Mechanical Mastication of Utah Juniper Encroaching Sagebrush Steppe Increases Inorganic Soil N

Table 4

Masticated-tree debris and intact tree mound effects on soil nutrients derived from soil samples.

	Debris	No debris
Total C%
Tree mound intact	7.61^a (6.25–8.97)	7.07^a (5.71–8.43)
Interspace	4.44^b (3.08–5.80)	3.70^b (2.34–5.07)
Total N%
Tree mound intact	0.32^a (0.27–0.38)	0.28^a (0.23–0.34)
Interspace	0.16^b (0.1–0.21)	0.10^b (0.05–0.16)
C : N ratio
Tree mound intact	23.43^a (16.33–33.62)	24.95^b (17.39–35.8)
Interspace	31.02^a (21.62–44.51)	41.12^a (28.65–59.00)
Olsen P mg kg^−1
Tree mound intact	26.66^a (20.04–35.45)	33.99^a (25.56–45.21)
Interspace	26.02^a (19.56–34.60)	22.65^a (17.03–30.12)
SO4^−-S mg kg^−1
Tree mound intact	16.45^a (5.90–45.88)	31.21^a (11.19–87.06)
Interspace	3.63^a (1.30–10.11)	8.33^b (2.99–23.23)
pH
Tree mound intact	7.67^a (7.58–7.76)	7.63^a (7.54–7.72)
Interspace	7.67^a (7.58–7.76)	7.68^a (7.59–7.77)

No differences between columns (𝑃>0.01). Estimates with the same letter between rows are not different (𝑃<0.01). Numbers in parentheses are 95% confidence intervals.