Remote Sensing Applications in Tobacco Yield Estimation and the Recommended Research in Zimbabwe

Table 1

Correlation coefficients of spectral variables with cotton yield.

Spectral variables	Spectra 2 × 2 m versus Yield 2 × 2 m	Spectra 10 × 10 m versus Yield 10 × 10 m	Spectra 20 × 20 m versus Yield 20 × 20 m
12/07_NDVI	0.54	0.71	0.68
12/07_SAVI	0.54	0.71	0.68
12/07_IR	0.44	0.68	0.69
12/07_RED	0.15	0.57	0.67
12/07_Green	0.24	0.61	0.68
12/07_NDVI	0.55	0.72	0.7
12/07_SAVI	0.55	0.72	0.7
12/07_IR	0.46	0.68	0.69
12/07_RED	0.16	0.59	0.67
12/07_Green	0.27	0.63	0.68
12/07_NDVI	0.24	0.61	0.68
12/07_SAVI	0.24	0.61	0.68
12/07_IR	0.21	0.6	0.69
12/07_RED	0.24	0.62	0.69
12/07_Green	0.27	0.63	0.69

Source: Toulios et al. [28].