Seeding Rate/ Varieties/ Row Spacing, Medium Yield
This experiment was conducted at Lake county. Soybean variety 19BA23 was planted in 30 in. rows in strips on April 23, 2020. This experiment consists of two different seeding rates- lower (100K to 150K) and normal (150K to 180K) comparison and both normal seeding rate had two replications whereas lower rate had only one. Drone Imagery was collected using a fixed-wing AgEagle drone on July 28 and August 25 of 2020.
On average, a lower seeding rate resulted in a yield reduction of -0.63 bu/ac, however it was not statistically significant (Table 1). The GNDVI scale, which ranges from -1 to 1, was calculated using drone imagery. GNDVI values closer to 1 indicate improved plant health and yield, while lower values indicate the opposite. In first flights, the average GNDVI in the higher seeding rate strip was highest (Table 2) whereas it just oppositive on second flight. More research at multiple sites and replication are required to better explain the contrast between two different seeding rates.