Fig 1.
Rainfall (mm) at Gatton during the seedbank persistence study.
Seeds were placed in the field in April 2016.
Fig 2.
Effect of burial depth and burial duration on seed persistence (%) of two populations [Dalby (a) and St George (b)] of Chloris truncata. Bars are the standard error of means (n = 3). The curves represent an exponential decay model (red, 0 cm; yellow, 2 cm; and blue, 10 cm) and parameter estimates of the model are shown in Table 1.
Table 1.
Parameter estimates of a two-parameter exponential decay model [SP = a*exp(-b*x)] fitted to the seed persistence data of two populations of each weed species.
Fig 3.
Effect of burial depth and burial duration on seed persistence (%) of two populations [Dalby (a) and St George (b)] of Chloris virgata. Bars are the standard error of means (n = 3). The curves represent an exponential decay model (red, 0 cm; yellow, 2 cm; and blue, 10 cm) and parameter estimates of the model are shown in Table 1.
Fig 4.
Effect of burial depth and burial duration on seed persistence (%) of two populations [Dalby (a) and St George (b)] of Dactyloctenium radulans. Bars are the standard error of means (n = 3). The curves represent an exponential decay model (red, 0 cm; yellow, 2 cm; and blue, 10 cm) and parameter estimates of the model are shown in Table 1.
Fig 5.
Effect of burial depth and burial duration on seed persistence (%) of two populations [Dalby (a) and St George (b)] of Urochloa panicoides. Bars are the standard error of means (n = 3). The curves represent an exponential decay model (red, 0 cm; yellow, 2 cm; and blue, 10 cm) and parameter estimates of the model are shown in Table 1.