University of Wisconsin–Madison

Tag: aphids

Vegetable Crop Update – Aug 9, 2026

In this issue: Potato Early and Late Blight Disease Risk Modelling and Management |
Cucurbit Downy Mildew Updates | Weather and Potato Production Updates | Aphid Pests of Vegetable Crops | UW Extension Potato Groundwater Quality Field Day Update

Vegetable Crop Update – Jun 2, 2025

In this issue: Potato Leafhopper updates and management | Aphids – updates on suction traps and implications | Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates

Update 15 – August 15, 2024

In This Issue: More Aphids! Identifying and managing vegetable aphids. Potato late blight and early blight updates. Cucurbit downy mildew updates and disease look-alikes in WI.

Update 12 – Aug 4, 2024

In this issue: Potato production updates: stress from heat and high rainfall showing late-season effects. Potato colonizing aphids, Squash bugs in cucurbits, Western bean cutworm updates and management. Potato and vegetable disease forecasting updates – thresholds met for late blight and early blight treatments. Cucurbit downy mildew.

Update 2 – May 26, 2024

In this issue: 2024 Commercial Vegetable Production in Wisconsin Guide (A3422). Potato and veg disease forecasting in 2024 update. Aphids, flea beetles, cole crop and imported cabbage worm, and Colorado potato beetle updates and management.

Update 1 – May 19, 2024

In this issue: 2024 Commercial Vegetable Production in Wisconsin Guide (A3422). Potato and veg disease forecasting in 2024. UW Entomology, Pathology, Vegetable Disease and Insect Forecasting Network, Wisconet and other weather-based vegetable management tools. Seedcorn maggot, Colorado potato beetle, aphids.

Update 12 – Aug 6, 2023

In This Issue: Potato and tomato early blight and late blight disease updates Cucurbit downy mildew updates Corn earworm and potato colonizing aphids   Amanda Gevens, Chair, Professor & Extension Vegetable Pathologist, UW-Madison, Dept. of Plant Pathology, 608-575-3029, Email:  gevens@wisc.edu, Lab Website: https://vegpath.plantpath.wisc.edu/ Early blight of potato/tomato. Accumulations of P-days this past week were between …

Update 9 – July 16, 2023

In this issue: Potato and tomato early blight and late blight disease updates, Cucurbit downy mildew updates, Cucurbit powdery mildew updates, Potato Virus Y updates and management, Two-spotted spider mites, Caterpillar pests

Update 3 – June 4, 2023

In this issue: Potato and vegetable disease model updates Potato early blight management options Natural control of insects, Two-spotted spider mites and mint bud mite, onion thrips, aphids, and Colorado potato beetle updates Colorado potato beetle management options   Amanda Gevens, Chair, Professor & Extension Vegetable Pathologist, UW-Madison, Dept. of Plant Pathology, 608-575-3029, Email:  gevens@wisc.edu, …