Allometric equations for estimating belowground biomass of Androstachys johnsonii Prain

Table 2 Belowground biomass allocation patterns

Statistic	Taproot (TR)		Root collar (RC)			Lateral roots (LR)		Root system (RS) (Kg)	% of the RS found at 20% of the TR depth
Statistic	Kg	% RS_TR	Kg	% TR_RC	% RS_RC	Kg	% RS_LR	Root system (RS) (Kg)	% of the RS found at 20% of the TR depth
Minimum	0.00	0.00	0.00	2.86	0.00	0.00	0.00	1.93	40.43
Average	18.64	48.36	13.32	64.92	30.79	24.05	51.64	42.69	81.20
Maximum	63.60	100.00	54.90	89.61	55.86	100.82	100.00	149.38	100.00
SD	15.78	15.34	12.29	16.64	11.22	23.98	15.34	37.97	11.16
CV	84.65	31.72	92.26	25.64	36.44	99.69	29.71	88.94	13.53

The last column represents the percentage of the root system biomass found at 20% of the taproot depth, which is equivalent to 9.6 to 61.2 cm in depth from the ground level.
SD standard deviation, CV coefficient of variation (%), % RS _TR percentage of the root system biomass attributed to the taproot biomass, %TR _RC percentage of the taproot biomass attributed to the root collar biomass, %RS _RC percentage of the root system biomass attributed to root collar biomass, %RS _LR percentage of the root system biomass attributed to lateral roots biomass.

ISSN: 1750-0680