Apple Carbohydrate Thinning Model for Pittsburgh Airport and McDonald, PA

Pittsburgh Airport

Green Tip: March 24, 2020
Full Bloom: May 4, 2020

Date Max Temp (°F) Min Temp (°F) Solar Rad (MJ/m2) Production Demand Balance 4-Day Avg Balance Thinning Recommendation
29-May 78 62 15.80 73.30 97.32 -24.02 27.29 Increase chemical thinner rate by 30%
30-May 69 51 16.90 89.38 70.66 18.72 37.25 Increase chemical thinner rate by 30%
31-May 62 49 24.90 116.75 59.16 57.59 23.04 Increase chemical thinner rate by 30%
1-Jun 71 41 23.70 117.54 60.67 56.86 5.15 Increase chemical thinner rate by 15%
2-Jun 78 48 18.20 95.01 79.18 15.83 -11.52 Apply standard chemical thinner rate
3-Jun 85 66 17.60 74.86 112.97 -38.11 -16.13 Apply standard chemical thinner rate
4-Jun 80 60 17.10 83.44 97.44 -14.00 -5.56 Apply standard chemical thinner rate
5-Jun 84 62 21.80 95.60 105.40 -9.80
6-Jun 83 60 21.60 98.60 101.21 -2.60
7-Jun 80 62 22.60 103.92 99.77 4.15

McDonald, PA

Green Tip: March 27, 2020
Full Bloom: April 28, 2020

Date Max Temp (°F) Min Temp (°F) Solar Rad (MJ/m2) Production Demand Balance 4-Day Avg Balance Thinning Recommendation
29-May 78 62 15.40 69.90 115.60 -45.69 21.13 Increase chemical thinner rate by 30%
30-May 74 49 16.10 83.50 80.70 2.80 36.83 Increase chemical thinner rate by 30%
31-May 65 42 25.40 117.60 57.14 60.46 26.98 Increase chemical thinner rate by 30%
1-Jun 70 34 24.70 119.11 52.17 66.94 8.22 Increase chemical thinner rate by 15%
2-Jun 77 46 18.40 94.58 77.44 17.14 -11.37 Apply standard chemical thinner rate
3-Jun 85 64 17.60 74.82 111.43 -36.61 -17.68 Apply standard chemical thinner rate
4-Jun 80 58 16.40 80.09 94.67 -14.58 -8.19 Apply standard chemical thinner rate
5-Jun 83 62 21.60 93.27 104.72 -11.44 -
6-Jun 84 60 21.60 94.94 103.02 -8.09 -
7-Jun 80 62 22.80 101.34 99.98 1.36

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