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Erie County

Apple Carbohydrate Thinning Model for Escarpment

Green tip: April 5
Bloom: April 26

DateMax Temp (°F)Min Temp (°F)Solar Rad (Mj/m2)ProductionDemandDaily Balance4-Day Avg. BalanceThinning Recommendation
26-May 58 53 7.0 35.17 52.18 -17.02 26.58 Increase chemical thinner rate by 30%
27-May 69 52 32.4 123.65 64.30 59.35 37.17 Increase chemical thinner rate by 30%
28-May 76 54 26.4 108.11 74.44 33.66 28.53 Increase chemical thinner rate by 30%
29-May 77 61 32.3 115.74 85.41 30.33 30.53 Increase chemical thinner rate by 30%
30-May 69 57 20.9 95.14 69.78 25.35 23.54 Increase chemical thinner rate by 30%
31-May 63 56 17.6 86.23 61.47 24.77 23.49 Increase chemical thinner rate by 30%
1-Jun 69 53 24.2 108.60 66.92 41.68 24.19 Increase chemical thinner rate by 30%
2-Jun 69 53 13.6 71.36 69.01 2.35 20.10 Increase chemical thinner rate by 30%
3-Jun 66 55 19.6 94.92 69.73 25.18 -
4-Jun 66 54 20.1 97.93 70.37 27.55 -
5-Jun 63 54 18.1 91.82 66.52 25.30 -

Note date printed in boldface is the date the model was run and is based on expected temperatures for that specific date and location.

Contact Information

Robert Crassweller
  • Professor of Horticulture
Email:
Phone: 814-863-6163