Search Results for: basil downy mildew

July 25, 2018

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…]

Filed Under: Organic Production, Vegetable Crops
July 23, 2018

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.
Filed Under: Vegetable Crops
July 18, 2018

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…]

Filed Under: Organic Production, Vegetable Crops
July 3, 2018

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.
Filed Under: Vegetable Crops
June 14, 2018

Vegetable Disease Update – 6/14/18

  • Dickeya dianthicola has been confirmed on ‘Norwis’ potato in New Jersey from seed originating from Prince Edward Island. This is the first report of Dickeya on potato in NJ this growing season. All potato growers should continue to scout their fields on a regular basis. Please contact your county agent if you find suspect plants.
  • Pectobacterium spp. has been confirmed in southern NJ in ‘Dark Red Norland’ potato originating from P.E.I and in ‘Atlantic’ originating from Maine.
  • Late blight was reported on tomato being sold as transplants in a retail operation last week near northeast Philadelphia. There has been no new information to date. Growers of tomato and potato should continue with their regular fungicide maintenance programs.
  • Basil downy mildew was reported in potted basil being sold at a retail location in southern New Jersey.
  • Bacterial leaf spot has been confirmed in pepper.
Filed Under: Vegetable Crops
July 19, 2017

Vegetable Disease Update – 7/19/17

  • Cucurbit downy mildew (CDM) has been confirmed on cucumber in northern and southern New Jersey. All cucumber growers should consider adding downy mildew specific products to their regular maintenance programs. CDM has been reported cantaloupe and Butternut squash in PA.
  • Basil downy mildew has been reported in  New Jersey.
  • There have been no new reports of Late blight on tomato or potato in our region in the past week.
  • Dickeya dianthicola has been reported in 6 states and in 9 potato varieties to date including Dark Red Norland, Red Pontiac, Silverton, Yukon Gold, Kennebec, Norwis, Superior, Marcy, and Vivaldi.
  • Surveying for Dickeya dianthicola in potato fields and irrigation sources in NJ is currently on-going. If you suspect Dickeya, please contact your county agent. The best method for controlling Dickeya dianthicola in your operation is to adopt a zero-tolerance policy.
Filed Under: Commercial Ag Updates, Vegetable Crops