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2009 Nebraska Water Management Demonstration Network ET Gage Data

Partners:   The Central Nebraska Public Power and Irrigation District • Natural Resources Conservation Service • University of Nebraska-Lincoln Extension • Tri-Basin Natural Resources District

To use the data from the spreadsheet:  The number in the column for the most current week divided by 7 gives your crop's average daily water use. You can use this information to schedule irrigation for the current week.

Site #10
Loomis 7 mi. north - NE1/4 Section 16-T7N-R19W, Phelps County
Date read
5/26
6/1
6/8
6/15
6/22
6/29
7/6
7/13
7/20
7/27
8/3
8/10
8/17
8/24
8/31
9/8
9/14
 
 
ET gage change for period
Date
  
0.90
0.55
1.10
1.60
1.40
1.40
1.40
1.30
0.90
1.20
1.20
1.00
1.00
0.70
0.70
    
Rainfall for period
   
0.45
2.06
2.74
1.18
0.22
0.62
1.42
0.52
0.43
1.30
0.90
0.35
0.30
0.04
0.76
    
Corn
Crop ET
Factor
Weekly Crop Water Use for Corn by Stage of Growth
V2 - 2 leaf
0.10
                                    
V4 - 4 leaf
0.18
  
0.16
0.10
                              
V5 - 6 leaf
0.35
  
0.32
0.19
0.39
                            
V8 - 8 leaf
0.51
  
0.46 
0.28
0.56
0.82
                          
V10 - 10 leaf
0.69
 
0.62 
0.38
0.76
1.10
0.97
                        
V12 - 12 leaf
0.88
    
0.48
0.97
1.41
1.23
1.23
1.23
                    
V14 - 14 leaf
1.01
    
0.56
1.11
1.62
1.41
1.41
1.41
                    
V16 - 16 leaf
1.10
        
1.76
1.54
1.54
1.54
1.43
0.99
1.32
              
R1 - silk
1.10
        
1.76
1.54
1.54
1.54
1.43
0.99
1.32
1.32
            
Blister
1.10
            
1.54
1.54
1.43
0.99
1.32
1.32
1.10
          
Dough
1.10
                
1.43
0.99
1.32
1.32
1.10
1.10
        
Beg. dent
1.10
                    
1.32
1.32
1.10
1.10
0.77
0.77
    
Black layer
0.60
                        
0.60
0.60
0.42
0.42
    
     = Observed stage of growth at site; use ET rate corresponding to crop maturity in field
Date read
5/26
6/1
6/8
6/15
6/22
6/29
7/6
7/13
7/20
7/27
8/3
8/10
8/17
8/24
8/31
9/8
9/14
 
 
ET gage change for period
Date
  
0.90
0.55
1.10
1.60
1.40
1.40
1.40
1.30
0.90
1.20
1.20
1.00
1.00
0.70
0.70
    
Rainfall for period
    
0.45
2.06
2.74
1.18
0.22
0.62
1.42
0.52
0.43
1.30
0.90
0.35
0.30
0.04
0.76
    
Soybeans
Crop ET
Factor
Weekly Crop Water Use for Soybeans by Stage of Growth
VC - cotyledons
0.10
  
0.09
0.06
0.11
                            
V1 - 1st node
0.20
  
0.18
0.11 
0.22
0.32
                          
V2 - 2nd node
0.40
  
0.36 
0.22 
0.44
0.64
0.56
                        
V3 - 3rd node
0.60
  
0.54 
0.33
0.66
0.96
0.84
0.84
0.84
0.78
                  
R1 - beg. bloom
0.90
    
 
0.99
1.44
1.26
1.26
1.26
1.17
                  
R2 - full bloom
1.10
    
 
 
1.76
1.54
1.54
1.54
1.43
0.99
1.32
              
R3 - beg. pod elongation
1.10
            
1.54
1.54
1.43
0.99
1.32
1.32
            
R4 - end pod elongation
1.10
                  
0.99
1.32
1.32
1.10
          
R5 - beg. seed enlargement
1.10
                  
0.99
1.32
1.32
1.10
1.10
        
R6 - end seed enlargement
1.10
                    
1.32
1.32
1.10
1.10
0.77
0.77
    
R7 - beg. maturity
0.90
                        
0.90
0.90
0.63
0.63
    
R8 - mature
0.00
                                    
     = Observed stage of growth at site; use ET rate corresponding to crop maturity in field


The Central Nebraska Public Power and Irrigation District
415 Lincoln Street , P.O. Box 740
Holdrege, Nebraska 68949
Phone 308-995-8601
For additional information, contact: WebMaster

(Updated 2/5/10 )

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