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

Current status of McIntosh and apple pests at Grant, 2024 (Report issued 4/25/2024 6:10)

Biofix dates



Temperature and degree day data estimated for: 1/15

Apple crop stages (McIntosh)

Last stageOpen Cluster on 4/16
Next stagePink expected on 4/27
Harvest estimatesMcIntosh: 9/8; Jonathan: 9/17; Red Delicious: 9/25
More details

Insect pest predictions

InsectLast StageNext StageSelected
Biofix
DD since biofixDD Base
Apple maggotNo development observed
Emergence of adult fly
expected in 836DD
--Current (4/25): 119.6
Forecast (5/1): 184.4
50
Codling mothNo development observed
Watch for biofix (first sustained catch)
----50
Obliquebanded leafrollerNo development observed
Watch for biofix (first sustained catch)
----42
Oriental fruit mothBiofix (first adult emergence)
4/17
First eggs laid
expected on 4/28
4/17Current (4/25): 41.6
Forecast (5/1): 133.2
45