- Cucurbit downy mildew has been confirmed on cucumber, butternut squash, and pumpkin in NJ this growing season. Recent weather has been ideal for its development. All cucurbit growers should scout their fields on a regular basis and consider adding a downy mildew specific fungicide to their weekly maintenance sprays. CDM has been reported in cantaloupe in MD this past week, and in acorn, summer squash, watermelon and butternut squash as far north as North Carolina to date.
- The 2018 FRAC Table for Cucurbit Downy and Powdery Mildew Control in the mid-Atlantic Region can be found and downloaded for FREE here.
- There have been no new reports of late blight in the region.
- Basil downy mildew is being reported. Recent weather has been ideal for its development. For more information on Rutgers newly-released DMR sweet basils Obsession, Devotion, and Thunderstruck please click here.
- Bacterial leaf spot and Phytophthora blight have been reported in pepper and cucurbit crops.
- Wind damage has been reported in eggplant, pepper, and cucurbit crops.
Search Results for: basil downy mildew
August 3, 2018 Andy Wyenandt
Vegetable Disease Update – 8/3/18
August 1, 2018 Kris Holmstrom and Joe Ingerson-Mahar
IPM Update 08/01/18
Sweet Corn
European corn borer (ECB) moth catches in black light traps have dropped to very low levels again. The second flight is likely to be very erratic, with specific locations getting low numbers of moths while other regional traps catch none. There will be no map in this edition. Second generation feeding is often obscured by fall armyworm (FAW) feeding. Once plants hit full tassel, any ECB larvae present will move downward on the stalk and re-enter the plant near the area where ears are forming. This can result in direct injury to the ear. Growers should consider an insecticide application at the full tassel stage to target ECB larvae as they migrate downward. This application can eliminate larvae that have escaped any earlier insecticide applications. [Read more…]
July 25, 2018 Kris Holmstrom and Joe Ingerson-Mahar
IPM Update 7/25/18
Sweet Corn
European corn borer (ECB) moth catches in black light traps, after showing signs of increase, have now largely subsided again. The second flight is most likely going to be spotty, with specific locations getting low numbers of moths while other regional traps catch none. There will be no map in this edition. While we expect to see some feeding signs over the next two weeks, this second generation feeding is sometimes obscured by fall armyworm (FAW) feeding. Once plants hit full tassel, any ECB larvae present will move downward on the stalk and re-enter the plant near the area where ears are forming. This can result in direct injury to the ear. Growers should consider an insecticide application at the full tassel stage to target ECB larvae as they migrate downward. This application can eliminate larvae that have escaped any earlier insecticide applications. [Read more…]
July 23, 2018 Andy Wyenandt
Vegetable Disease Update – 7/23/18
- Cucurbit downy mildew has been confirmed on cucumber in Warren County in northern NJ. This is the second report in the state this growing season. All cucumber growers should scout their fields on a regular basis and consider adding a downy mildew specific fungicide to their weekly maintenance sprays. CDM has been reported in cantaloupe in MD this past week, and in acorn, summer squash, watermelon and butternut squash as far north as North Carolina to date.
- The 2018 FRAC Table for Cucurbit Downy and Powdery Mildew Control in the mid-Atlantic Region can be found and downloaded for FREE here.
- There have been no new reports of late blight in the region.
- Cucurbit powdery mildew is being reported.
- Basil downy mildew is being reported. For more information on Rutgers newly-released DMR sweet basils Obsession, Devotion, and Thunderstruck please click here.
- Bacterial leaf spot and Phytophthora blight have been reported in pepper.
July 18, 2018 Kris Holmstrom and Joe Ingerson-Mahar
IPM Update 7/18/18
Sweet Corn
European corn borer (ECB) moth catches in black light traps are showing signs of increase now. This is an indication that the second flight is getting under way. Catches overall are still quite low however, and there will be no map in this edition. We expect to see increased feeding signs over the next two weeks, although this second generation feeding is sometimes obscured by fall armyworm (FAW) feeding. Once plants hit full tassel, any ECB larvae present will move downward on the stalk and re-enter the plant near the area where ears are forming. This can result in direct injury to the ear. Growers should consider an insecticide application at the full tassel stage to target ECB larvae as they migrate downward. This application can eliminate larvae that have escaped any earlier insecticide applications. [Read more…]
July 3, 2018 Andy Wyenandt
Vegetable Disease Update – 7/3/18
- Cucurbit downy mildew has been confirmed on cucumber in southern NJ this week. This is the first report in the state this growing season. All cucumber growers should scout their fields on a regular basis and consider adding a downy mildew specific fungicide to their weekly maintenance sprays.
- The 2018 FRAC Table for Cucurbit Downy and Powdery Mildew Control in the mid-Atlantic Region can be found and downloaded for FREE here.
- There have been no new reports of late blight in the region.
- Basil downy mildew has been reported in retail pots and in fields in southern New Jersey.
- Bacterial leaf spot and Phytophthora blight have been confirmed in pepper.
- Cercospora leaf spot was found on fenugreek this past week.
- The extremely hot, dry weather this past week should help mitigate diseases such as downy mildew. Remember, copper applications when temperatures and relative humidity are above 90 may cause phytotoxicity in some crops.
