Functions for modeling Soil Organic Matter decomposition
in terrestrial ecosystems with linear and nonlinear models.

A System of Soil Classification for Making and Interpreting Soil
Surveys
Taxonomic dictionaries, formative element lists, and functions related to the maintenance, development and application of U.S. Soil Taxonomy.
Data and functionality are based on official U.S. Department of Agriculture sources including the latest edition of the Keys to Soil Taxonomy. Descriptions and metadata are obtained from the National Soil Information System or Soil Survey Geographic databases. Other sources are referenced in the data documentation.
Provides tools for understanding and interacting with concepts in the U.S. Soil Taxonomic System. Most of the current utilities are for working with taxonomic concepts at the "higher" taxonomic levels: Order, Suborder, Great Group, and Subgroup.
c(person(given="Dylan", family="Beaudette", role = c("aut"), email = "dylan.beaudette@usda.gov"), person(given="Andrew", family="Brown", email="andrew.g.brown@usda.gov", role = c("aut", "cre")))
testthat, covr, knitr, rmarkdown, markdown
Dylan Beaudette [aut],
Andrew Brown [aut, cre]

Taxonomic dictionaries, formative element lists, and functions related to the maintenance, development and application of U.S. Soil Taxonomy.

c(person(given="Andrew", family="Brown", email="andrew.g.brown@usda.gov", role = c("aut", "cre")), person(given="Dylan", family="Beaudette", role = c("aut"), email = "dylan.beaudette@usda.gov"))
testthat, covr, knitr, rmarkdown, markdown, soilDB
Andrew Brown [aut, cre],
Dylan Beaudette [aut]

testthat, covr, knitr, rmarkdown, markdown, soilDB, ape

Organic Carbon and Plant Available Nutrient Contents in Soil
c(person(given = "Bappa",
family = "Das",
role = c("aut", "cre"),
email = "bappa.iari.1989@gmail.com",
comment = c(ORCID = "0000-0003-1286-1492")),
person("Debarup", "Das", email = "debarupds@gmail.com", role = c("aut", "ctb"),
comment = c(ORCID = "0000-0002-0706-3392")))
Testing of soil for the contents of organic carbon, and available macro- and micro-nutrients is a crucial part of soil fertility assessment. This package computes some routinely tested soil properties viz. organic carbon (C), total nitrogen (N), available N, mineral N, available phosphorus (P), available potassium (K), available iron (Fe), available zinc (Zn), available manganese (Mn), available copper (Cu), and available nickel (Ni) in soil based on laboratory analysis data obtained by most commonly followed protocols. Besides, it can also draw standard curves based on absorption/emission vs. concentration data, and give out unknown concentrations from absorption/emission readings.