usfertilizer: County-Level Estimates of Fertilizer Application in USA

Compiled and cleaned the county-level estimates of fertilizer, nitrogen and phosphorus, from 1945 to 2012 in United States of America (USA). The commercial fertilizer data were originally generated by USGS based on the sales data of commercial fertilizer. The manure data were estimated based on county-level population data of livestock, poultry, and other animals. See the user manual for detailed data sources and cleaning methods. 'usfertilizer' utilized the tidyverse to clean the original data and provide user-friendly dataframe. Please note that USGS does not endorse this package. Also data from 1986 is not available for now.

Package details

AuthorWenlong Liu [aut, cre]
MaintainerWenlong Liu <[email protected]>
LicenseGPL
Version0.1.5
URL https://github.com/wenlong-liu/usfertilizer
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("usfertilizer")

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usfertilizer documentation built on May 2, 2019, 6:45 a.m.