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Table 2 Rate constants (k), coefficients of determination (R2) and half-lives (t½) for the dissipation of PTA in different Humleore soil horizons at two different moisture contents (10 °C)

From: Bracken growth, toxin production and transfer from plant to soil: a 2-year monitoring study

Hor k (h−1) × 10–2 R2 t½ (h)
pF 1 pF 2 pF 1 pF 2 pF 1 pF 2
A1 13.1 ± 0.79 20.8 ± 1.24 0.993 0.990 5.3 ± 0.32 3.3 ± 0.2
A2 1.6 ± 0.08 2.5 ± 0.14 0.989 0.987 43.6 ± 2.2 28.1 ± 1.6
AE 1.0 ± 0.07 1.1 ± 0.11 0.970 0.938 73.0 ± 5.3 65.4 ± 6.8
  1. Rates and half-lives are expressed as value ± standard error of the regression equation