Previous research conducted at Purdue University at beginning flowering and pod set growth stages updated defoliation loss tables for current variety genetics, management practices, and climate. However, it also brought into question the defoliation loss tables for later reproductive stage soybean. This project occured in Iowa and Indiana (Shaun Casteel). Defoliation events were timed at full pod set (R4) and beginning seed fill (R5) reproductive stages.
The quality and moisture content of the seeds at harvest can significantly influence profitability. We collect corn and soybean seeds from field experiments to develop models to improve our ability to predict moisture content at harvest for new corn hybrids and soybean varieties.
The overall goal of this project is to identify management practices to increase soybean yield potential and close gaps in Iowa. One of the outputs of this project is the Soybean Planting Decision tool.