Final answer:
Identify barriers to accessing healthcare services, increase awareness of available healthcare services, and provide language support for healthcare information.
Step-by-step explanation:
When developing a plan to improve health care delivery for migrant farmworkers, the rural community health nursing should focus on identifying barriers to accessing healthcare services. This will help in understanding the challenges faced by the minority group and finding ways to address them. The goal should be to increase awareness of available healthcare services and provide language support for healthcare information to ensure effective communication and understanding.