Rutgers University | New Jersey Agricultural Experiment Station | Pesticide User Responsibility

Andy Wyenandt

This is an archive of Dr. Wyenandt's posts on the Plant and Pest Advisory.

July 25, 2017

Controlling Pepper Anthracnose

Pepper Anthracnose

Pepper Anthracnose

In recent years, pepper anthracnose caused by Colletotrichum spp. has become a significant problem on some farms in southern New Jersey.

Unlike in tomato, where symptoms are only present in mature (red) fruit, pepper anthracnose can infect pepper fruit at any growth stage. [Read more…]

Filed Under: Vegetable Crops Tagged With:
July 25, 2017

Vegetable Disease Update – 7/26/17

  • Cucurbit downy mildew (CDM) on cucumber continues to be reported throughout the region. All cucumber growers should add downy mildew specific products to their regular maintenance programs. CDM has been reported cantaloupe and Butternut squash in PA.
  • Bacterial canker in tomato is being reported.
  • Pepper anthracnose has been reported in the past week.
  • 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
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
July 6, 2017

Cucurbit Downy Mildew ALERT – 7/6/17

Cucurbit downy mildew was confirmed on cucumber in northern New Jersey (Warren County) today near Allamuchy. This is the third report of CDM  on cucumber in New Jersey this growing season. All cucumber growers in NJ are encouraged to add downy mildew specific fungicides to their weekly maintenance spray programs. All growers should scout cucumber plantings as well as all other cucurbit crops for symptoms. CDM has also been reported on cucumber in MD, DE, and PA. To track the progress of cucurbit downy mildew in the US through the CDMpipe website through NCSU please click here.

Filed Under: Commercial Ag Updates, Organic Production, Vegetable Crops Tagged With:
July 6, 2017

Vegetable Disease Update – 7/6/17

  • Cucurbit downy mildew has been confirmed on cucumber in 2 counties in southern New Jersey. All cucumber growers should consider adding downy mildew specific products to their regular maintenance programs.
  • Basil downy mildew has been reported in central New Jersey.
  • Late blight has been reported in areas outside the mid-Atlantic region this past week. There have been no new reports of Late blight on tomato or potato in our region in the past week.
  • Dickeya dianthicola has been found in potato in Australia.
  • 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
July 6, 2017

Controlling important fungal diseases in Asparagus during the summer.

Asparagus growers should consider scouting their fields during the summer months for  foliar disease development. Important pathogens that growers need to scout for on a regular basis include Purple spot, Cercospora, and Rust. [Read more…]

Filed Under: Vegetable Crops Tagged With: ,