Validation of Soil‐Test‐Based Phosphorus and Potassium Fertilizer Recommendations for Flood‐Irrigated Rice

Soil testing is a widely accepted practice for evaluating soil‐P and soil‐K availability but can be inconsistent for making accurate fertilizer‐P and fertilizer‐K recommendations. Our research objectives were to assess the accuracy of established soil‐ and tissue‐P and ‐K concentration interpretations for predicting flood‐irrigated rice ( Oryza sativa L.) yield response to fertilization at three levels of significance ( p ≤ 0.05, 0.10, and...