| Oakes Irrigation Research Site |
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| Carrington
Research Extension Center * North Dakota State University |
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| P.O.
Box 531, Oakes, ND 58474-0531, Phone: (701) 742-2744, FAX: (701) 742-2700,
E-mail: |
Kelly.c.Cooper@ndsu.edu |
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| WEATHER
AND IRRIGATION 2016 |
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| Table 1.
Precipitation and temperature |
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| Table 2. Growing
degree units |
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| Table 3. Dates of
last and first frosts |
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| Table 4. Irrigation
water applied |
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The winter of 2015 - 2016 was
non-eventful. Temperatures followed a
typical winter in North Dakota with warm and cool temperatures through the
winter months not having extremes either way.
The amount of snow received for the winter was less than the long-term
average. Most field work and planting
dates were near seasonal averages. The
last frost in the spring was on May 17. The maximum temperature equaled or
exceeded 90°F fifteen times; five times in June, seven times in July and
three times in August. The high temperature was 97°F on July 20. Precipitation was about 1½ to 2 inches
below the long-term average in May, June and September. Precipitation was above the long-term
average in April, July, August and September.
The months of July and August nearly doubled the long‑term
average for those months. The total
rainfall for the season was about 2.75 inches above long-term average (April
to October). The mean daily
temperatures were two to four degrees above of the long-term averages for the
season except for April which was near the long-term average. The first frost was October 6 with the
first hard frost (≤ 28°F) October 7.
All crops reached maturity before frost. Growing degree units in 2016 were above the
long‑term average. |
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| Table
1. Precipitation and temperature at
the Oakes Irrigation Research Site. |
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Precipitation |
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Average daily temperatures |
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| Month |
2016 |
15-year
average |
25-year
average |
2016 |
15-year
average |
25-year
average |
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-------------------------------------°F------------------------------------- |
-------------------------------------°F------------------------------------- |
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| April |
2.87 |
1.56 |
1.54 |
43 |
44 |
43 |
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| May |
2.02 |
3.41 |
3.11 |
58 |
56 |
56 |
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| June |
2.58 |
4.70 |
4.23 |
70 |
67 |
66 |
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| July |
5.52 |
2.85 |
3.27 |
73 |
71 |
71 |
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| August |
5.06 |
2.52 |
2.28 |
71 |
69 |
69 |
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| September |
1.02 |
2.43 |
2.70 |
63 |
61 |
60 |
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| October |
3.15 |
2.13 |
2.21 |
50 |
46 |
46 |
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| Table
2. Growing degree units1 at the Oakes
Irrigation Research Site. |
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| Month |
2016 |
10-year average |
15-year average |
25-year average |
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| May |
366 |
312 |
298 |
306 |
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| June |
579 |
512 |
511 |
500 |
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| July |
683 |
654 |
654 |
632 |
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| August |
640 |
586 |
580 |
581 |
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| September |
433 |
389 |
388 |
375 |
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| Total |
2699 |
2453 |
2432 |
2395 |
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| 1Growing degree units = (Tempmax + Tempmin)/2 - 50. If Tempmax is greater than 86, then |
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| Tempmax = 86. If Tempmin is less than 50, then Tempmin =
50. Temperature is in degrees F. |
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| Table
3. Dates of last and first frosts. |
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2016 |
10-year
average |
15-year
average |
25-year
average |
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| Last frost in Spring |
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32 °F or less |
17-May |
8-May |
8-May |
5-May |
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28 °F or less |
14-May |
25-Apr |
28-Apr |
27-Apr |
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| First frost in Fall |
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32 °F or less |
6-Oct |
6-Oct |
3-Oct |
2-Oct |
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28 °F or less |
7-Oct |
12-Oct |
9-Oct |
8-Oct |
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| Frost free period (days) |
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142 |
150 |
148 |
149 |
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| Table
4. Irrigation water applied, 2016. |
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| Study |
Irrigation water applied |
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inches |
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| Dry edible bean variety trials |
9.9 |
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| Field corn hybrid performance
trial |
12.9 |
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| Onion hybrid performance trial |
11.7 |
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| Onion weed control study |
12.45 |
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| Optimum corn stover
removal for biofuel |
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| corn on corn |
12.2 |
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| corn on soybean |
12.9 |
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| soybean on corn |
12.2 |
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| Potato trials |
13.7 |
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| Sorghum |
11.9 |
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| Soybean Sclerotinia study |
15.9 |
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| Soybean studies |
11.4 |
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| Soybean variety performance
trials |
12.9 |
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| Soybean studies -
Mosaic/Summit |
12.2 |
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| Strip-till |
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| corn on corn |
12.2 |
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| corn on soybean |
11.4 |
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| soybean on corn |
12.2 |
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| Sunflower study* |
6.2 |
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| Sunflower drop nozzle study* |
6.2 |
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| Wheat |
3.0 |
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| *Received
additional irrigation via the misting system. |
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| Report 2016 |
Home Page |
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