Table 2.

Analysis of Variance (ANOVA) of the effect of growth phase and application rate on percent nitrogen derived from fertilizer (NDFF) in common hackberry tissues in 2001.

Tissue	Source	Days after fertilization
Tissue	Source	14	30	60	90	120	150
Foliage	Growth phase (GP)	0.008	0.021	<0.001	0.009	0.023	NA^{^z}
	Treatment (Trt)	0.127	0.001	<0.001	<0.001	<0.001	0.042
	GP * Trt	0.762	0.470	0.142	0.076	0.129	NA
Current season stem wood	Growth phase	0.006	0.019	0.028	0.008	0.023	0.001
	Treatment	0.007	<0.001	<0.001	<0.001	<0.001	<0.001
	GP * Trt	0.004	0.245	0.118	0.005	0.049	0.018
Stem wood	Growth phase	0.001	0.003	0.004	0.008	0.010	0.008
	Treatment	0.004	<0.001	<0.001	<0.001	<0.001	<0.001
	GP * Trt	0.806	0.039	0.176	0.048	0.174	0.102
Root	Growth phase	<0.001	NA^{^y}	0.087	0.616	0.013	0.480
	Treatment	0.121	NA	0.013	0.002	<0.001	<0.001
	GP * Trt	0.760	NA	0.480	0.761	0.351	0.081
Fruit	Treatment	0.104	0.167	0.043	0.021	0.022	NA^{^z}

↵^zLeaves of young trees and fruit of mature trees not present at 150 days.
↵^yTissues not collected at 30 days because of stress to canopy development in young trees.