Mean root length density (RLD) in mm-3 for unpollarded (UP), pollarded once (IP) and repollarded (RP) willow treatments one year after repollarding, separated by root diameter class and soil depth and over the depth 0-600 mm with no separation for distance from the trunk, expressed as a % RLD of the UP treatment. Data collected on Day 416.

Table 2: Mean root length density (RLD) in mm-3 for unpollarded (UP), pollarded once (IP) and repollarded (RP) willow treatments one year after repollarding, separated by root diameter class and soil depth and over the depth 0-600 mm with no separation for distance from the trunk, expressed as a % RLD of the UP treatment. Data collected on Day 416.

Treatment	Depth (mm)	Root Diameter class (mm)
		< 1	1 < 2	2 < 5	5 < 10	≥ 10	All
		Root Length Density as a % of the unpollarded treatment
IP	0-150	102	90	72	102	169	99
	150-300	129	73	92	222	141	112
	300-450	102	73	186 (^*)	62	37	96
	450-600	94	61	111	119	158	84
	0-600	106	81	88	109	118	100
RP	0-150	37^*	56	72	68	97	42^*
	150-300	101	66	99	77	228	91
	300-450	84	84	103	38	49	83
	450-600	92	57	114	0	89	80
	0-600	53^*	62	83	59	93	57^*

Significant (P < 0.05) differences from the UP value marked with an asterisk; near-significant differences marked with a (*).