Soil and plant testing programs as a tool for optimizing fertilizer strategies

摘要: Summary Soil and plant testing programs are still based on ‘trial error’ methods lack scientific underpinning in terms of relevant soil chemical nutritional processes, site-specific. The valuable when the objective is to diagnose predict deficiencies nutrients. less for refined fertilizer strategies, like Integrated Nutrient Management, which essential near future satisfy changing agricultural, environmental, economic legislative boundary conditions. A more approach appears desirable. To reduce undesirable side-effects fertilization environment, emphasis should be placed type timing method application.