Using seasonal measurements to inform ecophysiology: extracting cardinal growth temperatures for process-based growth models of five Eucalyptus species/crosses from simple field trials

New Zealand Journal of Forestry Science

Table 1 Average physical and chemical soil properties sampled from two soil pits (1 m × 1 m × 1 m dimension) located in the area before establishment of the trial

Soil horizon	Depth	Coarse fragments	Bulk density	PWP	FC	pH	OM	N	P	K	B
	(cm)	(%)	(g cm⁻³)	---- % ----		1:2.5	%	----- (mg Kg⁻¹) -----
A	5	0	0.7	24.3	44.7	5.5	7.6	41	5.3	250	1.3
BA	15	0	1.1	22.0	42.1	5.3	5.9	38	0.75	75	1.0
B1	33	5	1.1	20.3	42.1	5.7	2.3	22	0.28	25	0.3
B2	33-100	10	1.2	23.9	43.5	5.3	4.2	24	1.05	33	0.8

PWP: Permanent wilting point; FC: Field capacity; pH: acidity determined on a 1:2.5 soil:water ratio; OM: organic matter determined by LOI at 450°C; N: Available N extracted with 2 M KCl and determined by titration; P: soil available phosphorus Olsen extraction and determined colorimetrically; K. available soil potassium via ammonium acetate extraction and determined via atomic absorption spectrometry; B: available boron extracted with hot water and determined colorimetrically.