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Instructions:  To determine amount to irrigate; add daily ET for each day since your  7/23/2014
last irrigation or significant rainfall…..(look below table for more info).   Today is    7/23/2014
Estimated Crop Water Use (ET)   This Year starts on  1/1/2014
    Daily Crop Water use for  Accumulated Water Use (ET) Todays Julian Date is  204
  Date Dates Shown (inches/day)                    From Latest Day Shown                      
Crop          Planted 07/22 07/21 07/20 07/19 2day 3day 4day 5day 7day
Moravian 69 04/05 0.14 0.11 0.10 0.09 0.24 0.34 0.43 0.56 0.79  
Moravian 69 04/20 0.24 0.18 0.16 0.15 0.42 0.58 0.73 0.93 1.27
Moravian 69 05/05 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
Red Wheat 04/05 0.17 0.13 0.12 0.11 0.30 0.42 0.53 0.67 0.95
Red Wheat 04/20 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
Red Wheat 05/05 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
White Wheat 04/05 0.22 0.16 0.15 0.14 0.38 0.53 0.66 0.84 1.17
White Wheat 04/20 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
White Wheat 05/05 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
Winter Wheat 10/01 0.11 0.08 0.08 0.07 0.19 0.27 0.34 0.43 0.61
Norkotah Potato 04/25 0.28 0.20 0.17 0.16 0.47 0.65 0.81 1.01 1.37
Norkotah Potato 05/05 0.28 0.20 0.17 0.16 0.47 0.65 0.81 1.01 1.37
Centennial Potato 05/05 0.26 0.19 0.17 0.15 0.45 0.62 0.77 0.96 1.31
Nugget Potato 04/25 0.28 0.20 0.17 0.16 0.47 0.65 0.81 1.01 1.37
Nugget Potato 05/05 0.25 0.18 0.16 0.14 0.43 0.59 0.73 0.92 1.25
Alfalfa Estab. 0.30 0.22 0.19 0.17 0.52 0.71 0.88 1.10 1.50
Lawngrass  Estab. 0.25 0.18 0.16 0.14 0.43 0.59 0.73 0.92 1.25
For the latest recorded message, call 754-3494 extension 38 for La Jara, x40 (Center),  and x36 (Center #2). Use                    
the crop maturity and planting date closest to your own.  The Internet address for this table is: 
http://www.slvet.colostate.edu
Agronomist, Colorado State University Extension.  For information on using the data,
call 754-3494 x26 or e-mail ahouser@lamar.colostate.edu
Note:  Weather stations used for ET calculations are located at 
Center (SLV Research Center), Center02 (7 mi NE of Center),
 and La Jara.  Use the weather station closest to the field for which you want the ET (crop water use).
Instructions:  To determine amount to irrigate; add daily ET for each day since your 
last irrigation or significant rainfall..  
Instructions:  Add daily evapotranspiration (ET) for each day since your last irrigation.  
This is the amount of water the crop has used. This amount plus 10-20% for efficiency must be added.  
Totals for two, three, four, five, and 7-days are added for you. 
         Rainfall is not included.  Subtract effective rainfall for each individual field. What is presented is 
the net amount of irrigation needed.  Add 10 to 20% for irrigation inefficiency.  You might add 20% for high  
pressure overhead sprinklers and add at least 10% for low pressure drop nozzles.  In the early season, do 
not irrigate until the amount needed is at least 0.50 inches unless you are trying to keep the surface wet for  
emergence. Irrigating with small amounts wastes water as most of the water is lost to soil evaporation.
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