Effect of Thinning and Harvest Type on Storage and Losses of Phosphorous in Pinus taeda L. Plantations in Subtropical Argentina

Table 3

Content of P exported and remaining in the ecosystem after the final harvest considering stem-only harvest (SO) and whole-tree harvest (WT) types according to thinning intensity (in % of control basal area).

		Content of P	Thinning treatment
		(kg·ha^−1)	0% thinned	33% thinned	66% thinned
Harvest type	SO	Exported at harvest	29.24^a (B)	22.03^b (B)	13.19^c (B)
		Remaining at ecosystem	27.56^a (A)	24.78^a (A)	25.49^a (A)
	WT	Exported at harvest	40.10^a (A)	31.57^b (A)	21.27^c (A)
		Remaining at ecosystem	16.70^a (B)	15.26^a (B)	17.43^a (B)

Different lowercase letters (a, b, c) indicate significant differences (𝑃<.05) among masses of P exported or remaining, among the thinning treatment for the same harvest type. Uppercase letters ((A), (B)) between brackets indicate significant differences (𝑃<.05) among masses of P exported or remaining, among harvest types for the same thinning treatment.