Fertilizer Uptake, Partitioning, and Recovery in Container-Grown Common Hackberry (Celtis occidentalis) Trees

L.P. Werner; L.G. Jull

doi:10.48044/jauf.2009.039

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Figure 1.
Total [N] in foliage of common hackberry at (A) Arlington, WI and (B) Lisle, IL in 2002. Symbols represent the mean (n = 5) ± the adjusted standard error. Asterisk indicates significant difference at P ≤ 0.05.
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Figure 2.
Total [N] in stem wood of common hackberry at (A) Arlington, WI, and (B) Lisle, IL in 2002. Symbols represent the mean (n = 5) ± adjusted standard error. Asterisk indicates significant difference at P ≤ 0.05.
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Figure 3.
Total [N] in root tissues of common hackberry at (A) Arlington, WI, and (B) Lisle, IL in 2002. Symbols represent the mean (n = 5) ± adjusted standard error. Asterisk indicates significant difference at P ≤ 0.05.
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Figure 4.
Percent fertilizer recovery in aboveground tissues of common hackberry at (A) Arlington, WI, and (B) Lisle, IL in 2002. Symbols represent the mean (n = 5) ± the adjusted standard error. Scales on the y-axis are different.
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Table 1.

Analysis of Variance (ANOVA) P-values for the effect of application rate on total N concentration (N), weighted total (N), and N partitioning in common hackberry tissues at Arlington, WI, and Lisle, IL in 2002.

Parameter	Tissue Type	Arlington, WI Days after Fertilization				Lisle, IL Days after Fertilization
Parameter	Tissue Type	14	30	60	90	14	30	60	90
Total [N] (% dry weight)	Foliage	0.144^{^z}	0.052	<0.001	0.285	0.012	0.485	0.196	0.143
	Current Stem Wood	0.845	0.093	0.100	0.229	0.098	0.787	0.750	0.449
	Stem Wood	0.859	0.804	0.679	0.037	0.101	0.661	0.079	0.641
	Root	0.058	0.001	0.263	0.002	0.021	0.165	0.607	0.656
Weighted Total [N] (% dry weight)	All Aboveground Tissues^{^y}	0.198	0.212	0.006	0.697	0.505	0.269	0.045	0.841
N Partitioning	Foliage	0.670	0.005	0.747	0.939	0.189	0.947	0.929	0.983
	Current Stem Wood	0.677	0.813	0.229	0.804	0.242	0.840	0.793	0.049
	Stem Wood	0.095	0.061	0.362	0.908	0.263	0.923	0.930	0.955

↵^zAll values are means of n = 5.
↵^ySum of percent N in foliage, current season stem wood, stem wood × percent aboveground biomass (dry weight) represented by each of these tissues.

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Table 2.

Total N partitioning, as a percentage of total N in all aboveground tissues, in common hackberry at Arlington, WI, and Lisle, IL in 2002.

Trt (g)	Tissue Type	Arlington, WI Days after Fertilization				Lisle, IL Days after Fertilization
Trt (g)	Tissue Type	14	30	60	90	14	30	60	90
0	Foliage	51	47	47	6	38	43	38	20
	Current Stem Wood	4	4	5	8	4	4	4	5
	Stem Wood	45	49	48	86	58	53	58	75
1.42	Foliage	49	52	46	5	42	42	37	20
	Current Stem Wood	4	3	4	9	5	5	4	3
	Stem Wood	47	45	50	86	53	53	59	77
4.27	Foliage	54	55	48	4	36	44	36	20
	Current Stem Wood	4	3	6	9	6	4	4	5
	Stem Wood	42	42	47	87	58	52	60	75

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Table 3.

Analysis of Variance (ANOVA) P-values for the effect of 1.42 g N and 4.27 g N per tree on percent nitrogen derived from fertilizer (NDFF) and fertilizer N recovery in common hackberry tissues at Arlington, WI, and Lisle, IL in 2002.

Parameter	Tissue Type	Arlington, WI Days after Fertilization				Lisle, IL Days after Fertilization
Parameter	Tissue Type	14	30	60	90	14	30	60	90
% NDFF	Foliage	<0.001^{^z}	<0.001	<0.001	0.003	0.002	0.004	<0.001	<0.001
	Current Stem Wood	<0.001	<0.001	<0.001	<0.001	0.002	0.004	<0.001	<0.001
	Stem Wood	<0.001	<0.001	<0.001	0.001	0.003	0.013	<0.001	0.002
	Root	<0.001	0.003	0.002	0.001	0.003	0.013	0.005	0.002
% Fertilizer Recovery	Above Ground Tissues^{^y}	0.476	0.418	0.138	0.380^{^x}	0.749	0.544	0.684	0.327^{^x}

↵^zAll values are means of n = 5.
↵^ySum of fertilizer recovery in foliage, current season stem wood, and stem wood.
↵^xSum of fertilizer recovery in remaining foliage, current season stem wood and stem wood.

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Table 4.

Percent nitrogen derived from fertilizer (NDFF) in common hackberry tissues at Arlington, WI, and Lisle, IL in 2002.

Tissue	Trt (g)	Arlington, WI Days after Treatment				Lisle, IL Days after Treatment
Tissue	Trt (g)	14	30	60	90	14	30	60	90
Foliage	1.42	6.5^{^z^y^x}	9.4	7.7	5.2	6.8	4.9	4.7	2.4
Foliage	4.27	16.7	24.7	20.1	18.0	19.7	18.3	12.4	14.3
Current Stem Wood	1.42	5.3	7.7	6.2	5.4	5.7	3.6	4.1	2.6
Current Stem Wood	4.27	16.7	20.9	14.7	16.9	15.6	13.8	9.4	11.2
Stem Wood	1.42	2.0	4.0	4.0	4.5	1.2	1.0	1.4	1.3
Stem Wood	4.27	6.1	13.0	11.9	13.7	4.3	4.1	4.1	5.4
Root	1.42	5.3	7.0	7.3	6.4	1.7	1.6	2.8	1.6
Root	4.27	15.2	18.6	18.1	14.2	4.4	4.1	5.5	6.9

↵^zValues are the adjusted means of n = 5.
↵^yBack-transformed values.
↵^xAll treatment comparisons within a tissue type were significant at P ≤ 0.01 for all harvest periods.

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Table 5.

Percent applied fertilizer N partitioned to aboveground common hackberry tissues at Arlington, WI, and Lisle, IL in 2002.

Tissue	Trt (g)	Arlington, WI Days after Fertilization				Lisle, IL Days after Fertilization
Tissue	Trt (g)	14	30	60	90	14	30	60	90
Foliage	1.42	11.4^{^z}	15.7	13.2	1.3	5.8	6.2	3.4	1.5
Current Stem Wood	1.42	0.8	0.9	1.0	0.1	0.5	0.5	0.3	0.2
Stem Wood	1.42	3.4	6.0	7.6	8.4	1.3	1.2	1.4	2.2
Foliage	4.27	10.9	17.4	15.2	0.7	4.8	6.0	3.4	2.2
Current Stem Wood	4.27	0.8	0.9	1.0	1.1	0.6	0.5	0.3	0.4
Stem	4.27	3.1	6.4	8.7	9.2	1.6	1.6	1.8	2.9