As a limitation of Daycent (the principle model in the cropland accounting activity), the model will only take into account one 'X' event per day where 'X' is a harvest, tillage, fertilizer, organic amendment, or irrigation events. Daycent will take the last entry for that day.
For example, the user below has two [different] fertilizer events for 2/14/00 and three [different] fertilizer events for 11/15/00. Daycent will only use the two events shown in green meaning that the model assumes the crop receives significantly less nitrogen per acre.
How to accommodate? Two options:
- Option 1: Combine those events falling on the same day into one single event (in the case above, one event on 2/14 and the other on 11/15) using mixed blends as your fertilizer type and adding total N applied.
- Option 2: Change the dates to 2/13, 2/14, 11/13, 11/14, & 11/15, respectively. This would lead to a negligible change in your report.