The goal of the study was to estimate wheat yield by measuring plant health using a special tool. The researchers monitored wheat fields in different growth stages to see how much nitrogen the plants needed. They found that by tracking the plant's health over time, they could predict how much wheat would be produced at harvest. The study showed that the amount of nitrogen in the plants at certain stages could affect the final yield. This information could help farmers adjust their fertilizer use to match the needs of the wheat crop.