IFA 4226 C — portable device for rapid analysis of corn condition, equipped with an optical sensor similar to the one used in the GreenSeeker RT200 system. This sensor emits brief pulses of red and infrared light, then measures the amount of reflected light, allowing an assessment of plant growth and health. Measurement results are expressed in standardized vegetation difference index (NDVI) units, where higher values indicate good corn condition, while lower values may suggest the need for nitrogen fertilization. The device operates in real-time directly in the field, providing immediate recommendations for nitrogen application specific to the corn variety. Using the NDVI method, the device determines plant nitrogen requirements and overall crop condition, enabling agronomists and farmers to make informed decisions regarding fertilization. This helps avoid excessive fertilizer application, which could negatively impact yield. Thus, IFA 4226 C is an effective tool for monitoring corn health and optimizing agronomic practices. Its use contributes to increased yield through precise and timely plant condition monitoring and real-time agronomic adjustments.