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| WA-09F | Influence of Tillage and Phosphorus Rate in Placement on Corn and Bean Yields | |
| WA-14 | Root Responses to Fertilizer Placement and Source | |
 | field variability |
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| foliar fertilization |
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| fruits |
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 | high yields |
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| Eastern Canada & Northeast 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 China |
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| Northeast India & Bangladesh |
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| Northern Latin America |
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| Southeast Asia |
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| Southeast U.S. |
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| Southern India & Sri Lanka |
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| Southwest China |
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| Western U.S. |
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| irrigation |
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