Influence of Plant Population and Nitrogen-Fertilizer at Various Levels on Growth and Growth Efficiency of Maize

Table 4

Interrelationship among the different plant characters of maize plant.

Characters	N-content in leaves (%)	LTR	LAI	TDM	GY	HI
SPAD value	0.885**	0.273^NS	0.503^NS	−0.253^NS	0.252^NS	0.621*
N-content in leaves (%)	—	−0.009^NS	0.709*	−0.006^NS	0.495^NS	0.649*
LTR	—	—	−0.597*	−0.963**	−0.653*	0.189^NS
LAI	—	—	—	0.605*	0.722*	0.292^NS
TDM	—	—	—	—	0.713*	0.177^NS
GY	—	—	—	—	—	0.613*

LTR: light transmission ratio; LAI: leaf area index; TDM: total dry-matter; GY: grain yield; HI: harvest index; SPAD: soil-plant-analysis development; NS: not significant; *significant at 5% level; **significant at 1% level.