Figure 4.

Dynamics of single band reflectances (left), vegetation indices (middle) and texture features (right) for different dates. The solid line shows the high yield group, the dashed line the mean value for the low yield group. The asterisks display significant differences after a t-test (p < 0.05) in the respective values and dates between the two yield groups. The plots are grouped into the first year of trial (top) and the second year of trial (bottom). Asterisks may overlap but only one significance level is given.