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Table 4 Phosphorus fractions (mg kg−1) in soils studied

From: Phosphorus availability in relation to soil properties and forest productivity in Pinus sylvestris L. plantations

P fractions

Mean

SD

Min

Max

% of PTotal

PAEM

4.0

1.7

1.4

7.3

2.6

PiNaHCO3

5.6

2.9

2.3

12.2

3.6

PoNaHCO3

14.7

7.4

4.5

37.9

9.5

PiNaOH

23.6

10.2

11.6

53.6

15.2

PoNaOH

37.5

20.9

0.9

84.7

24.3

PHCl1M

3.3

3.0

0.5

12.8

2.1

PHClconc

56.1

22.0

13.8

101.5

36.3

PHClO4

9.8

4.1

2.6

19.1

6.3

PTotal

154.5

55.5

59.7

280.7

100

  1. PAEM, readily available P; PiNaHCO3, PoNaHCO3, inorganic and organic highly labile P; PoNaOH, PiNaOH, inorganic and organic moderately labile P; PHCl1M, primary P; PHClconc, stable P; PHClO4, residual P; PTotal, addition of all previous P fractions analyzed
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Annals of Forest Science

ISSN: 1297-966X