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. 2020 Aug 10;150(2):139–180. doi: 10.1007/s10533-020-00691-6

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Fig. 7 — Percent of hectares planted in crop indicated receiving a nitrogen or b phosphorus fertilizer more than 25% above the recommended agronomic need of the plant. Replotted from https:www.ers.usda.gov/topics/farm-practices-management/crop-livestock-practices/nutrient-management/. Symbols used are from Vectorstock used under an expanded license