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Lygus bug [alfalfa seed]
insect model
of Ben Simko 2000
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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: Lygus bug [alfalfa seed]
Type: insect
Model source/other links: Ben Simko 2000
Calculation method: single sine
Lower threshold: 52 degrees Fahrenheit
Setting upper threshold to: 130 F (default)
Directions for starting/BIOFIX: calendar date
No starting/BIOFIX date, set to: default date 1 1
Ending date: 7 0
Model validation status: partly validated
Region of known use: E. Oregon, SW Idaho
==============================EVENTS TABLE================================
1. 275 DD after biofix Peak 1st and 2nd instars nymphs
==============================MODEL OUTPUT================================
Weather station: 2017 CRVO Agrimet CORVALLIS OR Lat44.6342 Long-123.1897 Elev:230
mn day max min precip DD52 CUMDD52 event
-- --- ----- ----- ------ ---- ------- -------
1 1 38.60 33.00 0.35 0.00 0.0 * START *
1 2 34.20 29.40 0.03 0.00 0.0
1 3 35.40 27.20 0.00 0.00 0.0
1 4 35.80 25.10 0.00 0.00 0.0
1 5 34.30 19.90 0.00 0.00 0.0
1 6 35.10 15.50 0.00 0.00 0.0
1 7 28.30 24.60 0.00 0.00 0.0
1 8 35.20 27.90 1.22 0.00 0.0
1 9 40.20 35.30 0.62 0.00 0.0
1 10 38.80 33.30 1.04 0.00 0.0
1 11 35.50 30.80 0.10 0.00 0.0
1 12 33.40 26.20 0.00 0.00 0.0
1 13 30.20 20.50 0.00 0.00 0.0
1 14 31.30 20.50 0.00 0.00 0.0
1 15 33.10 20.90 0.00 0.00 0.0
1 16 38.40 24.20 0.00 0.00 0.0
1 17 49.30 27.40 0.49 0.00 0.0
1 18 53.90 44.60 0.47 0.37 0.4
1 19 50.20 39.70 0.11 0.00 0.4
1 20 51.60 37.40 0.12 0.00 0.4
1 21 46.80 37.80 0.44 0.00 0.4
1 22 50.10 36.70 0.16 0.00 0.4
1 23 51.00 31.00 0.01 0.00 0.4
1 24 47.20 28.60 0.00 0.00 0.4
1 25 44.60 36.30 0.01 0.00 0.4
1 26 52.00 36.20 0.01 0.00 0.4
1 27 40.80 32.10 0.00 0.00 0.4
1 28 38.40 33.20 0.01 0.00 0.4
1 29 45.00 34.30 0.00 0.00 0.4
1 30 47.90 37.90 0.00 0.00 0.4
1 31 45.80 36.40 0.04 0.00 0.4
2 1 41.10 34.90 0.00 0.00 0.4
2 2 43.10 33.80 0.01 0.00 0.4
2 3 45.60 30.20 0.91 0.00 0.4
2 4 51.90 47.00 0.62 0.00 0.4
2 5 47.00 37.40 2.01 0.00 0.4
2 6 43.60 36.30 0.27 0.00 0.4
2 7 40.70 35.40 0.19 0.00 0.4
2 8 51.10 39.10 0.83 0.00 0.4
2 9 58.60 46.20 0.66 2.18 2.6
2 10 50.20 37.40 0.15 0.00 2.6
2 11 50.80 34.70 0.01 0.00 2.6
2 12 48.00 32.40 0.00 0.00 2.6
2 13 54.40 33.80 0.00 0.35 2.9
2 14 49.60 31.00 0.04 0.00 2.9
2 15 55.20 44.80 0.78 0.78 3.7
2 16 54.40 45.80 1.39 0.55 4.2
2 17 53.30 41.40 0.00 0.18 4.4
2 18 51.60 43.70 0.16 0.00 4.4
2 19 50.40 39.00 0.33 0.00 4.4
2 20 51.60 42.40 0.74 0.00 4.4
2 21 46.10 39.20 0.88 0.00 4.4
2 22 45.80 34.00 0.10 0.00 4.4
2 23 44.10 32.70 0.01 0.00 4.4
2 24 40.40 32.20 0.10 0.00 4.4
2 25 46.80 33.50 0.01 0.00 4.4
2 26 44.00 32.80 0.26 0.00 4.4
2 27 43.00 32.20 0.09 0.00 4.4
2 28 48.20 34.80 0.13 0.00 4.4
3 1 51.60 38.10 0.01 0.00 4.4
3 2 49.40 34.30 0.01 0.00 4.4
3 3 49.60 42.20 0.33 0.00 4.4
3 4 46.90 36.40 0.09 0.00 4.4
3 5 43.10 33.50 0.41 0.00 4.4
3 6 44.00 32.60 0.73 0.00 4.4
3 7 48.30 40.10 0.37 0.00 4.4
3 8 52.30 44.20 0.16 0.02 4.4
3 9 58.00 50.00 0.47 2.44 6.9
3 10 60.10 46.70 0.01 2.88 9.8
3 11 57.50 42.40 0.19 1.47 11.2
3 12 63.00 42.90 0.00 3.69 14.9
3 13 57.70 42.90 0.19 1.57 16.5 *Warning: using yesterdays min*
3 14 58.00 42.90 0.61 1.68 18.2 *Warning: using yesterdays min*
3 15 55.00 46.10 0.45 0.77 18.9
3 16 56.40 35.60 0.00 0.88 19.8
3 17 52.30 36.50 0.09 0.02 19.8
3 18 56.20 40.60 0.30 0.95 20.8
3 19 54.20 34.70 0.00 0.32 21.1
3 20 48.40 44.10 0.20 0.00 21.1
3 21 62.90 44.80 0.12 3.87 25.0
3 22 52.70 42.80 0.09 0.08 25.0
3 23 55.80 33.50 0.24 0.68 25.7
3 24 54.40 45.30 0.00 0.54 26.3
3 25 53.50 43.50 0.00 0.25 26.5
3 26 52.50 43.10 0.25 0.05 26.6
3 27 52.70 43.30 0.09 0.08 26.6
3 28 61.60 45.90 0.05 3.44 30.1
3 29 53.90 45.80 0.45 0.40 30.5
3 30 56.90 38.80 0.01 1.11 31.6
3 31 56.80 32.50 0.01 0.92 32.5
4 1 59.00 42.50 0.04 2.03 34.5
4 2 55.60 40.20 0.03 0.76 35.3
4 3 54.40 33.60 0.00 0.35 35.7
4 4 56.30 37.00 0.00 0.88 36.5 Hx Hn
4 5 59.10 44.80 0.00 2.25 38.8
4 6 63.70 46.30 0.17 4.44 43.2
4 7 54.10 42.60 0.38 0.39 43.6
4 8 52.60 39.00 0.03 0.05 43.7
4 9 55.70 37.40 0.13 0.72 44.4
4 10 56.80 41.20 0.05 1.17 45.6
4 11 50.40 40.70 0.28 0.00 45.6
4 12 58.90 44.70 0.13 2.16 47.7
4 13 52.80 43.10 0.04 0.10 47.8
4 14 53.70 38.10 0.03 0.24 48.1
4 15 58.80 33.30 0.00 1.53 49.6
4 16 61.20 42.90 0.28 2.94 52.5
4 17 58.70 45.10 0.44 2.11 54.6
4 18 63.30 47.10 0.06 4.38 59.0
4 19 58.30 43.40 0.20 1.82 60.8
4 20 59.80 42.50 0.19 2.34 63.2
4 21 66.20 38.10 0.00 4.55 67.7
4 22 61.50 47.30 0.04 3.59 71.3
4 23 56.40 46.40 0.09 1.30 72.6
4 24 57.50 45.80 0.27 1.69 74.3
4 25 53.60 43.50 0.22 0.27 74.6
4 26 55.50 44.70 0.28 0.88 75.5
4 27 56.10 40.30 0.02 0.91 76.4
4 28 58.60 33.80 0.00 1.49 77.9
4 29 65.00 35.90 0.05 3.88 81.8
4 30 59.80 43.90 0.04 2.46 84.2
5 1 56.70 37.80 0.00 1.02 85.2
5 2 66.30 52.30 0.00 7.30 92.5
5 3 79.10 51.00 0.00 13.13 105.7
5 4 82.90 53.60 0.06 16.25 121.9
5 5 57.20 44.10 0.09 1.45 123.4
5 6 59.40 38.10 0.00 1.92 125.3
5 7 63.50 36.40 0.00 3.34 128.6
5 8 70.90 40.00 0.00 6.77 135.4
5 9 75.60 40.80 0.00 8.99 144.4
5 10 73.10 43.30 0.00 8.26 152.6
5 11 57.90 46.80 0.28 1.95 154.6
5 12 53.90 43.20 0.24 0.35 154.9
5 13 54.00 41.20 0.29 0.34 155.3
5 14 60.50 44.50 0.17 2.80 158.1
5 15 60.40 40.60 0.07 2.44 160.5
5 16 57.40 47.60 0.33 1.82 162.3
5 17 61.20 46.40 0.01 3.33 165.7
5 18 70.40 38.20 0.00 6.33 172.0
5 19 75.10 47.50 0.00 10.08 182.1
5 20 69.00 47.90 0.00 7.23 189.3
5 21 79.00 53.50 0.00 14.25 203.6
5 22 86.70 60.20 0.00 21.45 225.0
5 23 84.60 55.20 0.00 17.90 242.9
5 24 65.20 44.80 0.00 4.89 247.8
5 25 72.00 44.50 0.00 7.96 255.8
5 26 80.60 48.00 0.00 12.90 268.7
5 27 84.60 50.40 0.00 15.65 284.3 Peak 1st and 2nd instars nymphs
5 28 77.40 48.70 0.00 11.53 295.8
5 29 70.70 50.40 0.00 8.74 304.6
5 30 61.90 51.90 0.00 4.90 309.5
5 31 73.50 49.30 0.00 9.79 319.3
6 1 68.30 55.70 0.00 10.00 329.3
6 2 75.30 51.90 0.00 11.60 340.9
6 3 65.20 54.00 0.00 7.60 348.5
6 4 66.60 50.20 0.00 6.66 355.1
6 5 74.80 46.50 0.00 9.70 364.8
6 6 80.50 46.60 0.00 12.48 377.3
6 7 74.50 48.70 0.02 10.11 387.4
6 8 62.20 52.40 0.50 5.30 392.7
6 9 59.30 49.80 0.17 3.01 395.7
6 10 59.50 48.80 0.48 2.92 398.6
6 11 67.10 48.30 0.00 6.41 405.0
6 12 62.60 50.40 0.00 4.75 409.8
6 13 63.90 51.10 0.03 5.60 415.4
6 14 67.40 49.40 0.00 6.83 422.2
6 15 63.20 53.30 0.23 6.25 428.5
6 16 63.70 56.60 0.05 8.15 436.6
6 17 75.70 51.90 0.00 11.80 448.4
6 18 80.20 56.50 0.00 16.35 464.8
6 19 85.60 60.30 0.00 20.95 485.7
6 20 78.70 53.80 0.00 14.25 500.0
6 21 76.00 49.10 0.00 10.96 510.9
6 22 83.40 51.30 0.00 15.39 526.3
6 23 90.30 59.60 0.00 22.95 549.3
6 24 97.10 67.60 0.00 30.35 579.6
6 25 93.10 58.70 0.00 23.90 603.5
6 26 74.70 56.00 0.00 13.35 616.9
6 27 75.80 55.90 0.00 13.85 630.7
6 28 73.80 48.20 0.00 9.63 640.4
6 29 80.50 49.20 0.00 13.21 653.6
6 30 79.10 52.10 0.00 13.60 667.2
Forecast using: 1910 CRVO PRISM_rev1_4km 2007-2016 AVERAGES Lat44.6342 Long-123.1897 DD50
Lygus bug model - Ben Simko 2000Location: 2017 CRVO CORVALLIS OR 1910 CRVO PRISM_rev1_4km 2007-2016 AVERAGES | Date | DDs | Event |
| 5-27-17 | 284 | Peak 1st and 2nd instars nymphs |
![degree-day graph of Lygus bug [alfalfa seed] Ben Simko 2000](/cgi-bin/ddplotj.pl?3757116)
