The Importance of Tissue Testing
The application of micronutrients during early crop growth stages can result in some yield increase. That’s why we recommend tissue testing for farmers, who are interested in pushing their yield goals.
When combined with soil testing and yield data, tissue sampling gives us a more complete picture of what nutrients the plant is using and where deficiencies exist. It’s a “real time” look at what nutrient levels are within a plant. Tissue testing is a very useful tool to determine macronutrient uptake including Nitrogen (N), Phosphorus (P) and Potash (K). It also helps determine micro-nutrient uptake including Zinc (Zn), Boron (B), Sulfur (S), Maganese (Mn), Copper (Cu) and Iron (Fe).
Tissue sampling can be done at any stage, however, we recommend testing at these three times during the growing season:
- Corn: V4-V6, V14 to tassel, and R2
- Soybeans: V3, R1, and Pod Fill