Agricultural field work vehicle

An agricultural field work vehicle capable of performing automatic steering to travel along a target route, the agricultural field work vehicle comprising:

• a steered wheel;
• a steering mechanism including a steering tool capable of accepting a manual operation and operable to perform a steering operation to steer the steered wheel;
• an automatic steering controller configured or programmed to change a state thereof between a non-controlling state in which the automatic steering is not performed and an automatic control state in which the automatic steering is performed, and output at least one target steering parameter used to travel along the target route in the automatic control state;
• and
• a steering driver to perform drive control on the steering mechanism based on the at least one target steering parameter when the automatic steering controller is in the automatic control state;
• the steering tool being configured to change a steering amount thereof in conjunction with the drive control performed by the steering driver;
• and
• the automatic steering controller being configured or programmed to perform suppression processing to suppress the at least one target steering parameter in response to a state change from the non-controlling state to the automatic control state.