Through increased use of soil testing and plant analyses, micronutrient deficiencies have been verified in many soils. Some reasons limiting the incidental additions of micronutrients include:
- High-yield crop demands remove micronutrients from the soil
- Increased use of high-analysis NPK fertilizers containing lower quantities of micronutrient contaminants
- Advances in fertilizer technology reduce the residual addition of micronutrients.
These factors contribute to the significant increase in usage of and need for micronutrients in order to achieve full balanced nutrition.