Linear relationships between tea leaf yield and MODIS NDVI were developed. Here five years yield from 2000 – 2004 as well as their corresponding NDVI were used for the yield model. The observations were linearly regressed for three different months as shown in the Table 10. It was observed that there is a significant positive correlation between yield and NDVI. The variance of 0.243 and 0.292 indicate that there is greater variability in the yield during different periods. Though the R2 value of the coefficient of determination was found to be less the relationships were significant.  The significance (probability) of the F value was set at 0.05 level. The entry probability of F value taken is less than 0.05 for significant result. The F probability result shows for all linear regression equation are less than significance F change. There is a close relationship between yield and NDVI. Therefore the Null Hypothesis1 (H0) which shows that there is a close relationship between yield, LAI and NDVI used for finding the yield variability is accepted while the alternative hypothesis (Ha) is rejected.  Figure 63: MODIS NDVI Map with the Garden Boundaries |