Soybean canopy cover from HTP platform (Keller et all., 2026)

Canopy cover time series for 78 soybean plots grown at the ETH Zurich Field Phenotyping Platform (FIP) site in Eschikon, Switzerland, during the 2022 season. Canopy cover was derived from high-throughput field images and is expressed as the fraction of ground covered by the crop.

Usage

dt_soybean_22

Format

A tibble with 2,793 rows and 7 variables:

location

Character. Trial site. Always "Eschikon".

Year

Numeric. Growing season. Always 2022.

sowing_date

Date. Date of sowing (2022-04-21).

harvest_date

Date. Date of harvest (2022-09-23).

plot.UID

Character. Unique plot identifier, 78 levels.

time_since_sowing

Numeric. Days elapsed since sowing, ranging from 0 to 151 over 30 measurement dates.

Canopy_cover

Numeric. Fraction of ground covered by the canopy, ranging from 0 to 0.95. Contains 59 missing values.

Source

Keller et al. (2026). Derived from the Soybean_CanopyCover_data.csv file in the FIP 1.0 soybean data collection and subset to the 2022 growing season. doi:10.3929/ethz-b-000742401

Details

Every plot includes an anchor observation at time_since_sowing = 0 with Canopy_cover = 0, added with series_mutate(add_zero = TRUE) when the dataset was assembled.

References

Keller, B., Kirchgessner, N., Oppliger, C., Kronenberg, L., Roth, L., Zumsteg, O., Corrado, S., Liebisch, F., Aasen, H., Storni, N., Tschurr, F., Zellweger, H., Betrix, C. A., Barendregt, C., Hund, A., & Walter, A. (2026). FIP 1.0 soybean data: Insights on soybean growth from eight years of high-throughput image field phenotyping. Scientific Data, 13(1), 476. doi:10.1038/s41597-026-06663-z

Examples

library(flexFitR)
data(dt_soybean_22)
head(dt_soybean_22)
#> # A tibble: 6 × 7
#>   location  Year sowing_date harvest_date plot.UID    time_since_sowing
#>   <chr>    <dbl> <date>      <date>       <chr>                   <dbl>
#> 1 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                 0
#> 2 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                22
#> 3 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                25
#> 4 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                29
#> 5 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                34
#> 6 Eschikon  2022 2022-04-21  2022-09-23   FPSB0160001                40
#> # ℹ 1 more variable: Canopy_cover <dbl>

# Temporal evolution of all plots
explorer(dt_soybean_22, x = time_since_sowing, y = Canopy_cover, id = plot.UID) |>
  plot(type = "evolution", add_avg = TRUE)
#> Warning: Removed 32 rows containing missing values or values outside the scale range
#> (`geom_line()`).