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Schuylkill County

Apple Carbohydrate Thinning Model for Hegins.

Green tip: April 4
Bloom: April 30

DateMax Temp (°F)Min Temp (°F)Solar Rad (Mj/m2)ProductionDemandDaily Balance4-Day Avg. BalanceThinning Recommendation
26-May 68 56 13.2 67.13 68.94 -1.81 -1.16 Apply standard chemical thinner rte
27-May 72 48 16.8 87.05 65.74 21.32 -4.55 Apply standard chemical thinner rte
28-May 73 50 12.8 68.10 73.07 -4.96 -10.99 Apply standard chemical thinner rte
29-May 63 56 9.3 49.70 68.87 -19.17 -0.10 Apply standard chemical thinner rte
30-May 66 55 10.6 56.82 72.22 -15.40 8.84 Increase chemical thinner rate by 30%
31-May 74 57 16.6 81.47 85.91 -4.43 8.20 Increase chemical thinner rate by 30%
1-Jun 72 52 25.3 115.19 76.57 38.62 10.41 Increase chemical thinner rate by 30%
2-Jun 76 50 19.1 96.10 79.51 16.58 3.44 Increase chemical thinner rate by 30%
3-Jun 76 59 15.0 73.96 91.96 -17.99 -
4-Jun 74 55 17.4 88.69 84.26 4.43 -
5-Jun 69 55 16.8 88.61 77.88 10.72 -

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