Changes in Soluble-N in Forest and Pasture Soils after Repeated Applications of Tannins and Related Phenolic Compounds

Table 1

Selected soil properties adapted from Halvorson et al. [34]. Mean (SEM), 𝑛=4.

Land use	BD^†	pH(1:1)	EC; (μS cm soil^−1)	TIN^‡; (mg N kg soil^−1)	Total C; (mg C g soil^−1)	Total N; (mg N g soil^−1)	CEC; (cmolc kg soil^−1)	Sand; %	Silt; %	Clay; %
Forest	0.95 (0.03)	4.47 (0.26)	103 (13)	17.3 (3.4)	56.0 (3.5)	4.0 (0.2)	9.8 (1.9)	73.0 (3.1)	20.5 (2.2)	6.5 (1.0)
Pasture	1.14 (0.09)	5.27 (0.08)	151 (14)	26.5 (4.4)	42.9 (2.4)	4.5 (0.4)	10.1 (1.0)	69.0 (6.0)	25.0 (5.3)	6.0 (0.8)

^†Bulk density (BD) for the study was determined gravimetrically.
^‡Total inorganic-N (TIN) was estimated as the sum of water extractable inorganic-N plus KCl extractable-N remaining in soil [33].