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 | sugarcane |
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 | technology transfer |
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 | tree crops |
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 | vegetables |
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  | water stress and efficiency |
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 | wheat |
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  | Brazil |
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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 U.S. |
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   | Northeast India & Bangladesh |
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  | Northern Great Plains |
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  | Northwest China |
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 | GANSU-01 | Potassium cycling in the wheat/legume soil/plant system |  |
| NINGXIA-01 | Potassium cycling in the soil/plant system with wheat |  |
 | NINGXIA-2010 | Long-term potash application and straw return on yield and soil fertility in intercropped wheat-maize system in Ningxia |  |
| QINGHAI-03 | Potassium fertilizer efficiency for wheat and rapeseed in Qinghai |  |
 | SHAANXI-02 | Potassium cycling in the wheat/corn rotation soil/plant system in Shaanxi |  |
| XINJIANG-01 | Potassium cycling in the wheat/corn soil/plant system |  |
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  | Southeast China |
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