Apple Carbohydrate Thinning Model for Pittsburgh Airport and McDonald, PA

Pittsburgh Airport

Green Tip: April 5, 2019
Full Bloom: April 25, 2019

DateMax Temp (°F)Min Temp (°F)Solar Rad (MJ/m2)ProductionDemandBalance4-Day Avg BalanceThinning Recommendation
25-May 83 54 18.20 79.05 65.44 13.61 7.53 Increase chemical thinner rate by 15%
26-May 78 58 15.30 68.15 65.77 2.38 3.77 Increase chemical thinner rate by 15%
27-May 80 59 25.40 99.42 70.11 29.31 -2.27 Apply standard chemical thinner rate
28-May 81 59 13.70 58.99 74.18 -15.19 -1.02 Apply standard chemical thinner rate
29-May 76 57 14.30 67.43 68.87 -1.43 11.29 Increase chemical thinner rate by 15%
30-May 72 63 11.70 52.05 73.85 -21.79 15.63 Increase chemical thinner rate by 15%
31-May 73 54 22.20 101.47 67.14 34.33 28.83
1-Jun 76 54 24.50 107.27 73.23 34.05
2-Jun 74 54 18.40 89.24 73.30 15.95
3-Jun 75 51 22.10 104.19 73.21 30.98

McDonald, PA

Green Tip: April 7, 2019
Full Bloom: April 25, 2019

DateMax Temp (°F)Min Temp (°F)Solar Rad (MJ/m2)ProductionDemandBalance4-Day Avg BalanceThinning Recommendation
25-May 83 54 18.20 79.05 65.44 13.61 7.53 Increase chemical thinner rate by 15%
26-May 78 58 15.30 68.15 65.77 2.38 3.77 Increase chemical thinner rate by 15%
27-May 80 59 25.40 99.42 70.11 29.31 -2.27 Apply standard chemical thinner rate
28-May 81 59 13.70 58.99 74.18 -15.19 -1.02 Apply standard chemical thinner rate
29-May 76 57 14.30 67.43 68.87 -1.43 11.29 Increase chemical thinner rate by 15%
30-May 72 63 11.70 52.05 73.85 -21.79 15.63 Increase chemical thinner rate by 15%
31-May 73 54 22.20 101.47 67.14 34.33 28.83
1-Jun 76 54 24.50 107.27 73.23 34.05
2-Jun 74 54 18.40 89.24 73.30 15.95
3-Jun 75 51 22.10 104.19 73.21 30.98

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