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 | soil testing |
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| ZIMBABWE-01 | Evaluating the Impact of Soil Fertility Heterogeneity on Maize Nutrient Requirement and Productivity in Smallholder Farming Systems | |
| [Replication or Save Conflict] | | |
| Australia & New Zealand |
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| ANZ-09 | Better Fertilizer Decisions for Crops | |
| Eastern Europe & Central Asia |
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| RUSSIA-01 | Improvement of recommendations on potash fertilizer use and adjustment of currently used soil K test interpretation classes in intensive cropping systems | |
| UKRAINE-01 | Evaluation of the potassium status of arable soils in Ukraine on the basis of modern soil diagnostic techniques and development of recommendations for the rational and efficient application of potassium fertilizers. | |
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| NE-14 | Soil Test P Level and Yield Potential | |
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| NANJING-12 | Improvement method and classification system for evaluating soil available K and plant K status for rice and winter wheat K fertilization | |
| Southern and Eastern Russia |
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| IPNI-41 | Improvement of maize and soybean mineral nutrition on a calcareous common chernozem | |
| Southern India & Sri Lanka |
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| [Replication or Save Conflict] | | |
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| ARGENTINA-27 | Long-term Nutrient Management Network for Southern Buenos Aires Province | |
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| CA-33 | Soil Testing Verification in the Fall River Valley, CA | |
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| Great Plains U.S. |
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| KS-23F | Effect of Long Term Nitrogen, Phosphorous and Potassium Fertilization of Irrigated Corn and Grain Sorghum | |
| Southeast U.S. |
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| TN-21 | Improved Plant Response to Potash Fertilization Through Control of Seedling Diseases | |
| soybeans |
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| Eastern Europe & Central Asia |
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| RUSSIA-01 | Improvement of recommendations on potash fertilizer use and adjustment of currently used soil K test interpretation classes in intensive cropping systems | |
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