It finally feels like summer in New Jersey. Rain, humidity, and warmer temperatures, especially at night, mean that warm-season weeds are growing quickly. Of particular concern are summer annuals like crabgrass, goosegrass, and spurges. Yellow nutsedge… Read More »
Continue reading...July 6, 2023 Andy Wyenandt
Controlling basil downy mildew in the field in 2023
For over a decade, basil downy mildew (BDM) has caused significant losses in basil grown in organic and conventional field and greenhouse production across the United States. At the time of its introduction, there were very few fungicides labeled for its control making it nearly impossible to grow a successful crop in many areas of […]
Continue reading...July 5, 2023 Kris Holmstrom
Vegetable IPM Update 7/05/23
Sweet Corn European corn borer (ECB) moth activity is extremely low in areas where blacklight traps are operating in the northern and central counties. Feeding in whorl and pre-tassel stage corn has increased slightly over the past week, but only in a few areas. Many plantings exhibiting no ECB injury at all. While ECB […]
Continue reading...July 5, 2023 Andy Wyenandt
Phytophthora and Pythium control during wet weather
Most of New Jersey has finally gotten some significant rain after many weeks of dry weather making current conditions ideal for pathogens such as Phytophthora and Pythium. Unfortunately, Pythium cottony leak and Phytophthora blight can be found on most farms in the southern part of the state. Poor crop rotations with susceptible hosts only make […]
Continue reading...July 4, 2023 Andy Wyenandt
Cucurbit powdery mildew control in 2023
Cucurbit powdery mildew (CPM), caused by Podosphaera xanthii, is one the most important diseases of cucurbit crops throughout the world. The pathogen is an obligate parasite, just like cucurbit downy mildew, meaning it needs a living host in order to survive. In northern regions that have a killing frost in the fall the pathogen will […]
Continue reading...July 4, 2023 Andy Wyenandt
Quick reviews of fungicide chemistries, FRAC groups, and fungicide resistance management
Did you know that first EBDC fungicide was registered for use in vegetable crops in 1964 followed by chlorothalonil in 1966. Historically speaking, the first New Jersey Vegetable Production Recommendations Guide was produced in 1969 and was only 33 pages long (it’s 450 pages now). Things have changed significantly over the past 54 years when […]
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