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Output from uspest.org/wea crop degree-day/phenology model program:
Heat Units and predictions of key events from daily weather data
==============================MODEL INPUTS================================
Model species/general links: sweet corn-Jubilee DS [Jubilee-direct seeded]
Type: crop
Model source/other links: Coop et al 1993, Andrews et al. 2019
Calculation method: corn growing
Lower threshold: 50 degrees Fahrenheit
Upper threshold: 86 degrees Fahrenheit
Directions for starting/BIOFIX: date of planting
Starting/BIOFIX date: 5 1
Ending date: 9 31
Model validation status: partly validated
Region of known use: Pacific Northwest
==============================EVENTS TABLE================================
1. 104 DDs after planting: First emergence from soil
2. 308 DDs after planting: 5 leaf stage
3. 445 DDs after planting: 7 leaf stage
4. 883 DDs after planting: 5 inch tassels
5. 960 DDs after planting: 10 inch tassels
6. 1005 DDs after planting: 5% silk emergence
7. 1062 DDs after planting: 50% silk emergence
8. 1145 DDs after planting: 95% silk emergence
9. 1288 DDs after planting: 50% brown silks develop
10. 1412 DDs after planting: 95% brown silks develop
11. 1539 DDs after planting: Fresh market harvest
12. 1597 DDs after planting: Processing market harvest
==============================MODEL OUTPUT================================
Weather station: 2016 D9634 APRSWXNET DW9634 Tygh Valley OR Lat:45.2578 Long:-121.1406 Elev:984
mn day max min precip DD50 CUMDD50 event
-- --- ----- ----- ------ ---- ------- -------
5 1 75.00 42.00 0.00 12.50 12.5 * START *
5 2 84.00 43.00 0.00 17.00 29.5
5 3 80.00 52.00 0.00 16.00 45.5
5 4 74.00 52.00 0.00 13.00 58.5
5 5 69.00 51.00 0.00 10.00 68.5
5 6 79.00 54.00 0.00 16.50 85.0
5 7 86.00 58.00 0.00 22.00 107.0 First emergence from soil
5 8 71.00 47.00 0.00 10.50 117.5
5 9 67.00 37.00 0.00 8.50 126.0
5 10 73.00 39.00 0.00 11.50 137.5
5 11 82.00 39.00 0.00 16.00 153.5
5 12 83.00 48.00 0.00 16.50 170.0
5 13 79.00 46.00 0.00 14.50 184.5
5 14 71.00 56.00 0.00 13.50 198.0
5 15 62.00 51.00 0.00 6.50 204.5
5 16 72.00 47.00 0.00 11.00 215.5
5 17 81.00 42.00 0.00 15.50 231.0
5 18 81.00 49.00 0.00 15.50 246.5
5 19 62.00 44.00 0.00 6.00 252.5
5 20 64.00 34.00 0.00 7.00 259.5
5 21 53.00 49.00 0.00 1.50 261.0
5 22 65.00 47.00 0.00 7.50 268.5
5 23 69.00 40.00 0.00 9.50 278.0
5 24 68.00 44.00 0.00 9.00 287.0
5 25 73.00 41.00 0.00 11.50 298.5
5 26 66.00 43.00 0.00 8.00 306.5
5 27 64.00 40.00 0.00 7.00 313.5 5 leaf stage
5 28 74.00 38.00 0.00 12.00 325.5
5 29 72.00 44.00 0.00 11.00 336.5
5 30 77.00 41.00 0.00 13.50 350.0
5 31 84.00 44.00 0.00 17.00 367.0
6 1 85.00 52.00 0.00 18.50 385.5
6 2 72.00 59.00 0.00 15.50 401.0
6 3 90.00 53.00 0.00 19.50 420.5
6 4 94.00 56.00 0.00 21.00 441.5
6 5 99.00 59.00 0.00 22.50 464.0 7 leaf stage
6 6 99.00 62.00 0.00 24.00 488.0
6 7 98.00 56.00 0.00 21.00 509.0
6 8 78.00 57.00 0.00 17.50 526.5
6 9 73.00 49.00 0.00 11.50 538.0
6 10 66.00 52.00 0.00 9.00 547.0
6 11 69.00 46.00 0.00 9.50 556.5
6 12 80.00 39.00 0.00 15.00 571.5
6 13 70.00 46.00 0.00 10.00 581.5
6 14 61.00 45.00 0.00 5.50 587.0
6 15 65.00 36.00 0.00 7.50 594.5
6 16 67.00 41.00 0.00 8.50 603.0
6 17 69.00 42.00 0.00 9.50 612.5
6 18 63.00 47.00 0.00 6.50 619.0
6 19 75.00 37.00 0.00 12.50 631.5
6 20 80.00 51.00 0.00 15.50 647.0
6 21 78.00 50.00 0.00 14.00 661.0
6 22 84.00 48.00 0.00 17.00 678.0
6 23 75.00 56.00 0.00 15.50 693.5
6 24 70.00 51.00 0.00 10.50 704.0
6 25 82.00 43.00 0.00 16.00 720.0
6 26 89.00 51.00 0.00 18.50 738.5
6 27 93.00 55.00 0.00 20.50 759.0
6 28 93.00 57.00 0.00 21.50 780.5
6 29 92.00 52.00 0.00 19.00 799.5
6 30 90.00 51.00 0.00 18.50 818.0
7 1 89.00 47.00 0.00 18.00 836.0
7 2 90.00 58.00 0.00 22.00 858.0
7 3 83.00 55.00 0.00 19.00 877.0
7 4 79.00 47.00 0.00 14.50 891.5 5 inch tassels
7 5 79.00 47.00 0.00 14.50 906.0
7 6 81.00 48.00 0.00 15.50 921.5
7 7 81.00 54.00 0.00 17.50 939.0
7 8 73.00 59.00 0.00 16.00 955.0
7 9 75.00 54.00 0.00 14.50 969.5 10 inch tassels
7 10 71.00 55.00 0.00 13.00 982.5
7 11 79.00 47.00 0.00 14.50 997.0
7 12 75.00 54.00 0.00 14.50 1011.5 5% silk emergence
7 13 85.00 49.00 0.00 17.50 1029.0
7 14 90.00 48.00 0.00 18.00 1047.0
7 15 81.00 48.00 0.00 15.50 1062.5 50% silk emergence
7 16 82.00 47.00 0.00 16.00 1078.5
7 17 87.00 52.00 0.00 19.00 1097.5
7 18 80.00 58.00 0.00 19.00 1116.5
7 19 81.00 50.00 0.00 15.50 1132.0
7 20 88.00 48.00 0.00 18.00 1150.0 95% silk emergence
7 21 91.00 55.00 0.00 20.50 1170.5
7 22 80.00 57.00 0.00 18.50 1189.0
7 23 85.00 48.00 0.00 17.50 1206.5
7 24 93.00 49.00 0.00 18.00 1224.5
7 25 96.00 59.00 0.00 22.50 1247.0
7 26 94.00 58.00 0.00 22.00 1269.0
7 27 95.00 55.00 0.00 20.50 1289.5 50% brown silks develop
7 28 100.00 58.00 0.00 22.00 1311.5
7 29 101.00 63.00 0.00 24.50 1336.0
7 30 92.00 58.00 0.00 22.00 1358.0
7 31 86.00 48.00 0.00 18.00 1376.0
8 1 91.00 48.00 0.00 18.00 1394.0
8 2 74.00 51.00 0.00 12.50 1406.5
8 3 86.00 47.00 0.00 18.00 1424.5 95% brown silks develop
8 4 93.00 52.00 0.00 19.00 1443.5
8 5 91.00 56.00 0.00 21.00 1464.5
8 6 87.00 48.00 0.00 18.00 1482.5
8 7 77.00 49.00 0.00 13.50 1496.0
8 8 73.00 47.00 0.00 11.50 1507.5
8 9 75.00 55.00 0.00 15.00 1522.5
8 10 85.00 47.00 0.00 17.50 1540.0 Fresh market harvest
8 11 92.00 52.00 0.00 19.00 1559.0
8 12 97.00 56.00 0.00 21.00 1580.0
8 13 98.00 59.00 0.00 22.50 1602.5 Processing market harvest
8 14 96.00 58.00 0.00 22.00 1624.5
8 15 95.00 51.00 0.00 18.50 1643.0
8 16 96.00 53.00 0.00 19.50 1662.5
8 17 94.00 54.00 0.00 20.00 1682.5
8 18 99.00 56.00 0.00 21.00 1703.5
8 19 89.00 62.00 0.00 24.00 1727.5
8 20 98.00 54.00 0.00 20.00 1747.5
8 21 90.00 57.00 0.00 21.50 1769.0
8 22 80.00 49.00 0.00 15.00 1784.0
8 23 85.00 45.00 0.00 17.50 1801.5
8 24 87.00 51.00 0.00 18.50 1820.0
8 25 89.00 51.00 0.00 18.50 1838.5
8 26 92.00 52.00 0.00 19.00 1857.5
8 27 89.00 56.00 0.00 21.00 1878.5
8 28 91.00 57.00 0.00 21.50 1900.0
8 29 93.00 57.00 0.00 21.50 1921.5
8 30 80.00 57.00 0.00 18.50 1940.0
8 31 83.00 47.00 0.00 16.50 1956.5
9 1 71.00 54.00 0.00 12.50 1969.0
9 2 73.00 54.00 0.00 13.50 1982.5
9 3 70.00 43.00 0.00 10.00 1992.5
9 4 72.00 41.00 0.00 11.00 2003.5
9 5 76.00 40.00 0.00 13.00 2016.5
9 6 73.00 52.00 0.00 12.50 2029.0
9 7 78.00 48.00 0.00 14.00 2043.0
9 8 80.00 44.00 0.00 15.00 2058.0
9 9 80.00 41.00 0.00 15.00 2073.0
9 10 92.00 43.00 0.00 18.00 2091.0
9 11 76.00 51.00 0.00 13.50 2104.5
9 12 72.00 43.00 0.00 11.00 2115.5
9 13 73.00 40.00 0.00 11.50 2127.0
9 14 82.00 36.00 0.00 16.00 2143.0
9 15 86.00 45.00 0.00 18.00 2161.0
9 16 88.00 46.00 0.00 18.00 2179.0
9 17 73.00 58.00 0.00 15.50 2194.5
9 18 71.00 52.00 0.00 11.50 2206.0
9 19 66.00 44.00 0.00 8.00 2214.0
9 20 71.00 45.00 0.00 10.50 2224.5
9 21 70.00 39.00 0.00 10.00 2234.5
9 22 70.00 41.00 0.00 10.00 2244.5
9 23 64.00 40.00 0.00 7.00 2251.5
9 24 73.00 38.00 0.00 11.50 2263.0
9 25 87.00 44.00 0.00 18.00 2281.0
9 26 90.00 49.00 0.00 18.00 2299.0
9 27 83.00 52.00 0.00 17.50 2316.5
9 28 81.00 47.00 0.00 15.50 2332.0
9 29 80.00 48.00 0.00 15.00 2347.0
9 30 73.00 47.00 0.00 11.50 2358.5
Forecast using: 1910 D9634 PRISM_rev1_4km 2006-2015 AVERAGES Lat45.2578 Long-121.1406 DD50
sweet corn-Jubilee DS model - Coop et al 1993Location: 2016 D9634 DW9634 Tygh Valley 1910 D9634 PRISM_rev1_4km 2006-2015 AVERAGES | Date | DDs | Event |
| 5-7-16 | 107 | First emergence from soil |
| 5-27-16 | 314 | 5 leaf stage |
| 6-5-16 | 464 | 7 leaf stage |
| 7-4-16 | 892 | 5 inch tassels |
| 7-9-16 | 970 | 10 inch tassels |
| 7-12-16 | 1012 | 5% silk emergence |
| 7-15-16 | 1062 | 50% silk emergence |
| 7-20-16 | 1150 | 95% silk emergence |
| 7-27-16 | 1290 | 50% brown silks develop |
| 8-3-16 | 1424 | 95% brown silks develop |
| 8-10-16 | 1540 | Fresh market harvest |
| 8-13-16 | 1602 | Processing market harvest |
![degree-day graph of sweet corn-Jubilee DS [Jubilee-direct seeded] Coop et al 1993](/cgi-bin/ddplotj.pl?3269961)
