Fig. 10
From: Global crop-specific nitrogen fertilization dataset in 1961–2020
Comparison of country-level consumption per harvested area (kg N ha−1) of different fertilizer types during 1962–1972. Panel (a–c) represent comparison per ha of harvested area of urea, ammonium nitrate and ammonium sulphate filled by Amelia approach against official data from the FAOSTAT20, respectively. Panel (d) represents comparisons of sum of fertilizer consumption per ha of harvested area filled by Amelia approach against total fertilizer consumption from the IFASTAT21. Each point represents the fertilizer consumption of a specific country in a particular year.
