Phomopsis blight is caused by the fungal pathogen, Phomopsis vexans. It survives between seasons in the soil on infested plant debris. Although the pathogen can infect stems and older leaves, fruit infections are most prominent. Cankers that develop on stems and branches can cause the entire plant to collapse and die. Circular, grayish spots may […]
Continue reading...July 11, 2025 Maria Cramer and Amanda Quadrel
Veg IPM update 7/11/25
Greetings from the Veg IPM team! Sweet Corn Corn earworm moth captures are increasing in the southern part of the state leading to 3- or 4-day spray intervals being needed at all trapping locations south of interstate 195. When temperatures are high (>85 degrees F), shorten the spray interval by one day. Rotation is important […]
Continue reading...July 11, 2025 Andy Wyenandt
Cucurbit Downy Mildew Alert – 7/11/25 – Cucumber
Cucurbit downy mildew has been reported on cucumber in Central New Jersey. This is the first report of CDM this growing season in the state. All cucumber and cantaloupe fields need to be scouted on a daily basis and preventative fungicide programs need to be initiated. For more information on CDM and its control please […]
Continue reading...July 11, 2025 Andy Wyenandt
Preparing for cucurbit downy mildew in 2025
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...July 11, 2025 Andy Wyenandt
Controlling Phytophthora blight in cucurbit plantings in 2025
As the summer heats up in New Jersey, the control of Phytophthora blight in cucurbit plantings can be extremely difficult (even with the use of fungicides) as hot, wet weather has set in these past few weeks. Mitigating losses to Phytophthora blight in cucurbit crops begins with long crop rotations, where recommendations suggest crop rotations […]
Continue reading...July 10, 2025 Andy Wyenandt
Vegetable Disease Update – 7/10/25
Cucurbit downy mildew has been reported (7/11/25) on cucumber in central New Jersey. For more information on CDM and its control please click here. Early blight has been reported in tomato. Bacterial leaf spot (BLS) has been reported in bell and non-bell pepper. For more information on BLS please click here. Tobacco Streak Virus and […]
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