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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: wheat (Hard Red)
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. 290 DD after biofix 0.9-germination: coleoptyle breaks through soil
2. 350 DD after biofix 1.1-1st leaf unfolds
3. 680 DD after biofix 2.1-1st tiller visible
4. 1000 DD after biofix 3.1-1st node detectable
5. 1320 DD after biofix 4.1-flag leaf sheath extended
6. 1650 DD after biofix 5.1-tip of inflor. emerged, 1st spiklet just visible
7. 1960 DD after biofix 6.1-1st anthers of flowers visible
8. 2290 DD after biofix 7.1-1st grains reach half of final size
9. 2740 DD after biofix 8.5-soft dough stage grain development
10. 2930 DD after biofix 9.2-grains ripe and hard
==============================MODEL OUTPUT================================
Weather station: 2017 D6835 APRSWXNET DW6835 Antelope CA Lat38.7081 Long:-121.3411 Elev:155
mn day max min precip DD32 CUMDD32 event
-- --- ----- ----- ------ ---- ------- -------
4 1 79.00 47.00 0.00 31.00 31.0 * START *
4 2 81.00 53.00 0.00 35.00 66.0
4 3 75.00 50.00 0.00 30.50 96.5
4 4 70.30 43.50 0.00 24.90 121.4 Hx Hn
4 5 73.70 58.00 0.00 33.85 155.2 Vx
4 6 63.00 52.30 1.39 25.65 180.9 Vn
4 7 62.00 47.00 1.76 22.50 203.4
4 8 58.00 43.00 0.26 18.50 221.9
4 9 64.00 39.00 0.00 19.50 241.4
4 10 69.00 42.00 0.00 23.50 264.9
4 11 68.00 54.00 0.12 29.00 293.9 0.9-germination: coleoptyle breaks through soil
4 12 66.00 52.00 0.27 27.00 320.9
4 13 63.00 47.00 0.26 23.00 343.9
4 14 64.00 39.00 0.00 19.50 363.4 1.1-1st leaf unfolds
4 15 70.00 39.00 0.00 22.50 385.9
4 16 62.00 50.00 0.61 24.00 409.9
4 17 63.00 54.00 0.15 26.50 436.4
4 18 71.00 53.00 0.11 30.00 466.4
4 19 70.00 48.00 0.14 27.00 493.4
4 20 70.00 51.00 0.14 28.50 521.9
4 21 78.00 47.00 0.00 30.50 552.4
4 22 75.00 53.00 0.00 32.00 584.4
4 23 74.00 50.00 0.00 30.00 614.4
4 24 65.00 52.00 0.00 26.50 640.9
4 25 72.00 50.00 0.00 29.00 669.9
4 26 68.00 56.00 0.00 30.00 699.9 2.1-1st tiller visible
4 27 75.00 52.00 0.00 31.50 731.4
4 28 73.00 48.00 0.00 28.50 759.9
4 29 81.00 46.00 0.00 31.50 791.4
4 30 84.00 51.00 0.00 35.50 826.9
5 1 90.00 55.00 0.00 40.50 867.4
5 2 91.00 64.00 0.00 45.50 912.9
5 3 95.00 63.00 0.00 47.00 959.9
5 4 91.00 64.00 0.00 45.50 1005.4 3.1-1st node detectable
5 5 83.00 54.00 0.00 36.50 1041.9
5 6 70.00 49.00 0.00 27.50 1069.4
5 7 77.00 52.00 0.00 32.50 1101.9
5 8 86.00 55.00 0.00 38.50 1140.4
5 9 92.00 57.00 0.00 42.50 1182.9
5 10 73.00 53.00 0.00 31.00 1213.9
5 11 75.00 50.00 0.00 30.50 1244.4
5 12 71.00 48.00 0.00 27.50 1271.9
5 13 70.00 45.00 0.00 25.50 1297.4
5 14 74.00 48.00 0.00 29.00 1326.4 4.1-flag leaf sheath extended
5 15 79.00 48.00 0.00 31.50 1357.9
5 16 65.00 50.00 0.00 25.50 1383.4
5 17 76.00 49.00 0.00 30.50 1413.9
5 18 85.00 50.00 0.00 35.50 1449.4
5 19 93.30 52.20 0.00 40.75 1490.2 Px Pn
5 20 95.60 53.10 0.00 42.35 1532.5 Px Pn
5 21 96.00 59.30 0.00 45.65 1578.2 Pn
5 22 99.00 64.00 0.00 49.50 1627.7
5 23 100.00 66.00 0.00 51.00 1678.7 5.1-tip of inflor. emerged, 1st spiklet just visible
5 24 84.00 57.00 0.00 38.50 1717.2
5 25 73.00 54.00 0.00 31.50 1748.7
5 26 73.00 52.00 0.00 30.50 1779.2
5 27 82.00 53.00 0.00 35.50 1814.7
5 28 89.00 55.00 0.00 40.00 1854.7
5 29 88.00 56.00 0.00 40.00 1894.7
5 30 82.00 53.00 0.18 35.50 1930.2
5 31 82.00 55.00 0.18 36.50 1966.7 6.1-1st anthers of flowers visible
6 1 87.00 57.00 0.00 40.00 2006.7
6 2 92.00 58.00 0.00 43.00 2049.7
6 3 93.00 62.00 0.00 45.50 2095.2
6 4 91.00 59.00 0.00 43.00 2138.2
6 5 92.00 55.00 0.00 41.50 2179.7
6 6 94.00 61.00 0.00 45.50 2225.2
6 7 82.00 58.00 0.32 38.00 2263.2
6 8 73.00 51.00 0.02 30.00 2293.2 7.1-1st grains reach half of final size
6 9 77.00 56.00 0.00 34.50 2327.7
6 10 77.00 51.00 0.00 32.00 2359.7
6 11 70.00 50.00 0.00 28.00 2387.7
6 12 76.00 52.00 0.00 32.00 2419.7
6 13 83.00 52.00 0.00 35.50 2455.2
6 14 92.00 58.00 0.00 43.00 2498.2
6 15 94.00 60.00 0.00 45.00 2543.2
6 16 100.00 66.00 0.00 51.00 2594.2
6 17 100.00 72.00 0.00 54.00 2648.2
6 18 106.60 73.00 0.00 57.80 2706.0 Px Pn
6 19 109.00 78.00 0.00 61.50 2767.5 8.5-soft dough stage grain development
6 20 108.00 75.00 0.00 59.50 2827.0
6 21 106.00 71.00 0.00 56.50 2883.5
6 22 108.00 64.00 0.00 54.00 2937.5 9.2-grains ripe and hard
6 23 104.00 72.00 0.00 56.00 2993.5
6 24 99.00 64.00 0.00 49.50 3043.0
6 25 94.00 61.00 0.00 45.50 3088.5
6 26 87.00 58.00 0.00 40.50 3129.0
6 27 89.00 58.00 0.00 41.50 3170.5
6 28 94.00 57.00 0.00 43.50 3214.0
6 29 96.00 58.00 0.00 45.00 3259.0
6 30 96.00 58.00 0.00 45.00 3304.0
Forecast using: 1910 D6835 PRISM_rev1_4km 2007-2016 AVERAGES Lat38.7081 Long-121.3411 DD50
wheat (Hard Red) Miller MSULocation: 2017 D6835 DW6835 Antelope CA 1910 D6835 PRISM_rev1_4km 2007-2016 AVERAGES Date | DDs | Event |
4-11-17 | 294 | 0.9-germination: coleoptyle breaks through soil |
4-14-17 | 363 | 1.1-1st leaf unfolds |
4-26-17 | 700 | 2.1-1st tiller visible |
5-4-17 | 1005 | 3.1-1st node detectable |
5-14-17 | 1326 | 4.1-flag leaf sheath extended |
5-23-17 | 1679 | 5.1-tip of inflor. emerged, 1st spiklet just visible |
5-31-17 | 1967 | 6.1-1st anthers of flowers visible |
6-8-17 | 2293 | 7.1-1st grains reach half of final size |
6-19-17 | 2767 | 8.5-soft dough stage grain development |
6-22-17 | 2937 | 9.2-grains ripe and hard |