An assessment of the incidence of ray blight disease of pyrethrum in 62 sampling units, containing 6 plants each.

pyrethrum_ray_blight

Format

A data frame with 62 rows and 2 variables:

[, 1]iNumber of diseased plants (from 0 to 6).
[, 2]nSampling unit size. Here, n = 6 plants per sampling unit.

Source

Pethybridge SJ, Esker P, Hay F, Wilson C, Nutter FW. 2005. Spatiotemporal description of epidemics caused by Phoma ligulicola in Tasmanian pyrethrum fields. Phytopathology 95, 648–658. doi:10.1094/PHYTO-95-0648