Indiana reference disease observations

Plot- or site-level reference observations from Indiana used for model calibration/validation and retrospective analyses.

Usage

reference_indiana

Format

A data frame with 5 variables:

site

Character. Site identifier (e.g., station or field name).

year

Integer. Calendar year (>= 1972).

DOY

Integer. Day of year (1–366) for the observation.

FINT

Numeric. Fungal infection index (or other model-specific infection/intensity metric).

Disease

Numeric or integer. Observed disease value (e.g., severity or incidence; unit depends on the study protocol).

Source

Shaner, G., Buechley, G. (1995). Epidemiology of leaf blotch of soft red winter wheat caused by *Septoria tritici* and *Stagonospora nodorum*. *Plant Disease*, 79(9), 928–938. doi:10.1094/PD-79-0928 Available at https://www.apsnet.org/publications/plantdisease/backissues/Documents/1995Articles/PlantDisease79n09_928.PDF

Details

Filtered from the original source to include only records from 1972 onward. Columns are renamed so that `site` corresponds to `sName` in the raw data. Data were digitized from the original publication by Shaner & Buechley (1995).

Examples

data(reference_indiana)
head(reference_indiana)
#>      site year DOY FINT Disease
#> 1 Indiana 1973 144 1.00      NA
#> 2 Indiana 1973 187 0.25      NA
#> 3 Indiana 1974 141 1.00      NA
#> 4 Indiana 1974 189 0.25      NA
#> 5 Indiana 1975 143 1.00      NA
#> 6 Indiana 1975 188 0.25      NA