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 | phosphorus |
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 | Australia & New Zealand |
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| BRAZIL-55 | Sources and Rates of Phosphorus in a Cultivation System Integrating Crop and Pasture Production in the State of Parana | |
| BRAZIL-59 | Agronomic Effectiveness of Acidulated Phosphate Fertilizers with Different Water Solubility | |
| East Zone India |
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| Middle East |
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| North and West Zone India |
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| Northcentral U.S. |
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| Northern Great Plains |
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| Southeast U.S. |
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| Southern and Eastern Russia |
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| Southern India & Sri Lanka |
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| Western U.S. |
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| plantation crops |
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| potato |
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| pulse crops |
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| rice |
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| soil management zones |
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