| <html><body><PRE> |
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| Instructions: To determine amount to irrigate; add daily
ET for each day since your |
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irrigation or significant rainfall…..(look below table for more info). |
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| Growing Degree-days for small grains(32d) planted Apr 10 |
4146 |
vs.30 yr Avg = |
3695 |
112.2% |
% Avg |
| Growing
Degree-days for potatoes (45 d) planted May 5 = |
2140 |
vs.30 yr Avg = |
1739 |
123.0% |
% Avg |
| Estimated Crop Water Use (ET) |
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| Weather
Data from SLV Research Center Extension Office |
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Daily Crop Water use for |
Accumulated Water Use (ET) |
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Date |
Dates Shown
(inches/day) |
From Latest Day Shown |
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| Crop |
Planted |
09/15 |
09/14 |
09/13 |
09/12 |
2day |
3day |
4day |
5day |
7day |
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| Moravian 69 |
04/10 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Moravian 69 |
04/20 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Moravian 69 |
05/05 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Early Wheat |
04/10 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Early Wheat |
04/20 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Early Wheat |
05/05 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| White Wheat |
04/10 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| White Wheat |
04/20 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| White Wheat |
05/05 |
0.00 |
0.00 |
0.00 |
0.03 |
0.00 |
0.00 |
0.03 |
0.06 |
0.15 |
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| Winter Wheat |
10/01 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Norkotah Potato |
04/25 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Norkotah Potato |
05/05 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Centennial Potato |
05/05 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Nugget Potato |
04/25 |
0.00 |
0.00 |
0.00 |
0.07 |
0.00 |
0.00 |
0.07 |
0.15 |
0.34 |
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| Nugget Potato |
05/05 |
0.11 |
0.05 |
0.09 |
0.11 |
0.16 |
0.25 |
0.36 |
0.48 |
0.76 |
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| Alfalfa |
Estab. |
0.16 |
0.06 |
0.12 |
0.15 |
0.22 |
0.35 |
0.50 |
0.67 |
1.03 |
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| Canola Early |
05/05 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
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| Canola Late |
05/20 |
0.00 |
0.00 |
0.00 |
0.05 |
0.00 |
0.00 |
0.05 |
0.12 |
0.27 |
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| Lawngrass |
Estab. |
0.13 |
0.05 |
0.10 |
0.12 |
0.19 |
0.29 |
0.41 |
0.56 |
0.86 |
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| For the
latest recorded message, call 754-3494 extension 40 (Center), Ext 38 for
LaJara and Ext 36 |
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| for Center
#2. Use the crop maturity and planting
date closest to your own. The Internet
address is: |
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| http://www.slvet.colostate.edu |
This information provided by Andrew Houser
& Robert Davidson, |
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| SLV Research Ctr |
Colorado
State University. For information on using the data, |
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| call
754-3496 x26 or e-mail: |
ahouser@lamar.colostate.edu |
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| Note: Weather stations used for ET calculations
are located at |
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| Center (SLV
Research Center), Center02 (7 mi NE of Center), |
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| Blanca and La
Jara. Use the weather station closest to the
field for which you want the ET (crop water use). |
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| Instructions: To determine amount to irrigate; add daily
ET for each day since your |
| last irrigation or
significant rainfall.. |
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| Instructions: Add daily evapotranspiration (ET) for each
day since your last irrigation. |
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| This
is the amount of water the crop has used. This amount plus 10-20% for
efficiency must be added. |
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| Totals
for two, three, four, five, and 7-days are added for you. |
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| Rainfall is not included. Subtract effective rainfall for each individual field. What is presented is |
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net amount of irrigation needed. Add
10 to 20% for irrigation inefficiency.
You might add 20% for high |
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| pressure
overhead sprinklers and add at least 10% for low pressure drop nozzles. In the early season, do |
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irrigate until the amount needed is at least 0.50 inches unless you are
trying to keep the surface wet for |
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| emergence.
Irrigating with small amounts wastes water as most of the water is lost to
soil evaporation. |
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| </PRE></body></html> |
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