In addition to soil testing, plant tissue analysis is a new tool to help manage and monitor the fertility status of a corn crop. Throughout growth and development, the corn plant requires certain concentrations of nutrients to maintain highest productivity. One element short of the required concentration would limit and reduce the maximum potential of the corn plant.
Most nutrient deficiencies show up as foliar symptoms on the plant leaves.
When diagnosed early enough, corrective measures can be made to eliminate the deficiency. If a nutrient deficiency is suspected or if you want to monitor your fertility program throughout the season, plant tissue analysis is the tool for you. When monitoring your fertility program, have a complete analysis run. The age and condition of the plant and the plant part sampled are extremely important. Guidelines and forms are available at your county Extension office.