Michigan State University

Enviroweather

Model:

Current status of McIntosh and apple pests at Standale / Walker, 2024 (Report issued 4/26/2024 3:20)

Biofix dates

Codling moth first sustained catch (estimate: 4/29):

Obliquebanded leafroller first sustained catch:

Oriental fruit moth first adult emergence (estimate: 4/15):

Oriental fruit moth second generation adult emergence begins:

Apple crop stages (McIntosh)

Last stage	King Bloom on 4/24
Next stage	Full Bloom expected on 4/27
Harvest estimates	McIntosh: 9/3; Jonathan: 9/6; Red Delicious: 9/12 More details

Insect pest predictions

Insect	Last Stage	Next Stage	Selected Biofix	DD since biofix	DD Base
Apple maggot	No development observed	Emergence of adult fly expected in 806DD	--	Current (4/26): 149.2 Forecast (5/2): 233	50
Codling moth	No development observed	Biofix (first sustained catch) expected on 4/29	4/29	Current (4/26): Forecast (5/2): 46.8	50
Obliquebanded leafroller	No development observed	Watch for biofix (first sustained catch)	--	--	42
Oriental fruit moth	First eggs laid 4/25	Start of peak adult emergence expected on 4/29	4/15	Current (4/26): 82.1 Forecast (5/2): 195.6	45

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