Table 1. Available soil water by foot increments to six feet and rainfall between dates of soil water measurements on Amidon spring wheat, 1990.

            Planted
Emerge
Harvest (m2)
Harvest (combine)
April 24
May 8
July 27
August 2
  Soil Depth (feet)
Date
mo/day
DSa 0-1
inches water
1-2
inches water
2-3
inches water
3-4
inches water
4-5
inches water
5-6
inches water
Rain
Inches
5/03

5/15

5/23

5/29

6/04

6/11

6/20

6/26

7/05

7/09

7/16

7/23

7/30

-

1.2

2.3

3.5

4.8

6.3

8.2

9.7

12.2

13.2

14.0

15.1

16.0

1.19

1.19

1.47

1.88

2.19

0.96

2.17

0.83

0.32

0.08

-0.04

-0.17

-0.26

1.19

1.24

1.26

1.32

1.39

1.27

0.95

0.75

0.41

0.25

0.12

0.03

0.02

1.41

1.48

1.48

1.47

1.49

1.51

1.36

1.21

0.78

0.57

0.36

0.23

0.19

1.31

1.37

1.39

1.42

1.41

1.45

1.40

1.34

1.17

1.03

0.72

0.54

0.42

1.59

1.59

1.59

1.65

1.63

1.69

1.64

1.62

1.60

1.64

1.55

1.50

1.48

1.39

1.42

1.44

1.46

1.46

1.47

1.46

1.47

1.42

1.50

1.47

1.48

1.50

0.04

0.16

0.79

0.95

0.94

0.16

1.85

0.00

1.22

0.00

0.71

0.04

0.00

  "used" 1.45 1.17 1.22 0.89 0.11 -0.11 6.86
a Development stage, expanded Haun scale, estimated from regression of growing degree days.

Rain - 6.86 inches
(7/30 - 5/03) Soil water use (4 ft) - 4.73 inches

11.59 inches