Observed Soil Data
soil.RdA 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 DEPTH
#> Length :18 Length :18 Min. :2013-05-10 Min. :1 Min. :20
#> N.unique : 6 N.unique : 1 1st Qu.:2014-02-26 1st Qu.:1 1st Qu.:20
#> N.blank : 0 N.blank : 0 Median :2014-06-01 Median :2 Median :20
#> Min.nchar:11 Min.nchar: 4 Mean :2014-08-27 Mean :2 Mean :20
#> Max.nchar:12 Max.nchar: 4 3rd Qu.:2015-08-10 3rd Qu.:3 3rd Qu.:20
#> Max. :2015-12-23 Max. :3 Max. :20
#> STC SAND SILT CLAY
#> Length :18 Min. :28.27 Min. : 2.931 Min. : 8.959
#> N.unique : 3 1st Qu.:41.63 1st Qu.: 8.775 1st Qu.:13.335
#> N.blank : 0 Median :47.64 Median :38.443 Median :14.448
#> Min.nchar: 2 Mean :56.49 Mean :29.258 Mean :14.255
#> Max.nchar: 4 3rd Qu.:77.86 3rd Qu.:43.547 3rd Qu.:15.522
#> Max. :83.14 Max. :55.999 Max. :18.258
#> SBDM SOC SLON SNH4
#> Min. :1.401 Min. : 0.400 Min. : 94.47 Min. : 1.981
#> 1st Qu.:1.496 1st Qu.: 1.425 1st Qu.: 299.97 1st Qu.: 4.270
#> Median :1.575 Median : 3.500 Median : 450.21 Median : 5.307
#> Mean :1.595 Mean : 4.365 Mean : 596.37 Mean : 6.114
#> 3rd Qu.:1.696 3rd Qu.: 6.515 3rd Qu.: 650.02 3rd Qu.: 6.114
#> Max. :1.795 Max. :13.250 Max. :2045.03 Max. :19.177
#> SNO3 PH SCEC WCST
#> Min. : 0.023 Min. :5.180 Min. : 1.740 Min. :35.52
#> 1st Qu.: 1.563 1st Qu.:6.143 1st Qu.: 5.367 1st Qu.:38.34
#> Median : 3.293 Median :6.310 Median : 7.947 Median :43.84
#> Mean : 7.364 Mean :6.256 Mean : 7.947 Mean :45.90
#> 3rd Qu.:10.281 3rd Qu.:6.508 3rd Qu.:11.273 3rd Qu.:46.41
#> Max. :49.553 Max. :6.870 Max. :14.000 Max. :69.60
#> WCFC WCWP WCAD SSKS
#> Min. :11.25 Min. : 5.149 Min. : 3.830 Min. :21.86
#> 1st Qu.:15.46 1st Qu.: 7.513 1st Qu.: 6.339 1st Qu.:28.10
#> Median :27.46 Median :16.628 Median : 6.954 Median :36.32
#> Mean :25.05 Mean :15.919 Mean : 7.046 Mean :52.82
#> 3rd Qu.:34.25 3rd Qu.:21.696 3rd Qu.: 8.080 3rd Qu.:85.64
#> Max. :40.77 Max. :31.793 Max. :10.317 Max. :98.00