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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: sunflower early dwarf hybrds
Type: crop
Model source/other links: Miller MSU, Miller et al. 2001
Calculation method: simp avg/grow
Lower threshold: 32 degrees Fahrenheit
Setting upper threshold to: 130 F (default)
Directions for starting/BIOFIX: planting date
No starting/BIOFIX date, set to: default date 4 1
Ending date: 7 0
Model validation status: partly validated
Region of known use: Montana
==============================EVENTS TABLE================================
1. 305 DD after biofix 0.9-germination: shoot breaks through soil
2. 372 DD after biofix 1.1-1st true leaves unfolded
3. 1049 DD after biofix 3.1-internode dirctly below base of inflorescence elongates .5 to 2 cm above nearest leaf
4. 1726 DD after biofix 5.1-inflorescence begins to open, small ray florets just visible
5. 1997 DD after biofix 5.9-most flower buds in head visible, bud not in anthesis. Ray florets have visible petals
6. 2200 DD after biofix 6.5-50% of flowers on head visible
7. 3012 DD after biofix 8.9-thresh when seed moisture is 12 to 15%
8. 3113 DD after biofix 9.2-bracts become yellow and brown on back of head
9. 3283 DD after biofix 9.7-head completely dried down for threshing
==============================MODEL OUTPUT================================
Weather station: 2017 KSJN METAR St. Johns Industrial A AZ Lat:34.5181 Long:-109.3792 Elev:5732
mn day max min precip DD32 CUMDD32 event
-- --- ----- ----- ------ ---- ------- -------
4 1 53.10 23.00 0.01 6.05 6.0 * START *
4 2 64.90 21.20 0.00 11.05 17.1
4 3 66.90 33.10 0.07 18.00 35.1
4 4 65.20 30.80 0.00 16.00 51.1 Hx Hn
4 5 66.20 42.10 0.00 22.15 73.2
4 6 75.90 28.00 0.00 19.95 93.2
4 7 78.80 35.60 0.00 25.20 118.4
4 8 75.20 39.00 0.00 25.10 143.5
4 9 66.20 37.40 0.00 19.80 163.3
4 10 70.00 26.10 0.00 16.05 179.4
4 11 77.00 26.10 0.00 19.55 198.9
4 12 78.80 35.10 0.00 24.95 223.9
4 13 81.00 32.00 0.00 24.50 248.4
4 14 79.00 33.10 0.00 24.05 272.4
4 15 77.00 30.20 0.00 21.60 294.0
4 16 77.00 33.80 0.00 23.40 317.4 0.9-germination: shoot breaks through soil
4 17 80.60 39.00 0.00 27.80 345.2
4 18 82.40 39.20 0.00 28.80 374.0 1.1-1st true leaves unfolded
4 19 78.10 50.00 0.00 32.05 406.1
4 20 78.80 35.10 0.00 24.95 431.0
4 21 75.20 39.20 0.00 25.20 456.2
4 22 77.00 33.10 0.00 23.05 479.3
4 23 82.40 35.10 0.00 26.75 506.0
4 24 77.00 41.00 0.00 27.00 533.0
4 25 64.90 37.90 0.10 19.40 552.4
4 26 71.60 30.20 0.00 18.90 571.3
4 27 75.90 53.60 0.00 32.75 604.0
4 28 55.90 35.10 0.28 13.50 617.5
4 29 52.00 28.90 0.01 8.45 626.0
4 30 66.20 28.40 0.00 15.30 641.3
5 1 75.90 35.60 0.00 23.75 665.0
5 2 81.00 44.60 0.00 30.80 695.8
5 3 78.80 44.60 0.00 29.70 725.5
5 4 84.20 35.60 0.00 27.90 753.4
5 5 88.00 41.00 0.00 32.50 785.9
5 6 84.90 51.10 0.00 36.00 821.9
5 7 78.80 48.00 0.00 31.40 853.3
5 8 73.90 42.80 0.01 26.35 879.7
5 9 66.90 35.60 0.06 19.25 898.9
5 10 59.00 33.80 0.04 14.40 913.3
5 11 75.20 42.80 0.00 27.00 940.3
5 12 84.20 42.80 0.00 31.50 971.8
5 13 84.20 44.10 0.00 32.15 1004.0
5 14 79.00 42.80 0.00 28.90 1032.9
5 15 79.00 44.10 0.00 29.55 1062.4 3.1-internode dirctly below base of inflorescence elongates .5 to 2 cm above nearest leaf
5 16 62.60 37.90 0.00 18.25 1080.7
5 17 70.00 41.00 0.16 23.50 1104.2
5 18 64.40 37.40 0.06 18.90 1123.1
5 19 63.00 37.00 0.33 18.00 1141.1
5 20 73.40 32.00 0.00 20.70 1161.8
5 21 80.60 35.60 0.00 26.10 1187.9
5 22 80.60 39.00 0.00 27.80 1215.7
5 23 82.40 39.20 0.00 28.80 1244.5
5 24 90.00 42.80 0.00 34.40 1278.9
5 25 82.90 57.20 0.00 38.05 1316.9
5 26 82.40 53.60 0.00 36.00 1352.9
5 27 82.40 39.20 0.00 28.80 1381.7
5 28 84.90 41.00 0.00 30.95 1412.7
5 29 84.90 46.00 0.00 33.45 1446.1
5 30 82.90 44.60 0.00 31.75 1477.9
5 31 75.20 50.00 0.01 30.60 1508.5
6 1 82.40 46.00 0.04 32.20 1540.7
6 2 84.20 48.20 0.00 34.20 1574.9
6 3 89.60 46.40 0.00 36.00 1610.9
6 4 93.20 53.60 0.00 41.40 1652.3
6 5 93.00 59.00 0.00 44.00 1696.3
6 6 93.90 62.10 0.00 46.00 1742.3 5.1-inflorescence begins to open, small ray florets just visible
6 7 91.90 57.20 0.02 42.55 1784.8
6 8 91.90 57.20 0.00 42.55 1827.4
6 9 91.90 53.60 0.00 40.75 1868.1
6 10 90.00 51.10 0.00 38.55 1906.7
6 11 89.60 51.10 0.00 38.35 1945.0
6 12 84.20 48.00 0.00 34.10 1979.1
6 13 81.00 44.10 0.00 30.55 2009.7 5.9-most flower buds in head visible, bud not in anthesis. Ray florets have visible petals
6 14 91.90 39.20 0.00 33.55 2043.2
6 15 95.00 48.20 0.00 39.60 2082.8
6 16 96.80 55.00 0.00 43.90 2126.7
6 17 97.00 59.00 0.00 46.00 2172.7
6 18 100.40 59.00 0.00 47.70 2220.4 6.5-50% of flowers on head visible
6 19 102.90 59.00 0.00 48.95 2269.4
6 20 102.90 64.00 0.00 51.45 2320.8
6 21 102.90 59.00 0.00 48.95 2369.8
6 22 102.00 71.60 0.00 54.80 2424.6
6 23 99.00 64.00 0.00 49.50 2474.1
6 24 100.90 57.20 0.00 47.05 2521.1
6 25 95.00 60.80 0.00 45.90 2567.0
6 26 97.00 57.00 0.00 45.00 2612.0
6 27 95.00 64.40 0.00 47.70 2659.7
6 28 93.90 64.00 0.00 46.95 2706.7
6 29 95.00 55.40 0.00 43.20 2749.9
6 30 95.00 55.00 0.00 43.00 2792.9
Forecast using: 1910 KSJN PRISM_rev1_4km 2007-2016 AVERAGES Lat34.5181 Long-109.3792 DD50
sunflower early dwarf hybrds Miller MSULocation: 2017 KSJN St. Johns Industrial 1910 KSJN PRISM_rev1_4km 2007-2016 AVERAGES | Date | DDs | Event |
| 4-16-17 | 317 | 0.9-germination: shoot breaks through soil |
| 4-18-17 | 374 | 1.1-1st true leaves unfolded |
| 5-15-17 | 1062 | 3.1-internode dirctly below base of inflorescence elongates .5 to 2 cm above nearest leaf |
| 6-6-17 | 1742 | 5.1-inflorescence begins to open, small ray florets just visible |
| 6-13-17 | 2010 | 5.9-most flower buds in head visible, bud not in anthesis. Ray florets have visible petals |
| 6-18-17 | 2220 | 6.5-50% of flowers on head visible |
