Agriculture Reference
In-Depth Information
Figure 4.9
. Month by year distribution of the Crop Stress Index (CSI) for the NCR (1971-
2001). See Fig. 4.6 for data sources.
8
(A) Corn
6
4
Yield = 8.183 - 0.137 CSI
r
2
= 0.48
2
0
3
(B) Soybean
2
1
Yield = 2.781 - 0.037 CSI
r
2
= 0.41
0
0
5
10
15
20
25
30
35
Crop Stress Index (May - July)
Figure 4.10
. Average annual grain yields of non-irrigated (A) corn and (B) soybean in the
NCR as a function of the May-July Crop Stress Index (1971-2001). See Figs. 4.3 and 4.6
for data sources.
