Search Results for: basil downy mildew

Basil downy mildew has been found in potted greenhouse-grown basil. All growers producing basil should scout on a regular basis. Basil downy mildew is seed-borne and can cause significant losses.

Late blight has been found in FL and CA. To track the movement of Late blight in the US please visit USAblight.

Cucurbit downy mildew has been found on yellow summer squash, acorn, cucumber, and giant pumpkin in FL and on watermelon in TX. To track to progress of cucurbit downy mildew in the US please visit the downy mildew forecasting website at NCSU.

• Quadris 2F from Syngenta, the first strobilurin (FRAC group 11) fungicide on the market, is coming off patent and a number of companies are expected to apply to manufacture and sell is under another name. Thus, in the 2015 Vegetable Recommendations Guide you will see references to Quadris (FRAC group 11) switched to azoxystrobin (FRAC group 11) much like we did with changing Bravo WeatherStik (M5) to chlorothalonil a few years ago. As more FRAC group 11 fungicides come off patent in the next few years we expect to do the same.
• Cucurbit downy mildew is presently active on acorn, butternut, yellow summer, cucumber, cantaloupe, and giant pumpkin in southern Florida. To track the progress of cucurbit downy mildew in the US please visit (http://cdm.ipmpipe.org/)
• Basil downy mildew is active in southern Florida.

Basil downy mildew remains active. The weather this time of year is ideal for downy mildew development across many crops. Growers should remain diligent going into the fall with regular scouting and preventative fungicide applications.

Cucurbit downy and powdery mildew remain active. Growers holding mature pumpkins in the field for the next few weeks should do their best to maintain the foliage for as long as possible to prevent potential sunscald injury. Late-season fungicide applications will also help keep powdery mildew off of the stems extending the pumpkin’s post-harvest longevity. Stems infected with powdery mildew will turn brown and dry out much quicker than healthier stems. Additionally, powdery mildew and downy mildew fungicide programs for all fall cucurbit crops should continue as along as harvesting continues.

There have been no new reports of Late blight this past week.  Growers with late-season tomato plantings should be diligent and scout on a regular basis. The cooler weather and prolonged dew periods are ideal conditions for Late blight development. All old plantings should be sprayed with gramoxone to burn the foliage down or mowed/disced under as soon as possible after the last harvest.

• Late blight was reported in organic tomato field in southern New Jersey on 8/14. There have been no new reports of late blight in the state this past week.
• Basil downy mildew remains active.
• Pepper anthracnose has flared up in the southern part of the state.
• Phomopsis fruit rot has been found on eggplant in Salem County.
• Conditions for downy mildew development on many crops have been ideal this past week with the cooler temperatures and dewy mornings. Downy mildew has been reported on cucumbers, basil, and crucifer crops. Remember, the fungicides recommended for controlling downy mildew are specific and need to be incorporated into weekly maintenance applications.

Vegetable IPM Report 7-30-14 – Click to View | Download | Print

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Maps for the Week
–European Corn Borer Map
–Corn Earworm Moth Blacklight Trap Map
–Corn Earworm Moth Pheromone Trap Map

Topics for the Week

• Sweet Corn
• Peppers
• Tomatoes
• BMSB
• Pumpkins and Winter Squash
• Basil

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