Non-destructive estimation of field maize biomass using terrestrial lidar: an evaluation from plot level to individual leaf level

Table 8 Correlations between predicted and field-measured biomass at the individual leaf level using simple regression methods

Variable	Simple linear regression		Log transformed simple regression
Variable	R²	RMSE, g	R²	RMSE, g
Leaf length	0.76**	1.25	0.77**	1.13
Leaf mean width	0.67**	1.35	0.67**	1.3
Leaf area	0.84**	1.02	0.84**	0.99
Projected leaf length	0.49**	1.83	0.43**	1.76
PLA	0.79**	1.3	0.72**	1.37
Volume	0.61**	1.47	0.65**	1.38
PAI	0.12	2.11	0.04	2.1
3DPI	0.38**	1.87	0.39**	1.91

Italic values indicate the most important variable and the corresponding prediction accuracy (i.e., R2 and RMSE) of simple regression models (i.e., SLR and LSR)
* p < 0.05; ** p < 0.01

ISSN: 1746-4811