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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: threecornered alfalfa hopper [legumes, grapes]
Type: insect
Model source/other links: OSU OIPMC model analysis
Calculation method: single sine
Lower threshold: 52 degrees Fahrenheit
Upper threshold: 100 degrees Fahrenheit
Directions for starting/BIOFIX: calendar date
No starting/BIOFIX date, set to: default date 1 1
Ending date: 7 0
Model validation status: under development - new pest of winegrapes
Region of known use: data collected in TX, ARK, LA, SC, KY, GA, CA
==============================EVENTS TABLE================================
1. 450 DDs after Jan 1: OW adult first oviposition
2. 780 DDs after Jan 1: OW adult peak OV
3. 1180 DDs after Jan 1: F1 late instar nymphs
4. 1430 DDs after Jan 1: First F1 adults
5. 2180 DDs after Jan 1: F1 peak adults, also F2 young nymphs
6. 2580 DDs after Jan 1: F2 late instar nymphs
7. 2830 DDs after Jan 1: First F2 adults
8. 3580 DDs after Jan 1: F2 peak adults, also F3 young nymphs (warmer climates only)
9. 4230 DDs after Jan 1: First F3 adults (warmer climates only)
==============================MODEL OUTPUT================================
Weather station: 2017 D9747 APRSWXNET DW9747 Huntsville AL Lat34.6178 Long:-86.5303 Elev:725
mn day max min precip DD52 CUMDD52 event
-- --- ----- ----- ------ ---- ------- -------
1 1 57.00 46.00 0.49 1.51 1.5 * START *
1 2 62.00 56.00 0.43 7.00 8.5
1 3 64.00 56.00 0.08 8.00 16.5
1 4 56.00 30.00 0.00 0.68 17.2
1 5 42.00 29.00 0.00 0.00 17.2
1 6 32.00 25.00 0.00 0.00 17.2
1 7 49.50 30.10 0.00 0.00 17.2 Hx Hn
1 8 32.00 13.00 0.00 0.00 17.2
1 9 47.00 25.00 0.00 0.00 17.2
1 10 61.00 44.00 0.00 2.96 20.1
1 11 50.10 31.70 0.00 0.00 20.1 Hx Hn
1 12 48.80 30.40 0.00 0.00 20.1 Hx Hn
1 13 50.40 31.40 0.00 0.00 20.1 Hx Hn
1 14 75.00 27.70 0.00 7.21 27.4 Hn
1 15 70.00 54.00 0.00 10.00 37.4
1 16 72.00 55.00 0.00 11.50 48.9
1 17 71.00 62.00 0.06 14.50 63.4
1 18 62.00 54.00 0.04 6.00 69.4
1 19 64.00 55.00 1.46 7.50 76.9
1 20 71.00 58.00 0.01 12.50 89.4
1 21 66.00 57.00 0.96 9.50 98.9
1 22 66.00 50.00 2.33 6.30 105.2
1 23 60.00 47.00 0.00 2.87 108.0
1 24 58.00 41.00 0.00 1.57 109.6
1 25 64.00 49.00 0.28 5.08 114.7
1 26 58.00 39.00 0.00 1.48 116.2
1 27 44.00 35.00 0.00 0.00 116.2
1 28 53.00 29.00 0.00 0.09 116.3
1 29 47.00 38.00 0.00 0.00 116.3
1 30 56.00 32.00 0.00 0.71 117.0
1 31 71.00 44.00 0.00 7.41 124.4
2 1 69.00 52.00 0.00 8.50 132.9
2 2 56.00 41.00 0.03 0.90 133.8
2 3 45.00 32.00 0.00 0.00 133.8
2 4 51.00 24.00 0.23 0.00 133.8
2 5 52.00 42.00 0.00 0.00 133.8
2 6 63.00 48.00 0.07 4.40 138.2
2 7 63.00 57.00 0.19 8.00 146.2
2 8 68.00 45.00 0.19 6.19 152.4
2 9 45.00 33.00 0.00 0.00 152.4
2 10 66.00 30.00 0.00 3.87 156.2
2 11 69.00 58.00 0.00 11.50 167.7
2 12 74.00 52.00 0.02 11.00 178.7
2 13 61.00 37.00 0.00 2.44 181.2
2 14 61.00 37.00 0.29 2.44 183.6
2 15 53.00 40.00 0.28 0.12 183.7
2 16 60.00 31.00 0.00 1.84 185.6
2 17 68.00 42.00 0.01 5.75 191.3
2 18 58.00 50.00 0.01 2.44 193.8
2 19 72.00 50.00 0.00 9.26 203.0
2 20 75.00 51.00 0.00 11.09 214.1
2 21 63.00 58.00 0.15 8.50 222.6
2 22 69.00 59.00 0.00 12.00 234.6
2 23 75.00 58.00 0.00 14.50 249.1
2 24 80.00 61.00 0.36 18.50 267.6
2 25 63.00 40.00 0.36 3.41 271.0
2 26 62.00 30.00 0.25 2.46 273.5
2 27 58.00 46.00 0.80 1.91 275.4
2 28 67.00 53.00 0.37 8.00 283.4
3 1 74.00 52.00 0.05 11.00 294.4
3 2 57.00 39.00 0.00 1.15 295.5
3 3 54.00 36.00 0.00 0.29 295.8
3 4 67.00 35.00 0.00 4.60 300.4
3 5 65.00 48.00 0.00 5.34 305.8
3 6 73.00 59.00 0.02 14.00 319.8
3 7 65.00 53.00 0.73 7.00 326.8
3 8 70.00 40.00 0.00 6.37 333.1
3 9 77.00 41.00 0.87 9.67 342.8
3 10 68.00 44.00 0.00 6.03 348.8
3 11 45.00 36.00 0.02 0.00 348.8
3 12 57.00 33.00 0.00 0.99 349.8
3 13 45.00 39.00 0.26 0.00 349.8
3 14 42.00 30.00 0.01 0.00 349.8
3 15 42.00 25.00 0.00 0.00 349.8
3 16 52.00 25.00 0.00 0.00 349.8
3 17 66.00 44.00 0.64 5.13 355.0
3 18 71.00 52.00 0.64 9.50 364.5
3 19 64.00 42.00 0.00 4.02 368.5
3 20 82.00 47.00 0.00 13.31 381.8
3 21 85.00 60.00 0.04 20.50 402.3
3 22 64.00 50.00 0.00 5.33 407.6
3 23 76.00 48.00 0.00 10.65 418.3
3 24 76.00 60.00 0.00 16.00 434.3
3 25 76.00 58.00 1.14 15.00 449.3
3 26 73.00 58.00 0.02 13.50 462.8 OW adult first oviposition
3 27 80.00 60.00 1.79 18.00 480.8
3 28 76.00 58.00 0.07 15.00 495.8
3 29 85.00 60.00 0.00 20.50 516.3
3 30 78.00 64.00 0.16 19.00 535.3
3 31 68.00 52.00 0.16 8.00 543.3
4 1 71.00 48.00 0.00 8.22 551.5
4 2 83.00 48.00 1.69 14.08 565.6
4 3 75.00 59.00 1.69 15.00 580.6
4 4 72.60 48.40 0.00 9.10 589.7 Hx Hn
4 5 79.00 43.20 0.00 11.00 600.7 Hn
4 6 57.00 45.90 0.00 1.50 602.2 Vn
4 7 64.00 43.00 0.00 4.13 606.3
4 8 70.00 40.00 0.00 6.37 612.7
4 9 80.00 49.00 0.00 12.90 625.6
4 10 80.00 58.00 0.00 17.00 642.6
4 11 81.00 62.00 0.00 19.50 662.1
4 12 82.00 62.00 0.00 20.00 682.1
4 13 86.00 61.00 0.00 21.50 703.6
4 14 85.00 60.00 0.00 20.50 724.1
4 15 83.00 68.00 0.00 23.50 747.6
4 16 83.00 66.00 0.00 22.50 770.1
4 17 81.00 66.00 0.07 21.50 791.6 OW adult peak OV
4 18 82.00 65.00 0.05 21.50 813.1
4 19 83.00 65.00 0.00 22.00 835.1
4 20 84.00 67.00 0.00 23.50 858.6
4 21 84.00 68.00 0.33 24.00 882.6
4 22 78.00 63.00 0.26 18.50 901.1
4 23 64.00 52.00 0.03 6.00 907.1
4 24 65.00 52.00 0.00 6.50 913.6
4 25 77.00 52.00 0.00 12.50 926.1
4 26 81.00 62.00 0.82 19.50 945.6
4 27 75.00 61.00 0.82 16.00 961.6
4 28 85.00 60.00 0.00 20.50 982.1
4 29 88.00 71.00 0.00 27.50 1009.6
4 30 81.00 66.00 0.68 21.50 1031.1
5 1 75.00 55.00 0.45 13.00 1044.1
5 2 79.00 50.00 0.00 12.72 1056.8
5 3 82.00 55.00 0.16 16.50 1073.3
5 4 66.00 52.00 0.36 7.00 1080.3
5 5 52.00 49.00 0.16 0.00 1080.3
5 6 75.00 44.00 0.00 9.27 1089.6
5 7 74.00 51.00 0.00 10.59 1100.1
5 8 83.00 49.00 0.00 14.38 1114.5
5 9 87.00 58.00 0.00 20.50 1135.0
5 10 88.00 62.00 0.00 23.00 1158.0
5 11 84.00 66.00 0.00 23.00 1181.0 F1 late instar nymphs
5 12 76.00 68.00 0.00 20.00 1201.0
5 13 78.00 64.00 0.00 19.00 1220.0
5 14 89.00 54.00 0.00 19.50 1239.5
5 15 90.00 60.00 0.00 23.00 1262.5
5 16 92.00 62.00 0.00 25.00 1287.5
5 17 89.00 73.00 0.00 29.00 1316.5
5 18 86.00 72.00 0.00 27.00 1343.5
5 19 90.00 75.00 0.00 30.50 1374.0
5 20 90.00 67.00 0.95 26.50 1400.5
5 21 81.00 66.00 0.26 21.50 1422.0
5 22 79.00 63.00 0.24 19.00 1441.0 First F1 adults
5 23 75.00 66.00 0.25 18.50 1459.5
5 24 68.00 56.00 0.02 10.00 1469.5
5 25 76.00 56.00 0.01 14.00 1483.5
5 26 88.00 56.00 0.00 20.00 1503.5
5 27 84.00 67.00 1.41 23.50 1527.0
5 28 84.00 64.00 1.40 22.00 1549.0
5 29 82.00 67.00 0.03 22.50 1571.5
5 30 87.00 66.00 0.00 24.50 1596.0
5 31 90.00 64.00 0.00 25.00 1621.0
6 1 85.00 65.00 0.00 23.00 1644.0
6 2 87.00 70.00 0.00 26.50 1670.5
6 3 92.00 67.00 0.01 27.50 1698.0
6 4 90.00 71.00 0.58 28.50 1726.5
6 5 80.00 71.00 0.01 23.50 1750.0
6 6 84.00 71.00 0.00 25.50 1775.5
6 7 82.00 62.00 0.00 20.00 1795.5
6 8 83.00 57.00 0.00 18.00 1813.5
6 9 89.00 58.00 0.00 21.50 1835.0
6 10 91.00 63.00 0.00 25.00 1860.0
6 11 94.00 72.00 0.00 31.00 1891.0
6 12 96.00 75.00 0.00 33.50 1924.5
6 13 93.00 71.00 0.00 30.00 1954.5
6 14 96.00 71.00 0.00 31.50 1986.0
6 15 91.00 66.00 0.61 26.50 2012.5
6 16 90.00 65.00 0.00 25.50 2038.0
6 17 94.00 69.00 0.00 29.50 2067.5
6 18 91.00 71.00 0.00 29.00 2096.5
6 19 83.00 72.00 0.00 25.50 2122.0
6 20 86.00 68.00 0.00 25.00 2147.0
6 21 82.00 71.00 0.90 24.50 2171.5
6 22 76.00 70.00 0.94 21.00 2192.5 F1 peak adults, also F2 young nymphs
6 23 81.00 74.00 0.20 25.50 2218.0
6 24 88.00 71.00 0.10 27.50 2245.5
6 25 86.00 66.00 0.00 24.00 2269.5
6 26 85.00 59.00 0.00 20.00 2289.5
6 27 85.00 64.00 0.00 22.50 2312.0
6 28 92.00 68.00 0.32 28.00 2340.0
6 29 82.00 72.00 0.27 25.00 2365.0
6 30 87.00 72.00 0.08 27.50 2392.5
Extended Seasonal Forecast: NOAA NMME 7-month 1910 D9747 PRISM_rev1_4km 2012-2021
threecornered alfalfa hopper model - OSU OIPMC model analysisLocation: 2017 D9747 DW9747 Huntsville AL Extended Seasonal Forecast: NOAA NMME | Date | DDs | Event |
| 3-26-17 | 463 | OW adult first oviposition |
| 4-17-17 | 792 | OW adult peak OV |
| 5-11-17 | 1181 | F1 late instar nymphs |
| 5-22-17 | 1441 | First F1 adults |
| 6-22-17 | 2193 | F1 peak adults, also F2 young nymphs |
![degree-day graph of threecornered alfalfa hopper [legumes, grapes] OSU OIPMC model analysis](/cgi-bin/ddplotj.pl?4145054)
