Collar rot (Alternaria linariae) or Alternaria stem rot (Alternaria alternata f. sp. lycopersici) of tomato are common in young tomato plants. Either can be particularly troublesome in seedlings that have been held in transplant flats for an extended period of time before transplanting in hot, humid greenhouses. Collar rot infections often start where a leaflet branch has been […]
Continue reading...July 12, 2022 Andy Wyenandt
Diagnosing leaf diseases in sweet (and field) corn in the mid-Atlantic region
Dr. Alyssa Koehler, Field Crops Pathologist from the University of Delaware, recently posted a great diagnostic guide for important fungal leaf diseases in corn. Click here for more information. If you want to follow what is going on in Delaware you can sign up for their Weekly Crop Update by clicking here.
Continue reading...July 11, 2022 Andy Wyenandt
Vegetable Disease Update: 07-11-22
White mold has been reported in tomato and Southern blight in pepper in southern new Jersey this past week. Click here for more information. Early blight is being reported in tomato. Rhizoctonia root rot has been reported in summer squash. Click here for more information. Powdery mildew has been reported in cucurbit crops. For more […]
Continue reading...July 10, 2022 Andy Wyenandt
Identifying and controlling leaf mold in high tunnel & greenhouse tomato production
Leaf mold occasionally appears in high tunnel or greenhouse tomato production in New Jersey. However, under ideal conditions the disease will develop in field-grown crops. The fungus will cause infection under prolonged periods leaf wetness and when relative humidity remains above 85%. If relative humidity is below 85% the disease will not occur. Therefore, the […]
Continue reading...July 9, 2022 Andy Wyenandt
Important resources for cucurbit disease control in 2022
The cucurbit growing season is well under way in New Jersey and the rest of the mid-Atlantic region. Below are links to useful resources for the identification and management of important cucurbit diseases. Diagnosing important diseases in cucurbit crops Cucurbit Powdery and Downy Mildew: A Tale of Two Pathogens The downy mildew forecasting website Preparing […]
Continue reading...July 8, 2022 Dave Schmitt
Tree Fruit IPM Report for July 8, 2022
Peach: Oriental Fruit Moth: A biofix point for OFM was set on 4/11 in southern counties, and on 4/14 in northern counties. The third generation timings are updated below. Insecticide Type County/Region Degree Days by 7/8 base 45 Conventional 2000-2100 2350-2450 Diamide 2025–2150 2375-2450 Gloucester – Southern 1772 1st –7/14-7/16 2nd –too far off 1st […]
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