Michigan State University

Enviroweather

Model:

Current status of McIntosh and apple pests at Constantine, 2024 (Report issued 4/19/2024 12:06)

Biofix dates

Codling moth first sustained catch:

Obliquebanded leafroller first sustained catch:

Oriental fruit moth first adult emergence (estimate: 4/13):

Oriental fruit moth second generation adult emergence begins:

Apple crop stages (McIntosh)

Last stage	Full Bloom on 4/18
Next stage	Petal Fall expected in 44 DD
Harvest estimates	McIntosh: 8/30; Jonathan: 9/19; Red Delicious: 9/25 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 800DD	--	Current (4/19): 155.9 Forecast (4/25): 168.5	50
Codling moth	No development observed	Watch for biofix (first sustained catch)	--	--	50
Obliquebanded leafroller	No development observed	Watch for biofix (first sustained catch)	--	--	42
Oriental fruit moth	First eggs laid 4/17	Start of peak adult emergence expected in 69DD	4/13	Current (4/19): 88.4 Forecast (4/25): 114.9	45

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