Observed Soil Data
soil.Rd
A dataset of observed soil data providing detailed chemical and physical properties of soil from experimental trials. These observations are critical for crop modeling, allowing for an in-depth analysis of soil conditions that affect agricultural productivity.
Format
A data.frame
with 18 rows and 22 columns:
- ID
Trial ID - (
character
). A unique identifier for each trial. Example:"LOC1T1PROJ1"
.- LOC_ID
Locality ID - (
character
). Indicates the location of the trial. Example:"LOC1"
.- SAMPLING_DATE
Sampling date - (
date
). The date when the plant sampling was conducted, in MM/DD/YYYY format.- NL
Number of soil layers - (
numeric
). Indicates the maximum layers considered, up to 10.- DEPTH
Thickness of each soil layer - (
numeric
). Measured in centimeters (cm
).- STC
Soil Texture Class (12-USDA) - (
character
). Represents the USDA texture class.- SAND
Soil sand content - (
numeric
). Percentage of sand content (%).- SILT
Soil silt content - (
numeric
). Percentage of silt content (%).- CLAY
Soil clay content - (
numeric
). Percentage of clay content (%).- SBDM
Soil Bulk Density - (
numeric
). Measured in grams per cubic centimeter (g/cm³
).- SOC
Soil organic carbon - (
numeric
). Measured in grams per kilogram (g/kg
).- SLON
Soil Organic Nitrogen - (
numeric
). Measured in milligrams per kilogram (mg/kg
).- SNH4
Ammonium (KCl, elemental N) - (
numeric
). Measured in milligrams per kilogram (mg/kg
).- SNO3
Nitrate (KCl, elemental N) - (
numeric
). Measured in milligrams per kilogram (mg/kg
).- PH
pH - (
numeric
). A measure of soil acidity or alkalinity.- SCEC
Cation exchange capacity - (
numeric
). Measured in centimoles per kilogram (cmol/kg
).- WCST
Saturated volumetric water content - (
numeric
). Percentage of water content when soil is saturated (%).- WCFC
Volumetric water content at field capacity - (
numeric
). Percentage of water content at field capacity (%).- WCWP
Volumetric water content at wilting point - (
numeric
). Percentage of water content at wilting point (%).- WCAD
Volumetric water content at air dryness - (
numeric
). Percentage of water content when soil is air dry (%).- SSKS
Saturated hydraulic conductivity - (
numeric
). Measured in milimeters per hour (mm/h
).
Details
Observed Soil Data
This dataset contains comprehensive chemical and physical soil data from the same experimental trials used in crop modeling within the agroclimR package framework. It includes details on soil layers, texture, content, and other vital soil properties, essential for understanding soil characteristics that influence crop growth and development.
Examples
# Assuming `soil` is your dataset name
summary(soil)
#> ID LOC_ID SAMPLING_DATE NL
#> Length:18 Length:18 Min. :2013-05-10 Min. :1
#> Class :character Class :character 1st Qu.:2014-02-26 1st Qu.:1
#> Mode :character Mode :character Median :2014-06-01 Median :2
#> Mean :2014-08-27 Mean :2
#> 3rd Qu.:2015-08-10 3rd Qu.:3
#> Max. :2015-12-23 Max. :3
#> DEPTH STC SAND SILT
#> Min. :20 Length:18 Min. :28.27 Min. : 2.931
#> 1st Qu.:20 Class :character 1st Qu.:41.63 1st Qu.: 8.775
#> Median :20 Mode :character Median :47.64 Median :38.443
#> Mean :20 Mean :56.49 Mean :29.258
#> 3rd Qu.:20 3rd Qu.:77.86 3rd Qu.:43.547
#> Max. :20 Max. :83.14 Max. :55.999
#> CLAY SBDM SOC SLON
#> Min. : 8.959 Min. :1.401 Min. : 0.400 Min. : 94.47
#> 1st Qu.:13.335 1st Qu.:1.496 1st Qu.: 1.425 1st Qu.: 299.97
#> Median :14.448 Median :1.575 Median : 3.500 Median : 450.21
#> Mean :14.255 Mean :1.595 Mean : 4.365 Mean : 596.37
#> 3rd Qu.:15.522 3rd Qu.:1.696 3rd Qu.: 6.515 3rd Qu.: 650.02
#> Max. :18.258 Max. :1.795 Max. :13.250 Max. :2045.03
#> SNH4 SNO3 PH SCEC
#> Min. : 1.981 Min. : 0.023 Min. :5.180 Min. : 1.740
#> 1st Qu.: 4.270 1st Qu.: 1.563 1st Qu.:6.143 1st Qu.: 5.367
#> Median : 5.307 Median : 3.293 Median :6.310 Median : 7.947
#> Mean : 6.114 Mean : 7.364 Mean :6.256 Mean : 7.947
#> 3rd Qu.: 6.114 3rd Qu.:10.281 3rd Qu.:6.508 3rd Qu.:11.273
#> Max. :19.177 Max. :49.553 Max. :6.870 Max. :14.000
#> WCST WCFC WCWP WCAD
#> Min. :35.52 Min. :11.25 Min. : 5.149 Min. : 3.830
#> 1st Qu.:38.34 1st Qu.:15.46 1st Qu.: 7.513 1st Qu.: 6.339
#> Median :43.84 Median :27.46 Median :16.628 Median : 6.954
#> Mean :45.90 Mean :25.05 Mean :15.919 Mean : 7.046
#> 3rd Qu.:46.41 3rd Qu.:34.25 3rd Qu.:21.696 3rd Qu.: 8.080
#> Max. :69.60 Max. :40.77 Max. :31.793 Max. :10.317
#> SSKS
#> Min. :21.86
#> 1st Qu.:28.10
#> Median :36.32
#> Mean :52.82
#> 3rd Qu.:85.64
#> Max. :98.00