew
March 21, 2020 Andy Wyenandt
Vegetable Disease Update – 3/21/20
September 18, 2019 Andy Wyenandt
Vegetable Disease Update – 9/17/19
- All cucurbit growers are encouraged to scout their fields on a regular basis and continue to use a downy mildew specific fungicide program. Fungicides that are specific to CDM should be included in weekly fungicide maintenance programs for cucurbit powdery mildew control. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
- Basil downy mildew has been reported in New Jersey on BDM susceptible and resistant sweet basil lines. All basil growers should continue to scout and follow a BDM specific fungicide program even when using DMR varieties. To track the progress of BDM in the US please visit here.
- Downy mildew has been reported in turnip greens. Growers who have fall leafy greens and cole crops should scout daily and be proactive and initiate a regular downy mildew specific fungicide program. Although its been relatively dry, spotty showers, cooler nights, and longer periods of dew (leaf wetness) have made conditions ideal for downy mildew development across a number of susceptible crops.
- Pepper anthracnose continues to be reported.
- The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
- For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.
August 20, 2019 Rick VanVranken
Vegetable Twilight Research Tour Tomorrow
Wes, Michelle and I invite you to our annual open house plot tour tomorrow evening at RAREC!
Wednesday, August 21, 2019, 4:00pm
Rutgers Agricultural Research & Extension Center
(meet at the shelter near the parking lot)
121 Northville Rd., Bridgeton, NJ (Upper Deerfield)
- Specialty Crop Evaluations – Albert Ayeni, PhD, Ethnic Crop Research Specialist, Rutgers University and Tom Orton, PhD, Specialist in Vegetables
- Exotic peppers (Habaneros, Superhots, Poblano types, Jalapenos, Sweet minibells and African Birdeyes)
- Tropical Spinach
- Tigernuts (Conventional vs. Organic plots)
- Roselle (Conventional vs. Organic)
- Asian Cucurbits (Trellised vs. Non-trellised)
- Elephant Ear Demo
- Sweetpotatoes for Leaf Production (Vine vs. tuber propagule)
- Fluted pumpkin (Conventional vs. Organic)
- Evaluation of Yacon as a Potential New Specialty Crop for New Jersey Farmers – Rick VanVranken, Rutgers Cooperative Extension of Atlantic County and Peter Nitzsche, Rutgers Cooperative Extension of Morris County
- Evaluation of Bell Pepper Varieties and Breeding Lines for Bacterial Leaf Spot and Phytophthora Blight Management – Wes Kline, PhD, Rutgers Cooperative Extension of Cumberland County
- Weed Control Options for Cucurbits – Thierry Besancon, PhD, Extension Weed Specialist for Specialty Crops
- Basil Downy Mildew Fungicide Control Trial – Andy Wyenandt, PhD, Specialist in Vegetable Pathology
- Cucurbit Powdery Mildew Control with Fungicides – Andy Wyenandt, PhD, Specialist in Vegetable Pathology
- Basil Downy Mildew Variety Evaluations – Andy Wyenandt, PhD, Specialist in Vegetable Pathology
- Organic and Conventional Basil Downy Mildew Control Programs Comparing New Rutgers DMR Lines and Downy Mildew Susceptible Lines. – Andy Wyenandt, PhD, Specialist in Vegetable Pathology
- Managing Phytophthora Blight in Peppers With Fungicides – Andy Wyenandt, PhD, Specialist in Vegetable Pathology
- Evaluation of Five Sweet Corn Varieties: non-Bt, Bt, and Bt+VIP for Resistance to Corn Earworm, Fall Armyworm and European Corn Borer – Joe Ingerson-Mahar, PhD, Vegetable IPM Coordinator
Pesticide credits have been requested.
August 2, 2019 Andy Wyenandt
Vegetable Disease Update – 8/2/19
- Cucurbit downy mildew was been reported on pumpkin in Warren County this week. All cucurbit growers are encouraged to scout their fields on a regular basis and to initiate a downy mildew specific fungicide program. This is the first report of CDM on pumpkin in New Jersey this growing season. Fungicides that are specific to CDM should be included in weekly fungicide maintenance programs for cucurbit powdery mildew control. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
- There have been a few reports of Southern blight (Sclerotinia rolfsii) on tomato and pepper. Southern blight is much more common in vegetable areas south of the state where summer temperatures remain hotter (above 90°F) for longer periods of time. Like white mold, caused by Sclerotinia sclerotiorum, it can survive in the soil for many years. Symptoms of Southern blight include infection at the base of the stem at the soil-line. The resulting infection will girdle the plant causing wilt and death. The fungus will produce white, cottony mycelium and very small, spherical sclerotia which are often have a tannish, brown color.
- Cercospora leaf blight has been reported in a newly planted asparagus field.
- Corn leaf rust has been reported in northern New Jersey.
- Basil downy mildew has been reported in New Jersey on BDM susceptible sweet basil lines. All basil growers are encouraged to initiate a BDM specific fungicide program even when using DMR varieties. To track the progress of BDM in the US please visit here.
- Phytophthora blight has been reported in pepper and other crops.
- Bacterial leaf spot has been widely reported in pepper plantings.
- The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
- For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.
July 17, 2019 Andy Wyenandt
Vegetable Disease Update – 7/17/19
- Cucurbit downy mildew has been reported on butternut squash in Gloucester County this week. All cucurbit growers are encouraged to scout their fields on a regular basis and to initiate a downy mildew specific fungicide program. This is the first report of CDM in butternut squash in New Jersey this growing season. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
- There have been no reports of late blight in the region to date. Phytophthora nicotianae has been reported in the region in recent weeks. Symptoms caused by P. nicotianae look similar to late blight. If you suspect late blight on potato or tomato please contact your county Extension office.
- Basil downy mildew has been reported in southern New Jersey on BDM susceptible sweet basil lines. All basil growers are encouraged to initiate a BDM specific fungicide program. To track the progress of BDM in the US please visit here.
- Black leg symptoms have been reported on potato vines. Growers should dig up a few hills with aerial black leg symptoms to see if bacteria has worked its way into developing tubers. If tubers “stink” then traditional black leg is present. If rotten tubers are present and have no smell, please contact your County agent so samples can be collected and tested.
- Bacterial leaf spot has been reported in tomato and pepper.
- Phytophthora blight has been reported in pepper and other crops.
- Angular leaf spot has been reported on cucurbit crops. Click here for a nice review of diagnosing angular leaf spot, bacterial leaf blight, downy mildew, and anthracnose in cucurbit crops from Dr. Beth Gugino, vegetable pathologist, at Penn State.
- Cucurbit powdery mildew has been reported. Apply and rotate fungicides that are specific for CPM control.
- The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
- For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.
July 8, 2019 Andy Wyenandt
Vegetable Disease Update – 7/8/19
- Cucurbit downy mildew has been reported cucumber in Salem County. All cucumber growers are encouraged to scout their fields on a regular basis and to initiate a downy mildew specific fungicide program. This is the first report of CDM in New Jersey this growing season. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
- There have been no reports of late blight in the region to date. Phytophthora nicotianae was reported on potato on the eastern shore of Virginia a few weeks ago. Symptoms caused by P. nicotianae look similar to late blight. If you suspect late blight on potato or tomato please contact your county Extension office.
- Basil downy mildew has been reported in southern New Jersey on BDM susceptible sweet basil lines. All basil growers are encouraged to initiate a BDM specific fungicide program if not already done so.
- Black leg symptoms have been reported on potato vines. Growers should dig up a few hills with aerial black leg symptoms to see if bacteria has worked its way into developing tubers. If tubers “stink” then traditional black leg is present. If rotten tubers are present and have no smell, please contact your County agent so samples can be collected and tested.
- Bacterial leaf spot has been reported in tomato and pepper.
- Phytophthora blight has been reported in pepper.
- The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
- For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.
