Ireland's agriculture minister Shane McEntee described the move as "a positive step towards providing the levels of expertise needed to develop the organic horticulture sector in Ireland to its full potential".
The course will be accredited by the university's school of biological, earth and environmental sciences, established last year.
The school has already investigated the use of seaweed extracts for increasing crop yield and disease resistance, biological control of crop pests, optimisation of vermi-composting and the use in horticulture of shellfish waste, wood ash, potato peel and other waste streams.