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

cereal leaf beetle

Agronomic Crop Insects – April 30, 2010

April 29, 2010cmanneri

Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa If economic levels of alfalfa weevil were present before harvest and you decide to cut instead of spray, be sure to check fields within one week of cutting for damage to the regrowth.… Continue Reading →

Uncategorized 18:7, cereal leaf beetle, grass sawfly, true armyworm

Agronomic Crop Insects

April 8, 2010cmanneri

Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa Be sure to watch for economic levels of alfalfa weevil and pea aphids. When sampling for aphids and weevils, collect a minimum of 30 random stems throughout a field and place them top… Continue Reading →

Uncategorized 18:4, agronomic crop insect scouting, cereal leaf beetle, winter grain mite

Agronomic Crop Insects

April 1, 2010cmanneri

Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa Now that the weather has finally started to warm up, you should begin to sample for alfalfa weevil on a weekly basis. Look for small larvae feeding in the tips of plants producing… Continue Reading →

Uncategorized 18:3, alfalfa, alfalfa weevil, black cutworm, cereal leaf beetle, cereal rust mite, cutworms

Agronomic Crop Insects

April 3, 2009cmanneri

Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa If you have not started to sample for alfalfa weevil, be sure to begin sampling fields on a weekly basis. Larvae are present in fields in Kent and Sussex counties. Look for small… Continue Reading →

Uncategorized 17:3, agronomic crop insect scouting, alfalfa, alfalfa weevil, cereal leaf beetle, cereal rust mite, cutworms

Agronomic Crop Insects

April 11, 2008cmanneri

Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa If you have not started to sample for alfalfa weevil, be sure to begin sampling fields on a weekly basis. Look for small larvae feeding in the tips of plants producing a round,… Continue Reading →

Uncategorized 16:4, agronomic crop insect scouting, alfalfa weevil, black cutworm, cereal leaf beetle, cereal rust mite

Post navigation

Newer 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