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| TX-41F | Response of Cotton to Potassium in the Texas Blacklands | |
| TX-45F | Potassium Effect on Grapefruit Carotenoids and Vitamin C | |
| TX-46F | Potassium Requirements for Narrow Row Cotton in the Texas Blacklands | |
| TX-47F | Effect of Potassium Fertilizers on Hybrid Bermudagrass Yields and Stand Decline | |
| TX-49F | Determination of the Effect(s) of Fall Fertilization of Bermudagrass with Potassium | |
| TX-51F | Foliar Applied Potassium to Fall and Spring Grown Muskmelon | |
| TX-52 | Using Supplemental Foliar Potassium Fertilization to Improve the Nutritional Quality and Stress Tolerance of Muskmelon | |
| TX-53 | Evaluation of KMag and KMag + P Compared to Muriate of Potash for Production of Tifton 85 Bermudagrass on Coastal Plain Soils | |
| TX-54 | Assessment of Potassium Fertilizer Management in Irrigated Cotton | |
 | 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 Great Plains |
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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 | |
| ECUADOR-03 | Fertilizer and Irrigation Management Effects on the Growth and Yield of Oil Palm in Ecuador | |
| ECUADOR-05 | Banana yield response to high plant density and fertilizer rates | |
| 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 | |
| GUATEMALA-04 | Sugarcane response to potassium fertilization in Guatemala | |
| MEXICO-03 | Effect of nitrogen and potassium fertilizer on yield and quality of broccoli and on residual soil fertility | |
| MEXICO-04 | Potassium and agricultural dolomite lime interactions on corn yield in southern Mexico | |
