University of Delaware
Weekly Crop Update
  • UD Cooperative Extension Home
Weekly Crop Update
from UD Cooperative Extension
Menu Close
  • Current Issue
  • About WCU
  • Issue & Weather Archive
  • Subscribe

31:15

Weather Maps July 7th

July 7, 2023raharris

1 Week Accumulated Growing Degree Days 1 Month Accumulated Growing Degree Days 1 Week Accumulated Precipitation 1 Month Accumulated Precipitation

Weather 31:15, weather

Agronomic Crop Insect Scouting

July 7, 2023raharris

David Owens, Extension Entomologist, owensd@udel.edu Alfalfa Alfalfa Potato leafhopper populations are increasing. Most alfalfa should be ready to harvest at this point, but for fields that are not at bud or flowering, a good threshold table can be found on… Continue Reading →

Agronomic Crops 31:15

Fruit Crop Insect Scouting

July 7, 2023raharris

David Owens, Extension Entomologist, owensd@udel.edu Vineyards Pay special attention to Japanese beetle. A small demo plot at Carvel had significant defoliation this week. Defoliation thresholds for Japanese beetle are 15 to 20 percent leaf defoliation. Tree fruit Stink bugs continue… Continue Reading →

Fruit Crops 31:15, japanese beetle, stink bug

Vegetable Crop Insect Scouting

July 7, 2023raharris

David Owens, Extension Entomologist, owensd@udel.edu Cucurbits Squash vine borer and Squash bug continue to attack summer squashes. Treat for squash bug when there is an average of 1 egg mass per plant once egg masses begin hatching. You may have… Continue Reading →

Vegetable Crops 31:15, spider mite, squash vine borer

Corn Disease Updates

July 7, 2023raharris

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu I have been seeing the first tassels in corn over the past few days. As tasseling begins, it is a good time to scout fields to decide if a fungicide will be applied.… Continue Reading →

Agronomic Crops 31:15, diplodia leaf streak, grey leaf spot, northern corn leaf blight

Post navigation

← Older Articles

Additional Resources

  • Cooperative Extension Home
  • Commercial Vegetable Production Recommendations
  • Insect Sampling and Action Thresholds
  • Insect Trapping Programs
  • Integrated Weed Management
  • Extension Vegetable & Fruit Program
  • UD Extension Factsheets
  • DEOS Weather Station Data
  • NEWA Weather & Models

Join us on social media!

 

 

Admin

  • Log in
  • Entries RSS
  • Comments RSS
  • WordPress at UD
© 2025 Weekly Crop Update. All rights reserved.
Fashionista by aThemes
UD
  • Go to the UD twitter page (external link)>
  • Go to the UD facebook page (external link)>
  • Go to the UD instagram page (external link)>
  • Go to the UD youtube page (external link)>
  • Go to the UD pintrest page (external link)>
  • Go to the UD linkedin page (external link)>
  • ©   University of Delaware
  • Comments
  • Legal Notices
  • Accessibility Notice