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  • Michigan State University Ag Bio Research
  • Project Greeen

Hickory Corners (KBS) Tart Cherry Plum Curculio Assist Chart Assist Chart (Report issued 10/31/2014 6:25 )

2014Temperature(F)Degree Days Base 50 FBiofix Date (Full bloom)
DayDateMaxMinAvgTodaySince 3/19/239/259/279/2910/110/310/510/710/910/1110/1310/1510/1710/1910/2110/2310/2510/2710/29
Sun10/2662.433.347.84258220518615813111495898374706238282318181000
Mon10/2774.433.55492591214194167139122104989283797147373127271990
Tue10/2869.247.758.592599223203175148131112107101928780554540363628170
Wed10/2948.740.844.802599223203175148131112107101928780554540363628170
Thu10/3049.140.744.902599223203175148131112107101928780554540363628170
Today's data:
2014Temperature(F)Degree Days Base 50 FBiofix Date (Full bloom)
DayDateMaxMinAvgTodaySince 3/19/239/259/279/2910/110/310/510/710/910/1110/1310/1510/1710/1910/2110/2310/2510/2710/29
Fri10/31Actual (1:55-2:00AM): 44.9Forecast: 3841.4502599223203175148131112107101928780554540363628170
Forecast data:
2014Temperature(F)Degree Days Base 50 FBiofix Date (Full bloom)
DayDateMaxMinAvgTodaySince 3/19/239/259/279/2910/110/310/510/710/910/1110/1310/1510/1710/1910/2110/2310/2510/2710/29
Sat11/1392431.502599223203175148131112107101928780554540363628170
Sun11/2452233.502599223203175148131112107101928780554540363628170
Mon11/3533443.512600223204176148132113107101928880564641363628181
Tue11/454424812601224205177149133114108102938981574742373729192
Wed11/553414712602225205178150133115109103949082584842383830202
Thu11/6494044.502602225205178150133115109103949082584842383830202
Directions:

Locate the Biofix Date (date of full bloom) on the top row. Follow that column down to determine the Base 50F Growing Degree Days (GDD) that have accumulated between the biofix date and the date listed at the left side of that row. Note that forecast data is provided (where available) to help with planning in the near-term. Control is recommended at 375 GDD from the biofix date. Repeat for additional blocks that bloomed on a different date.

MSU Tart Cherry Postponed Insecticide Treatment Strategy (P.I.T.S.) for Plum Curculio:
  • Use date of full bloom as biofix date.
  • Time control for 375 degree days (base 50F) from the biofix date.
  • This model is not recommended for growers that are not intensively scouting their orchards.