Table 2. Further information of statistically significant linear regressions describing leaf water potential as a function of NDVI as shown in Fig. 7.

Different uppercase letters indicate significant differences in regression slopes or y-intercepts for a particular crop type.

Crop	Date	Irrigation†	Slope	y-Intercept	P-value	R2
Wheat	Apr. 12	F	−31.56	19.88	0.0001	0.93
Corn	Jun. 7	D	29.55A	−21.71B	0.0001	0.89
	Jun. 7	F	28.85A	−22.15C	0.0272	0.53
	Jun. 11	D	23.18A	−16.40A	0.0145	0.60
Cotton	Aug. 9	D	5.508A	−5.629A	0.0095	0.64
	Aug. 9	F	5.051A	−5.708A	0.0117	0.62

Note:

^†“D” and “F” represent “deficit” and “full” irrigation.