Manure Ground

Adds deposited manure to fields when using manure spreaders. Instead of flat ground textures, manure actually lies on the soil.

Features:
- Manure is deposited directly on the field during spreading.
- Higher application rates of manure result in more manure on the ground.
- Deposited manure cannot be collected back from the field.
- Option in Game Settings to hide the standard flat manure texture.

The appearance and shape of deposited manure may vary slightly depending on the map's terrain configuration.