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Output from uspest.org/wea insect degree-day/phenology model program:
Heat Units and predictions of key events from daily weather data
==============================MODEL INPUTS================================
Model species/general links: peach twig borer [stone fruits]
Type: insect
Model source/other links: 2007 USU Ext.
Calculation method: single sine
Lower threshold: 50 degrees Fahrenheit
Upper threshold: 88 degrees Fahrenheit
Directions for starting/BIOFIX: 1st consistent capture of moths in pheromone traps
(ca. 405 DD after Mar 1 or Jan 1 in warm climates)
Starting/BIOFIX date: 4 15
Ending date: 9 30
Model validation status: requires local validation
Region of known use: used in NW USA
==============================EVENTS TABLE================================
1. 55 DDs after biofix: OW gen. ca. 1st egg laying
2. 220 DDs after biofix: 1st gen. ca. 1st egg hatch, OW 49% male flight
3. 350 DDs after biofix: 1st gen. ca. 14% egg hatch (time to sample young larvae), OW 87% male flight
4. 500 DDs after biofix: 1st gen. ca. 63% egg hatch, OW 98% male flight
5. 684 DDs after biofix: 1st gen. ca. 96% egg hatch, earliest pupation
6. 1080 DDs after biofix: 2nd gen. ca. 1st egg hatch, 1st gen. 19% male flight
7. 1280 DDs after biofix: 2nd gen. ca. 13% egg hatch, 1st gen. 66% male flight
8. 1500 DDs after biofix: 2nd gen. ca. 61% egg hatch, 1st gen. 96% male flight
9. 1760 DDs after biofix: 2nd gen. ca. 96% egg hatch, 2nd gen. 1st male flight
10. 2240 DDs after biofix: 3rd gen. ca. 14% egg hatch, 2nd gen. 56% male flight
11. 2580 DDs after biofix: 3rd gen. ca. 73% egg hatch, 2nd gen. 96% male flight
12. 2820 DDs after biofix: 3rd gen. ca. 96% egg hatch, 3rd gen. 4% male flight
13. 3180 DDs after biofix: 4th gen. ca. 13% egg hatch (warmer climates only)
==============================MODEL OUTPUT================================
Weather station: 2016 MF24220 MILTON_FREEWATER_GROWERS Brown Home OR Lat45.9581 Long:-118.4206 Elev:898
mn day max min precip DD50 CUMDD50 event
-- --- ----- ----- ------ ---- ------- -------
5 26 69.00 52.70 0.00 10.85 10.9 * START *
5 27 66.50 50.30 0.00 8.40 19.2
5 28 74.30 48.40 0.00 11.52 30.8
5 29 77.40 53.80 0.00 15.60 46.4
5 30 75.50 49.20 0.00 12.41 58.8 OW gen. ca. 1st egg laying
5 31 84.80 47.80 0.00 16.53 75.3
6 1 86.50 51.10 0.00 18.80 94.1
6 2 71.70 58.10 0.39 14.90 109.0
6 3 84.30 57.10 0.00 20.70 129.7
6 4 91.20 53.00 0.00 21.70 151.4
6 5 91.60 55.60 0.00 23.11 174.5
6 6 99.20 64.50 0.40 29.05 203.6 Vx
6 7 96.20 67.70 0.00 30.02 233.6 1st gen. ca. 1st egg hatch, OW 49% male flight
6 8 87.90 70.70 0.00 29.30 262.9
6 9 77.50 58.10 0.00 17.80 280.7
6 10 67.50 52.80 0.05 10.15 290.8
6 11 71.00 50.10 0.00 10.55 301.4
6 12 76.40 45.00 0.30 11.56 313.0
6 13 74.10 56.20 0.00 15.15 328.1
6 14 68.00 50.70 0.00 9.35 337.5
6 15 68.00 46.70 0.00 7.91 345.4
6 16 62.20 46.10 0.41 4.99 350.4 1st gen. ca. 14% egg hatch (time to sample young larvae), OW 87% male flight
6 17 76.20 46.10 0.02 11.75 362.1
6 18 65.80 53.90 0.11 9.85 372.0
6 19 76.40 46.40 0.00 11.94 383.9
6 20 81.40 47.70 0.00 14.81 398.7 Vx
6 21 79.10 57.00 0.00 18.05 416.7
6 22 84.20 48.40 0.00 16.44 433.2
6 23 71.20 55.30 0.38 13.25 446.4
6 24 71.20 53.40 0.01 12.30 458.7
6 25 78.30 50.70 0.00 14.50 473.2
6 26 87.20 50.60 0.00 18.90 492.1
6 27 93.40 54.90 0.42 23.28 515.4 Vx 1st gen. ca. 63% egg hatch, OW 98% male flight
6 28 90.60 64.20 0.00 27.05 542.5
6 29 94.40 64.20 0.00 28.02 570.5 Vx
6 30 90.40 65.30 0.00 27.53 598.0 Vx Vn
7 1 86.00 55.20 0.41 20.60 618.6
7 2 89.80 63.50 0.00 26.45 645.1 Vx
7 3 85.50 66.90 0.00 26.20 671.3 Vx
7 4 79.90 54.50 0.00 17.20 688.5 1st gen. ca. 96% egg hatch, earliest pupation
7 5 71.60 53.60 0.56 12.60 701.1
7 6 78.30 59.00 0.00 18.65 719.7
7 7 81.50 58.70 0.00 20.10 739.8 Vx
7 8 77.80 60.20 0.16 19.00 758.8 Vx
7 9 77.90 56.80 0.07 17.35 776.2 Vx
7 10 66.50 57.90 0.00 12.20 788.4
7 11 77.70 57.80 0.00 17.75 806.1
7 12 76.40 57.20 0.02 16.80 822.9
7 13 83.30 57.00 0.00 20.15 843.1 Vx
7 14 89.70 52.60 0.31 20.99 864.1 Vx
7 15 81.30 57.50 0.00 19.40 883.5 Vx
7 16 83.60 58.30 0.00 20.95 904.4 Vx
7 17 87.90 56.20 0.00 22.05 926.5 Vx
7 18 80.70 58.10 0.08 19.40 945.9 Vx
7 19 79.50 59.30 0.00 19.40 965.3 Vx
7 20 87.30 60.50 0.00 23.90 989.2 Vx
7 21 94.90 56.40 0.00 24.39 1013.6 Vx
7 22 82.90 64.70 0.00 23.80 1037.4 Vx Vn
7 23 77.60 54.40 0.00 16.00 1053.4
7 24 90.00 53.00 0.00 21.30 1074.7 Vx
7 25 96.60 58.20 0.00 25.63 1100.3 Vx 2nd gen. ca. 1st egg hatch, 1st gen. 19% male flight
7 26 95.30 72.60 0.00 32.13 1132.4 Vx Vn
7 27 90.60 67.70 0.00 28.77 1161.2
7 28 83.20 61.80 0.00 22.50 1183.7
7 29 101.60 64.90 0.00 29.59 1213.3 Vx
7 30 94.60 71.70 0.00 31.60 1244.9 Vx Vn
7 31 86.80 62.50 0.00 24.65 1269.5 Vx Vn
8 1 90.50 56.40 0.00 23.16 1292.7 Vx Vn 2nd gen. ca. 13% egg hatch, 1st gen. 66% male flight
8 2 78.40 61.40 0.00 19.90 1312.6 Vx Vn
8 3 83.70 52.00 0.00 17.85 1330.4 Vx
8 4 92.70 52.60 0.00 21.96 1352.4 Vx Vn
8 5 94.10 55.60 0.00 23.80 1376.2 Vx
8 6 85.30 58.10 0.00 21.70 1397.9
8 7 82.80 58.10 0.00 20.45 1418.3 Vx
8 8 67.80 51.30 0.54 9.55 1427.9
8 9 70.50 55.60 0.00 13.05 1440.9
8 10 84.20 55.90 0.00 20.05 1461.0 Vx
8 11 90.20 57.50 0.00 23.61 1484.6 Vx Vn
8 12 95.60 61.30 0.00 26.90 1511.5 Vx Vn 2nd gen. ca. 61% egg hatch, 1st gen. 96% male flight
8 13 97.60 65.40 0.00 29.20 1540.7 Vx Vn
8 14 95.50 70.40 0.00 31.15 1571.9 Vx Vn
8 15 95.60 62.50 0.00 27.47 1599.3 Vx Vn
8 16 95.60 64.90 0.00 28.60 1627.9 Vx Vn
8 17 95.00 64.20 0.00 28.15 1656.1 Vx Vn
8 18 96.60 65.90 0.00 29.26 1685.3 Vx Vn
8 19 85.40 57.10 0.00 21.25 1706.6
8 20 83.80 54.70 0.24 19.25 1725.8
8 21 84.20 62.70 0.17 23.45 1749.3
8 22 76.20 55.00 0.00 15.60 1764.9 2nd gen. ca. 96% egg hatch, 2nd gen. 1st male flight
8 23 78.90 50.50 0.00 14.70 1779.6
8 24 86.70 53.40 0.00 20.05 1799.6 Vx
8 25 81.10 50.60 0.19 15.85 1815.5
8 26 81.20 50.20 0.26 15.70 1831.2
8 27 84.60 67.00 0.07 25.80 1857.0
8 28 89.00 64.20 0.16 26.51 1883.5 Vx
8 29 91.80 55.50 0.00 23.12 1906.6 Vx
8 30 78.00 60.20 0.00 19.10 1925.7
8 31 79.90 56.00 0.00 17.95 1943.7
9 1 76.00 59.00 0.00 17.50 1961.2
9 2 73.50 55.00 0.00 14.25 1975.4
9 3 71.40 55.40 0.00 13.40 1988.8
9 4 71.80 46.70 0.00 9.76 1998.6
9 5 74.60 49.50 0.00 12.08 2010.7 Vx
9 6 64.30 55.60 0.03 9.95 2020.6
9 7 74.70 56.00 0.00 15.35 2036.0
9 8 76.30 55.90 0.00 16.10 2052.1
9 9 76.30 47.40 0.00 12.18 2064.2
9 10 84.30 46.00 0.00 15.70 2079.9
9 11 75.50 56.30 0.00 15.90 2095.8 Vx
9 12 73.10 42.90 0.00 9.50 2105.3 Vx
9 13 69.70 38.00 0.00 7.12 2112.5
9 14 77.50 44.40 0.00 11.94 2124.4
9 15 70.50 47.40 0.69 9.32 2133.7
9 16 84.70 49.50 0.00 17.12 2150.9
9 17 68.90 62.20 0.00 15.55 2166.4
9 18 71.60 59.10 0.00 15.35 2181.8
9 19 68.00 56.80 0.00 12.40 2194.2 Vx
9 20 68.00 48.50 0.00 8.43 2202.6
9 21 62.40 42.10 0.00 4.44 2207.0
9 22 55.90 47.40 0.01 2.28 2209.3
9 23 66.10 51.00 0.00 8.55 2217.9
9 24 69.90 51.20 0.00 10.55 2228.4
9 25 79.00 49.00 0.00 14.08 2242.5 3rd gen. ca. 14% egg hatch, 2nd gen. 56% male flight
9 26 82.90 47.20 0.00 15.38 2257.9 Vx
9 27 82.40 57.90 0.00 20.15 2278.0
9 28 74.60 47.80 0.00 11.47 2289.5
9 29 77.50 47.20 0.00 12.71 2302.2
9 30 74.20 52.80 0.00 13.50 2315.7
Extended Seasonal Forecast: NOAA NMME 7-month 1910 MF24220 PRISM_rev1_4km 2012-2021
peach twig borer model - 2007 USU Ext.Location: 2016 MF24220 Brown Home OR Extended Seasonal Forecast: NOAA NMME | Date | DDs | Event |
| 5-30-16 | 59 | OW gen. ca. 1st egg laying |
| 6-7-16 | 234 | 1st gen. ca. 1st egg hatch, OW 49% male flight |
| 6-16-16 | 350 | 1st gen. ca. 14% egg hatch (time to sample young larvae), OW 87% male flight |
| 6-27-16 | 515 | 1st gen. ca. 63% egg hatch, OW 98% male flight |
| 7-4-16 | 688 | 1st gen. ca. 96% egg hatch, earliest pupation |
| 7-25-16 | 1100 | 2nd gen. ca. 1st egg hatch, 1st gen. 19% male flight |
| 8-1-16 | 1293 | 2nd gen. ca. 13% egg hatch, 1st gen. 66% male flight |
| 8-12-16 | 1512 | 2nd gen. ca. 61% egg hatch, 1st gen. 96% male flight |
| 8-22-16 | 1765 | 2nd gen. ca. 96% egg hatch, 2nd gen. 1st male flight |
| 9-25-16 | 2242 | 3rd gen. ca. 14% egg hatch, 2nd gen. 56% male flight |
![degree-day graph of peach twig borer [stone fruits] 2007 USU Ext.](/cgi-bin/ddplotj.pl?1264564)
