White mold, or lettuce drop, caused by Sclerotinia sclerotiorum, can cause serious losses in lettuce and other susceptible crops if left uncontrolled. Disease development is favored by wet, humid conditions (especially in high tunnels and fields) with known histories of the disease.
Continue reading...May 31, 2024 Andy Wyenandt
Bacterial leaf spot control and copper resistance in pepper and tomato
Copper resistance in bacterial leaf spot of tomato and pepper crops has been detected at a high level in New Jersey the past few summers. While not surprising, copper resistance has been known to develop for decades now. Copper applications for the control of bacterial diseases in many crops has been a mainstay for decades […]
Continue reading...May 30, 2024 Andy Wyenandt
Edema development in brassica crops
Edema is often expressed as off-color swellings or galls that appear on leaves and stems. Edema develops when epidermal cells hold excessive water due to a slowing of evapotransporation when hot, muggy days are followed by cooler, wetter weather. Edema develops because the plant takes in more water (due to a high soil moisture content) […]
Continue reading...May 29, 2024 Kris Holmstrom
Vegetable IPM Update 5/29/24
Sweet Corn European corn borer (ECB) moth captures have increased in northern and central county light traps. Numbers are low, as they have been in recent years, and no feeding has been detected on whorl and pre-tassel stage sweet corn as far south as northern Burlington County. Whorl corn is the primary target for egg […]
Continue reading...May 29, 2024 Andy Wyenandt
Controlling Phytophthora blight in cucurbit plantings
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 finally sets in. Mitigating losses to Phytophthora blight in cucurbit crops begins with long crop rotations, where recommendations suggest crop rotations longer than 5 years […]
Continue reading...May 28, 2024 Dave Schmitt and Kaitlin Quinn
Tree Fruit IPM Report May 29, 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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