Skip to main content
  • Michigan State University Extension
  • Michigan State University Ag Bio Research
  • Project GREEEN

Seasonal history of McIntosh and apple pests at Grand Junction, 2024 (Report issued 4/26/2024 1:35)

Biofix dates



Temperature and degree day data estimated for: 4/25
DateDD42 since 1/1Apple Crop Stage (McIntosh) Insect Stages
3/394.1Dormant
3/6127.71st Green
3/16191.21/4" Green
3/26212.91/2" Green
4/7246.4Tight Cluster
4/10284.2Open Cluster
4/14330.9Oriental fruit moth: Biofix (first adult emergence)
4/17386.3Pink
4/19400.3King Bloom
4/21404.6Oriental fruit moth: First eggs laid
4/23425.2Full Bloom
4/28494Codling moth: Biofix (first sustained catch)
4/29520Petal FallOriental fruit moth: Start of peak adult emergence