Forest floor contribution to phosphorus nutrition: experimental data

Free Access

Table II

Root length, diameter and density, density of extramatrical mycelia and root tips in the two soil horizons (upper horizon: 0–6 cm depth, deeper horizon: 6–16 cm depth, n = 5). Different letters indicate significant differences between treatments for the same harvest period. Different numbers indicate significant differences between harvest periods for the same treatment (P < 0.05). Values in italics for the deeper horizon indicate significant differences from the upper horizon.

		Root						Extra-matrical mycelia		Root tips

		Length (cm seedling⁻¹)		Diameter (mm)		Density (cm cm⁻³)		density (cm cm⁻³)		(N cm⁻¹)

		MS^*	MS+FF^*	MS	MS+FF	MS	MS+FF	MS	MS+FF	MS	MS + FF
Upper horizon (0–6 cm)
	61 d^†	98.7^1a	131.5^1a	0.78^1b	0.68^1a	0.290^1a	0.301^1a	2.82^1a	3.46^12a	7.6^1a	12.7^1b
	95 d	100.7^1a	202.2^1b	0.83^1b	0.69^1a	0.295^1a	0.463^1b	4.16^1a	1.05^1a	5.51^2a	4.8^2a
	130 d	75.6^1a	393.6^2b	1.11^2b	0.80^2a	0.222^1a	0.900^2b	2.23^1a	8.13^2b	4.3^2a	5.5^2a
Deeper horizon (6–16 cm)
	61 d	138.3^1a	199.5^1a	0.76^1b	0.711^2a	0.280^1a	0.404^1a	3.54^1a	2.03^1a	5.7^1a^*	5.8^1a^*
	95 d	165.4^1a	290.4^{^1b}	0.75^{^1b}	0.68^1a	0.335^1a	0.589^1b	2.53^1a	1.66^1a	4.3^1a	4.4^2a
	130 d	167.0^{^1a}	643.1^{^2b}	0.84^{^2b}	0.76^2a	0.338^1a	1.303^{^2b}	3.57^1a	6.30^1a	4.3^1a	3.9^2a

MS: mineral soil, MS+FF: mineral soil + forest floor.

^†

Number of days after planting.