Nutrient-film culture

Nutrient-film culture is a specialised form of soilless culture. The plants are grown in shallow channels containing a flowing nutrient solution which is continuously recirculated. Basic features of the system, which has considerable commercial potential, are described, and the merits of various materials used in its construction discussed. In addition, methods for maintaining nutrient concentrations in the recirculating solution and factors influencing the oxygen content of the solution are outlined. Advantages of the system include the efficient use of water and the avoidance of expensive processes associated with soil management. The yield and quality of protected crops grown in nutrient-film culture are at least as good as, and often superior to, those grown by more conventional methods.