Secondary metabolites in leaves of hybrid aspen are affected by the competitive status and early thinning in dense coppices

Table 1 Growth characteristics

T	CS	H (cm)	DBH (mm)	LWA (g m⁻²)	[N] (%)	[P] (%)	[K] (%)
UT	D	569 ± 12 a	34 ± 1.2 a	73 ± 1.1 c	2.8 ± 0.06 ab	0.31 ± 0.014 ab	0.68 ± 0.07 b
C	D	553 ± 20 a	39 ± 2.5 a	84 ± 2.6 ab	2.5 ± 0.05 cd	0.28 ± 0.009 ab	0.66 ± 0.053 b
CC	D	521 ± 18 a	38 ± 1.1 a	90 ± 1.5 a	2.5 ± 0.04 bc	0.26 ± 0.008 b	0.59 ± 0.015 b
UT	S	315 ± 25 b	12 ± 1.4 b	47 ± 2.1 d	3.0 ± 0.09 a	0.34 ± 0.019 a	0.94 ± 0.039 a
C	S	304 ± 14 b	14 ± 0.9 b	66 ± 2.0 c	2.5 ± 0.06 cd	0.28 ± 0.011 ab	0.69 ± 0.030 b
CC	S	255 ± 17 b	11 ± 1.3 b	75 ± 1.5 bc	2.2 ± 0.07 d	0.25 ± 0.015 b	0.63 ± 0.017 b

(H height, DBH, stem diameter at breast height), foliar macronutrients and leaf weight per area (LWA) of the analysed model trees (n = 54), arithmetic group means ± SE, followed by letters indicating the results of Tukey’s test. T thinning treatment (UT un-thinned, C corridor thinning, CC cross-corridor thinning); CS, tree competitive status (D dominant, S suppressed)

ISSN: 1297-966X