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 | manganese |
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| maximum economic yield (MEY) |
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|
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 | nitrogen |
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| Brazil |
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| Eastern Canada & Northeast U.S. |
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|
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| Great Plains U.S. |
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| Mexico & Central America |
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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 |
| |
| COLOMBIA-03 | Growth, development and yield of plantain at high density at different rates of nitrogen, phosphorus and potassium | |
| COSTA RICA-05 | High value crop response to nitrogen and phosphorus application in ultisols of Costa Rica | |
| ECUADOR-03 | Fertilizer and Irrigation Management Effects on the Growth and Yield of Oil Palm in Ecuador | |
| GUATEMALA-01 | Critical soil and foliar levels for nitrogen, phosphorus and potassium in coffee grown in Guatemala | |
| GUATEMALA-03 | Response of coffee to different application dates for nitrogen and potassium in different Guatemalan soils | |
| MEXICO-03 | Effect of nitrogen and potassium fertilizer on yield and quality of broccoli and on residual soil fertility | |
| MEXICO-10 | Effect of rhizobacteria/endomycorrhizae and humic acid combination on the uptake of nitrogen and phosphorus in winter wheat grown in alkaline soils | |
| MEXICO-12 | Effect of nitrogen and potassium fertilization on yield of broccoli in the "El Bajio" of Mexico | |
| MEXICO-28 | Response of dry beans to nitrogen, phosphorus and potassium fertilization in low rainfall areas | |
| MEXICO-43 | Impacto del manejo de la fertilidad del suelo en el rendimiento de maíz de grano de dos ciclos en el mediano plazo en el Sureste Mexicano. | |
| VENEZUELA-02B | Soybean yield response to nitrogen, phosphorus and potassium in savanna soils of Venezuela | |
