- Cucurbit downy mildew has been reported on cucumber and cantaloupe in southern New Jersey. For more information on CDM control please click here.
- Blackleg has been reported on potato in New Jersey.
- There have been no reports of Late blight in potato or tomato in the region to date. To follow the progress of Late blight in the US please click here.
- Bacterial leaf spot has been reported in pepper. More more information on BLS control please click here. Rutgers is surveying tomato and pepper fields throughout the state this summer to help determine the makeup of the bacterial population and for copper resistance development.
- Powdery mildew has been reported in cucurbit crops. For more information on the control of CPM please click here.
- Southern blight has been reported on pepper.
- Bacterial canker has been reported in tomato. For more information on diagnosing important tomato diseases please click here.
- Phytophthora blight has been reported on pepper. For more information on controlling Phytophthora blight please click here.
- For information on diagnosing important pepper diseases please click here.
- The 2022/2023 Commercial Vegetable Production Recommendations Guide is available for free online or for sale in hardcopy form at many County offices.
- For a quick review on managing fungicide resistance development using tank mixes and fungicide rotations, and information on FRAC group 4, FRAC group 7, and FRAC group 3 and FRAC group 11 fungicides please click on hyperlinks.
July 8, 2023 Andy Wyenandt
Vegetable Disease Update: 07-08-23
July 8, 2023 Andy Wyenandt
Cucurbit Downy Mildew Alert – Cantaloupe – 7/8/23
Cucurbit downy mildew has been confirmed on cantaloupe in Salem County on July 7th and on cucumber in Gloucester County (7/1) and in Atlantic County (6/13) in southern New Jersey. This is the third report of CDM in the state and region this growing season. All cucumber and cantaloupe growers should scout on a daily basis and initiate a preventative fungicide program immediately. All other cucurbit plantings need to be scouted on a regular basis. CDM was last confirmed on cucumber and butternut squash in coastal South Carolina. Remember, some CDM isolates fall into Clade I which predominately infect watermelon, pumpkin, and squash, where CDM isolates in Clade II predominately infect cucumber and cantaloupe.
For more information on CDM, the clades, and CDM control please click here.
Cucurbit downy mildew sporulating on the underside of an infected cucumber leaf.
July 2, 2023 Andy Wyenandt
Cucurbit Downy Mildew Alert – Cucumber – 7/2/23
Cucurbit downy mildew has been confirmed on cucumber in Gloucester County (7/1) and in Atlantic County (6/13) in southern New Jersey. This is the second report of CDM in the state and region this growing season. All cucumber and cantaloupe growers should scout on a daily basis and initiate a preventative fungicide program immediately. All other cucurbit plantings need to be scouted on a regular basis. CDM was last confirmed on cucumber and butternut squash in coastal South Carolina. Remember, some CDM isolates fall into Clade I which predominately infect watermelon, pumpkin, and squash, where CDM isolates in Clade II predominately infect cucumber and cantaloupe.
For more information on CDM, the clades, and CDM control please click here.
Cucurbit downy mildew sporulating on the underside of an infected cucumber leaf.
June 30, 2023 Andy Wyenandt
Vegetable Disease Update: 06-30-23
- Cucurbit downy mildew has been reported on cucumber in New Jersey. For more information on CDM control please click here.
- There have been no reports of Late blight in potato or tomato in the region to date. To follow the progress of Late blight in the US please click here.
- Bacterial leaf spot has been reported in pepper. More more information on BLS control please click here. Rutgers is surveying tomato and pepper fields throughout the state this summer to help determine the makeup of the bacterial population and for copper resistance development.
- Powdery mildew has been reported in cucurbit crops. For more information on the control of CPM please click here.
- Southern blight has been reported on pepper.
- Bacterial canker has been reported in tomato. For more information on diagnosing important tomato diseases please click here.
- Phytophthora blight has been reported on pepper. For more information on controlling Phytophthora blight please click here.
- For information on diagnosing important pepper diseases please click here.
- The 2022/2023 Commercial Vegetable Production Recommendations Guide is available for free online or for sale in hardcopy form at many County offices.
- For a quick review on managing fungicide resistance development using tank mixes and fungicide rotations, and information on FRAC group 4, FRAC group 7, and FRAC group 3 and FRAC group 11 fungicides please click on hyperlinks.
June 13, 2023 Andy Wyenandt
Cucurbit Downy Mildew Alert – Cucumber – 6/13/23
Cucurbit downy mildew has been confirmed on cucumber in Atlantic County in southern New Jersey. This is the first report of CDM in the state and region this growing season. All cucumber and cantaloupe growers should scout on a daily basis and initiate a preventative fungicide program immediately. All other cucurbit plantings need to be scouted on a regular basis. CDM was last confirmed on cucumber and butternut squash in coastal South Carolina. Remember, some CDM isolates fall into Clade I which predominately infect watermelon, pumpkin, and squash, where CDM isolates in Clade II predominately infect cucumber and cantaloupe.
For more information on CDM, the clades, and CDM control please click here.
Cucurbit downy mildew sporulating on the underside of an infected cucumber leaf.
September 16, 2022 Andy Wyenandt
Cucurbit Downy Mildew Alert – 9/16/22 – Pumpkin and Butternut Squash
Cucurbit downy mildew has been confirmed on pumpkin and butternut squash in New Jersey. Cucurbit downy mildew was confirmed on summer squash in southern New Jersey a few weeks ago and cucumber earlier this season. Remember, some CDM isolates fall into Clade I which predominately infect watermelon, pumpkin, and squash, where other CDM isolates in Clade II predominately infect cucumber and cantaloupe. All cucurbit growers should scout on a regular basis and initiate a weekly CDM fungicide program.
For more information on CDM, the clades, and CDM control please click here.
Cucurbit downy mildew sporulating on the underside of an infected cucumber leaf.
