Michigan State University

Enviroweather

Model:

Current status of McIntosh and apple pests at Keeler, 2024 (Report issued 4/25/2024 12:30)

Biofix dates

Codling moth first sustained catch (estimate: 4/28):

Obliquebanded leafroller first sustained catch:

Oriental fruit moth first adult emergence (estimate: 4/14):

Oriental fruit moth second generation adult emergence begins:

Apple crop stages (McIntosh)

Last stage	Full Bloom on 4/22
Next stage	Petal Fall expected on 4/29
Harvest estimates	McIntosh: 8/30; Jonathan: 9/10; Red Delicious: 9/13 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 795DD	--	Current (4/25): 160.7 Forecast (5/1): 238.6	50
Codling moth	No development observed	Biofix (first sustained catch) expected on 4/28	4/28	Current (4/25): Forecast (5/1): 57.1	50
Obliquebanded leafroller	No development observed	Watch for biofix (first sustained catch)	--	--	42
Oriental fruit moth	First eggs laid 4/18	Start of peak adult emergence expected on 4/28	4/14	Current (4/25): 100.9 Forecast (5/1): 206.6	45

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