Table 2.

Tree harvest.

Potassium level (μg g--1)	Foliar treatment	Trunk diameter (cm)					1-year-old Branches (g)				2-years-old branches (g)			Sum of branches (g)
		LS mean	Letter				LS Mean	Letter			LS mean	Letter		LS mean	Letter
124	Foliar – K	11	a				285	a	b		156	a	b	441	a
124	Foliar – (Bio-2)	11	a				296	a			194	a		490	a
124	Foliar – (Bio-1)	10.6	a	b			323	a			183	a		506	a
124	Foliar – Control	10.6	a	b			338	a			127	a	b	465	a
5	Foliar – (Bio-1)	9.3		b	c		208		b	c	145	a	b	353	a	b
5	Foliar - Control	9			c	d	187			c	94		b	281			c
5	Foliar – K	8.4			c	d	171			c	110		b	281		b	c
5	Foliar – (Bio-2)	8.4				d	213		b	c	105		b	318		b	c
Power analysis		0.38					0.35				0.15			0.1

Multiple mean comparison was performed using Student’s t-test. Values within a column that have a different letter differ significantly at an α level of 0.05 (n = 20). Treatments and letters were sorted accordingly to the trunk diameter results. The statistical power of the factorial design was included for all the response variables. Note that power values are very low and therefore there is a high likelihood of having a type II error (not detecting significant differences when there may be).