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 | nutrient removal |
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 | oats |
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 | oilseeds |
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  | Australia & New Zealand |
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  | East Zone India |
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   | Eastern Canada & Northeast U.S. |
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  | Great Plains U.S. |
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   | North and West Zone India |
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  | Northcentral China |
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  | Northeast India & Bangladesh |
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  | Northern Latin America |
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  | South Zone India |
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  | Southeast China |
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  | Southern and Eastern Russia |
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 | IPNI-32 | Nutrient omission plots in spring wheat in Russia: Omsk Oblast and Republic of Bashkortostan |  |
  | Southern India & Sri Lanka |
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  | Southwest China |
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  | Western U.S. |
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