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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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| Southern India & Sri Lanka |
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 | Southern Latin America |
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| ARGENTINA-01 | Evaluation of residual soil phosphorus for two crop sequences | |
| ARGENTINA-06 | Efficiency of phosphorus fertilization in wheat and corn in mollisols of the southeast Pampean region | |
| ARGENTINA-09 | Phosphorus and Potassium Fertilization Management in the Western Pampas | |
| ARGENTINA-13 | Phosphorus and Sulfur Management in Central Santa Fe | |
| ARGENTINA-21 | Analysis of soil testing databases of the provinces of Chaco and Mendoza (Argentina) | |
| ARGENTINA-22 | Assessment of the contribution of the soil organic phosphorus fraction to the prediction of no-till soybean grain yield response to phosphorus fertilizer in the humid pampas (Argentina) | |
| ARGENTINA-23 | Corn fertilization in the northern Pampas (Argentina) | |
| ARGENTINA-23 | Corn fertilization in the northern Pampas (Argentina) | |
| ARGENTINA-24 | Phosphorus management for sunflower | |
| ARGENTINA-25 | Estimation of phosphorus requirements in soils of the Pampean Region | |
| ARGENTINA-26 | Soil nutrient mapping in La Pampa province (Argentina) | |
| ARGENTINA-28 | Evaluation of enhanced efficiency fertilizers for wheat and corn | |
| PARAGUAY-01 | Fertilization network at Eastern Paraguay
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| Southwest China |
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