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Centre County

Apple Carbohydrate Thinning Model for Rock Springs.

Green tip: April 13, 2018
Bloom: May 11, 2018

DateMax Temp (°F)Min Temp (°F)Solar Rad (MJ/m2)ProductionDemandBalance4-Day Avg BalanceThinning Recommendation
4-Jun 70 56 16.5 81.86 60.75 21.12 40.00 Increase chemical thinner rate by 30%
5-Jun 69 50 19.8 98.92 55.53 43.39 40.13 Increase chemical thinner rate by 30%
6-Jun 64 48 13.7 76.60 49.86 26.74 28.06 Increase chemical thinner rate by 30%
7-Jun 74 46 29.6 129.11 60.35 68.76 4.34 Increase chemical thinner rate by 15%
8-Jun 79 53 21.5 99.61 77.99 21.63 -15.11 Apply standard chemical thinner rate
9-Jun 79 60 19.1 85.55 90.46 -4.91 -12.63 Apply standard chemical thinner rate
10-Jun 65 57 3.0 2.42 70.55 -68.13 -13.59 Apply standard chemical thinner rate
11-Jun 68 57 12.9 67.98 77.03 -9.05 6.19 Increase chemical thinner rate by 15%
12-Jun 73 51 22.7 109.53 77.96 31.57 11.96 Increase chemical thinner rate by 15%
13-Jun 79 60 20.0 90.75 99.52 -8.77 9.16 Increase chemical thinner rate by 15%
14-Jun 78 59 24.6 107.65 96.64 11.01 14.11 Increase chemical thinner rate by 15%
15-Jun 75 57 22.0 103.75 89.70 14.04
16-Jun 75 56 23.2 108.79 88.45 20.34 -
17-Jun 79 58 24.2 108.03 96.99 11.04

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