SOFTWARE FOR ON-FARM IRRIGATION SCHEDULING ... - citaREA

774
775
776
777
778
779
780
781
782
783
784
785
786
Fig. 9. Graphical results of a simulation for a late maturing peach orchard under all
irrigation strategies (standard, RDI, RDImin and water restriction of 4,000 m 3 ha -1 ): a)
crop coefficients; b) gross irrigation requirements; c) cumulative gross irrigation
requirements; and d) irrigation time (hr week -1 ).
Crop coefficient
(m 3 ha -1 )
1
0.9
Kc std
a
0.8
KrRDI
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
KrRDImin
Kr limit.
Oct-09 Jan-10 May-10 Aug-10 Nov-10 Feb-11
Date (mm:yy)
12000
10000
8000
6000
4000
2000
CGIR std
CGIR RDI
CGIR RDImin
CGIR limit.
0
0 5 10 15 20 25 30 35 40 45 50
Week
(mm)
4
3
2
1
0
70
60
50
40
30
20
10
GIR std
GIR RDI
GIR RDImin
GIR limit.
0
0 5 10 15 20 25 30 35 40 45 50
Week
c
7
6
WIT std
WIT RDI
d
WIT RDImin
5 WIT limit.
(hours week -1 )
6
Week
9
12
15
18
21
24
27
30
33
36
39
42
Fig. 10 Graphical results of a simulation for a late maturing peach orchard under all
irrigation strategies (standard, RDI, RDImin and water restriction). Seasonal water
b