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Schuylkill County

Apple Carbohydrate Thinning Model for Hegins.

Green tip: April 12, 2018
Bloom: May 5, 2018

DateMax Temp (°F)Min Temp (°F)Solar Rad (MJ/m2)ProductionDemandBalance4-Day Avg BalanceThinning Recommendation
4-Jun 71 51 13.4 71.50 58.99 12.51 9.53 Increase chemical thinner rate by 15%
5-Jun 71 47 10.0 56.40 56.33 0.07 11.33 Increase chemical thinner rate by 15%
6-Jun 65 53 8.5 46.43 57.85 -11.42 13.07 Increase chemical thinner rate by 15%
7-Jun 73 48 20.2 101.78 64.80 36.97 -3.33 Apply standard chemical thinner rate
8-Jun 79 52 21.1 99.40 79.69 19.71 -12.31 Apply standard chemical thinner rate
9-Jun 79 56 20.7 95.13 88.14 7.00 -7.37 Apply standard chemical thinner rate
10-Jun 69 56 2.8 0.00 77.00 -77.00 -13.07 Apply Standard Chemical Thinner Rate
11-Jun 71 55 15.6 81.50 80.47 1.03 6.25 Increase chemical thinner rate by 15%
12-Jun 73 50 24.5 116.21 76.72 39.50 7.99 Increase chemical thinner rate by 15%
13-Jun 79 61 18.6 85.28 101.10 -15.81 1.38 Increase chemical thinner rate by 15%
14-Jun 80 61 24.0 103.01 102.73 0.28 6.92 Increase chemical thinner rate by 15%
15-Jun 78 58 22.5 103.33 95.32 8.01 -
16-Jun 77 58 23.3 107.08 94.04 13.04 -
17-Jun 81 59 24.9 107.99 101.65 6.34

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