Crystal Lu
Historical trends in phosphorus fertilizer use in the US: 1850 to 2021
Figure. Time series of P fertilizer consumption and average application rates for all crops (a) and P fertilizer application rates (b)...
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Data Products
Crystal Lu
Jul 20, 20231 min read
County-level crop nitrogen budget history in the US during 1970-2019
Figure. Nitrogen budget aggregated from the eight crops in the U.S. from 1970 to 2019. N inputs include manure (Nman), atmospheric...
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Crystal Lu
Nov 2, 20172 min read
Data of Global nitrogen and phosphorus fertilizer use in the past half century
Spatial distribution and changes of N/P ratio in synthetic fertilizer application across the world in the years of 1961, 1980, 1990, and...
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Crystal Lu
Nov 2, 20171 min read
Time series data of nitrogen fertilizer use in the US from 1850 to 2015
Agricultural nitrogen fertilizer use rate increased by 33 folds in the continental US during 1940-2015, with the hot-spots shifting from...
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