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 | nutrient deficiency |
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 | nutrient removal |
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 | oats |
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 | oilseeds |
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 | plant analysis |
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 | potassium |
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  | Brazil |
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  | Eastern Canada & Northeast 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 Latin America |
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 | COLOMBIA-03 | Growth, development and yield of plantain at high density at different rates of nitrogen, phosphorus and potassium |  |
| COLOMBIA-04 | Evaluation of six low-chill requirement peach varieties to low and high potassium nutrition |  |
 | COLOMBIA-05 | Potassium availability in savanna soils growing oil palm |  |
| COLOMBIA-08 | The effect of potassium on papaya yield and quality |  |
 | COLOMBIA-10 | Response of sugarcane to potassium rates in El Cauca valley soils of high pH |  |
| COSTA RICA-05 | High value crop response to nitrogen and phosphorus application in ultisols of Costa Rica |  |
 | COSTA RICA-07 | Evaluation of optimum potassium: calcium: magnesium ratio in banana yields |  |