Inconsistent Growth Response to Fertilization and Thinning of Lodgepole Pine in the Rocky Mountain Foothills Is Linked to Site Index

Table 3

Foliar nutrient concentrations after the first growing season in relation to thinning and fertilization treatments. Letters represent significant differences between treatments.

Thinning	Fertilization	P	K	S	Ca	Mg	So4^−	B	Cu	Zn	Fe	Mn
		(%)	(%)	(%)	(%)	(%)	(ppm)	(ppm)	(ppm)	(ppm)	(ppm)	(ppm)
Unthinned	Control	0.132^c	0.409	0.089^bc	0.187	0.082	127.7^a	11.16^b	3.49	45.6	53.3^ab	370.3
	N-only	0.133^bc	0.407	0.088^c	0.182	0.075	48.7^b	8.67^b	3.29	43.8	47.7^bc	360.7
	Complete	0.149^a	0.435	0.108^a	0.189	0.075	94.9^a	34.29^a	3.23	42.7	44.5^c	360.7
Thinned	Control	0.135^bc	0.413	0.091^bc	0.211	0.084	121.2^a	11.78^b	3.54	45.4	54.9^a	400.8
	N-only	0.143^ab	0.405	0.096^b	0.187	0.077	48.6^b	8.93^b	3.77	44.7	48.9^abc	360.5
	Complete	0.150^a	0.447	0.111^a	0.189	0.075	97.8^a	32.10^a	3.48	43.5	46.6^c	378.0