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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 MF23325 MILTON_FREEWATER_GROWERS Brown Bixby OR Lat45.9681 Long:-118.4325 Elev:846
mn day max min precip DD50 CUMDD50 event
-- --- ----- ----- ------ ---- ------- -------
5 26 71.70 53.80 0.00 12.75 12.8 * START *
5 27 67.90 51.00 0.00 9.45 22.2
5 28 74.00 48.70 0.00 11.48 33.7
5 29 78.80 54.90 0.00 16.85 50.5
5 30 78.40 46.70 0.00 13.01 63.5 OW gen. ca. 1st egg laying
5 31 85.50 42.00 0.00 15.23 78.8
6 1 83.00 49.90 0.00 16.45 95.2
6 2 76.80 65.00 0.00 20.90 116.1
6 3 86.60 56.80 0.00 21.70 137.8
6 4 95.20 51.50 0.00 22.09 159.9
6 5 94.90 54.10 0.00 23.27 183.2
6 6 99.90 60.30 0.00 27.24 210.4 Vx
6 7 91.80 63.30 0.00 26.95 237.4 1st gen. ca. 1st egg hatch, OW 49% male flight
6 8 85.60 67.30 0.00 26.45 263.8
6 9 77.90 59.00 0.00 18.45 282.3
6 10 68.70 53.80 0.00 11.25 293.5
6 11 70.70 49.20 0.00 10.02 303.5
6 12 76.80 46.50 0.00 12.16 315.7
6 13 73.30 52.10 0.00 12.70 328.4
6 14 70.40 51.70 0.00 11.05 339.4
6 15 69.80 47.20 0.00 8.92 348.4
6 16 72.00 45.90 0.00 9.65 358.0 1st gen. ca. 14% egg hatch (time to sample young larvae), OW 87% male flight
6 17 76.80 45.40 0.00 11.86 369.9
6 18 68.80 55.50 0.00 12.15 382.0
6 19 78.30 42.70 0.00 11.93 394.0
6 20 81.60 47.60 0.00 14.87 408.8 Vx
6 21 80.50 56.80 0.00 18.65 427.5
6 22 85.00 47.40 0.00 16.49 444.0
6 23 81.10 60.50 0.00 20.80 464.8
6 24 70.70 54.10 0.01 12.40 477.2
6 25 79.70 51.30 0.00 15.50 492.7
6 26 86.20 48.60 0.00 17.51 510.2 1st gen. ca. 63% egg hatch, OW 98% male flight
6 27 93.70 60.50 0.00 26.08 536.3 Vx Vn
6 28 90.70 62.10 0.00 26.04 562.3
6 29 94.60 60.40 0.00 26.24 588.6 Vx
6 30 90.50 66.00 0.00 27.91 616.5 Vx Vn
7 1 89.00 63.50 0.00 26.17 642.6 Vx Vn
7 2 90.00 63.00 0.00 26.27 668.9 Vx Vn
7 3 85.80 64.90 0.00 25.35 694.3 Vx Vn 1st gen. ca. 96% egg hatch, earliest pupation
7 4 81.50 53.00 0.00 17.25 711.5
7 5 79.30 53.20 0.00 16.25 727.8
7 6 79.00 58.80 0.00 18.90 746.7
7 7 81.70 54.50 0.00 18.10 764.8 Vx
7 8 78.00 60.50 0.02 19.25 784.0 Vx
7 9 77.00 57.70 0.00 17.35 801.4
7 10 68.00 58.90 0.00 13.45 814.8
7 11 81.00 59.60 0.00 20.30 835.1 Vx
7 12 76.80 56.70 0.00 16.75 851.9
7 13 83.50 58.10 0.00 20.80 872.7 Vx
7 14 89.90 53.30 0.00 21.42 894.1 Vx
7 15 81.60 55.80 0.00 18.70 912.8 Vx
7 16 83.90 59.70 0.00 21.80 934.6 Vx
7 17 88.30 54.60 0.00 21.44 956.0 Vx
7 18 81.00 59.80 0.00 20.40 976.4 Vx
7 19 79.50 59.70 0.00 19.60 996.0 Vx
7 20 87.60 59.10 0.00 23.35 1019.4 Vx
7 21 95.30 54.60 0.00 23.61 1043.0 Vx
7 22 83.00 64.90 0.00 23.95 1066.9 Vx Vn
7 23 85.70 54.70 0.00 20.20 1087.1 2nd gen. ca. 1st egg hatch, 1st gen. 19% male flight
7 24 90.30 52.40 0.00 21.11 1108.2 Vx
7 25 96.80 55.60 0.00 24.43 1132.7 Vx
7 26 96.00 72.60 0.00 32.24 1164.9 Vx Vn
7 27 96.00 65.50 0.00 28.96 1193.9
7 28 97.00 62.60 0.00 27.79 1221.6
7 29 101.90 63.30 0.00 28.91 1250.6 Vx
7 30 94.80 70.40 0.00 31.03 1281.6 Vx 2nd gen. ca. 13% egg hatch, 1st gen. 66% male flight
7 31 87.10 65.00 0.00 26.05 1307.6 Vx
8 1 91.00 56.70 0.00 23.47 1331.1 Vx Vn
8 2 78.60 61.80 0.00 20.20 1351.3 Vx Vn
8 3 84.20 53.40 0.00 18.80 1370.1 Vx
8 4 93.00 50.80 0.00 21.16 1391.3 Vx Vn
8 5 94.30 52.50 0.00 22.35 1413.6 Vx
8 6 82.70 57.70 0.00 20.20 1433.8
8 7 83.00 59.00 0.00 21.00 1454.8 Vx
8 8 75.00 53.40 0.00 14.20 1469.0
8 9 72.40 55.90 0.00 14.15 1483.2
8 10 84.60 56.20 0.00 20.40 1503.6 Vx 2nd gen. ca. 61% egg hatch, 1st gen. 96% male flight
8 11 90.50 57.60 0.00 23.76 1527.3 Vx Vn
8 12 95.90 61.30 0.00 26.96 1554.3 Vx Vn
8 13 97.90 65.50 0.00 29.30 1583.6 Vx Vn
8 14 95.80 70.60 0.00 31.29 1614.9 Vx Vn
8 15 96.00 63.00 0.00 27.78 1642.7 Vx Vn
8 16 91.40 60.80 0.00 25.61 1668.3
8 17 91.80 60.70 0.00 25.68 1694.0
8 18 96.90 58.70 0.00 25.93 1719.9 Vx
8 19 88.60 55.60 0.00 22.07 1741.9
8 20 90.10 51.00 0.00 20.34 1762.3 2nd gen. ca. 96% egg hatch, 2nd gen. 1st male flight
8 21 92.20 59.20 0.00 25.06 1787.3
8 22 78.90 53.70 0.00 16.30 1803.6
8 23 82.30 48.40 0.00 15.50 1819.1
8 24 87.00 50.80 0.00 18.90 1838.0 Vx
8 25 84.90 49.90 0.00 17.40 1855.4
8 26 88.00 48.50 0.00 18.37 1873.8
8 27 88.10 66.80 0.00 27.45 1901.3
8 28 89.40 65.80 0.00 27.45 1928.7 Vx
8 29 92.10 54.40 0.00 22.67 1951.4 Vx
8 30 79.60 59.40 0.00 19.50 1970.9
8 31 81.50 54.10 0.00 17.80 1988.7
9 1 76.60 59.30 0.00 17.95 2006.6
9 2 74.20 55.20 0.00 14.70 2021.3
9 3 72.20 55.90 0.00 14.05 2035.4
9 4 72.60 43.70 0.00 9.43 2044.8
9 5 74.80 50.10 0.00 12.45 2057.3 Vx
9 6 65.20 56.30 0.00 10.75 2068.0
9 7 76.40 57.20 0.00 16.80 2084.8
9 8 77.00 58.00 0.00 17.50 2102.3
9 9 77.40 45.70 0.00 12.23 2114.6
9 10 84.80 43.30 0.00 15.21 2129.8
9 11 76.00 54.10 0.00 15.05 2144.8
9 12 73.30 43.20 0.00 9.65 2154.5 Vx
9 13 70.20 35.90 0.00 7.07 2161.5
9 14 77.60 43.00 0.00 11.66 2173.2
9 15 81.00 46.40 0.00 14.20 2187.4
9 16 81.40 47.60 0.00 14.77 2202.2
9 17 70.70 61.90 0.00 16.30 2218.5
9 18 72.20 58.00 0.00 15.10 2233.6
9 19 68.30 57.80 0.00 13.05 2246.6 Vx 3rd gen. ca. 14% egg hatch, 2nd gen. 56% male flight
9 20 69.50 48.40 0.00 9.14 2255.8
9 21 67.50 40.40 0.00 6.47 2262.2 Vx
9 22 58.20 46.10 0.00 3.12 2265.4
9 23 67.10 49.50 0.00 8.34 2273.7
9 24 70.60 52.50 0.00 11.55 2285.2
9 25 80.90 44.90 0.00 13.73 2299.0
9 26 83.10 46.30 0.00 15.20 2314.2 Vx
9 27 82.90 53.90 0.00 18.40 2332.6
9 28 75.80 48.10 0.00 12.16 2344.7
9 29 77.10 46.10 0.00 12.19 2356.9
9 30 73.20 52.20 0.00 12.70 2369.6
Extended Seasonal Forecast: NOAA NMME 7-month 1910 MF23325 PRISM_rev1_4km 2012-2021
peach twig borer model - 2007 USU Ext.Location: 2016 MF23325 Brown Bixby OR Extended Seasonal Forecast: NOAA NMME | Date | DDs | Event |
| 5-30-16 | 64 | OW gen. ca. 1st egg laying |
| 6-7-16 | 237 | 1st gen. ca. 1st egg hatch, OW 49% male flight |
| 6-16-16 | 358 | 1st gen. ca. 14% egg hatch (time to sample young larvae), OW 87% male flight |
| 6-26-16 | 510 | 1st gen. ca. 63% egg hatch, OW 98% male flight |
| 7-3-16 | 694 | 1st gen. ca. 96% egg hatch, earliest pupation |
| 7-23-16 | 1087 | 2nd gen. ca. 1st egg hatch, 1st gen. 19% male flight |
| 7-30-16 | 1282 | 2nd gen. ca. 13% egg hatch, 1st gen. 66% male flight |
| 8-10-16 | 1504 | 2nd gen. ca. 61% egg hatch, 1st gen. 96% male flight |
| 8-20-16 | 1762 | 2nd gen. ca. 96% egg hatch, 2nd gen. 1st male flight |
| 9-19-16 | 2247 | 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?1299)
