 |  | | |
  | Brazil |
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|  |
  | Eastern Canada & Northeast U.S. |
| |
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|  |
  | North and West Zone India |
| |
 | NWZ INDIA-07B | Nitrogen, phosphorus and potassium nutrition of olive |  |
| NWZ INDIA-36 | Phosphorus deficiency in legumes and oil crops |  |
 | NWZ INDIA-50 | Multi-nutrient nutrition of spice crops involving phosphorus, potassium, sulfur and magnesium in mountain acid soils of the western Himalayas |  |
  | 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 |
| |
   | Southern India & Sri Lanka |
|  |
  | Southern Latin America |
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|  |
  | Western Canada |
| |
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|  |
 | plant analysis |
| |
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|  |
 | potassium |
| |
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|  |
 | profitability |
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|  |