Symptoms usually begin to appear on random plants throughout the field as green fruit begins to mature. The bacterium (Pseudomonas corrugata) is ubiquitous to soils and develops when weather conditions (cooler nights/very hot, humid days) and cultural practices (i.e., excess heavy N use) lead to favorable conditions for disease development. Symptoms include the development of […]
Continue reading...June 8, 2024 Andy Wyenandt
Preparing for Pepper Anthracnose in 2024
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. Currently, there are no commercially-available bell or non-bell peppers with known resistance to anthracnose.
Continue reading...June 7, 2024 Andy Wyenandt
Controlling Anthracnose and Alternaria Leaf Blights in Cucurbit Crops
Anthracnose and Alternaria leaf blight can become problematic in cucurbit crops during long periods of wet, humid weather. Both can cause significant losses if not controlled properly. With the production season in full swing, now is a good time to review a few of these important diseases.
Continue reading...June 6, 2024 Andy Wyenandt
Preparing for cucurbit downy mildew in 2024
In 2004, cucurbit downy mildew re-emerged in the US with a vengeance causing significant losses in cucurbit production. In most years prior to this, concern for CDM control was minimal, since the pathogen arrived late in the growing season (in more northern regions), or the pathogen caused little damage, or never appeared. After 2004, with […]
Continue reading...June 5, 2024 Kris Holmstrom
Vegetable IPM Update 6/05/24
Sweet Corn European corn borer (ECB) moth captures are fairly steady at low levels in northern and central county light traps. Feeding has been detected in some whorl and pretassel stage plantings where scouting is occurring. Thus far, feeding has been mostly in single digit percentages, although one planting in Somerset County approached 20% plants […]
Continue reading...June 5, 2024 Dave Schmitt and Kaitlin Quinn
Tree Fruit IPM Report June 6, 2024
Peach: Bacterial Spot: Copper formulations should be used starting at petal fall to suppress bacterial spot. Generally we recommend starting at 0.5 ozs metallic copper and gradually lowering the rate as the season progresses. The rate applied will depend on the formulation. Dr. Lalancette published a chart listing common copper formulations and rates for peach […]
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