highly significantp < 0.05
marginally significantp = 0.056
One-way ANOVA ( n = 3, since each of the NDVI scans for corn or cotton was done with three replicates) indicated that, except for corn under full irrigation on June 11 that exhibited a marginally significant diurnal change ( p = 0.056), five other diurnal courses of NDVI for corn/cotton all showed significant or highly significant diurnal trends ( p < 0.05).