Crop consumption can be reduced in several ways. Below you’ll find an overview of each method exactly as described in the original article, as well as the specific effects of the Roman-only Horse Drinking Trough.
Diet Control Artifact
When active, this artifact reduces the crop consumption of your troops by 25% to 50%, depending on its type and tier. You can find more information in the Artefacts article.
World Wonder Villages
Once construction plans appear, units that are stationed inside a World Wonder village will consume only 50% crop. For more details, see the World Wonder article.
Horse Drinking Trough (Romans Only)
The Horse Drinking Trough is a Roman-specific building. It reduces both the training time and crop consumption of all cavalry in the village.
Effects:
Training time for all cavalry is reduced by 1% per level.
Equites Legati consume one crop less at level 10.
Equites Imperatoris consume one crop less at level 15.
Equites Caesaris consume one crop less at level 20.
Prerequisites:
Stable level 20
Rally Point level 10
Roman village
In the table below you can find the construction costs and time as well as the training duration for each level of Horse Drinking Trough.