This report summarises the results of studies leading to an agronomy of the seaweed Gracilaria chilensis in saline groundwater evaporation basins. An understanding of seaweed farming, physiology and nutrition is based on the existing literature, which is reviewed in this report. There is an enormous
difference between monitoring seaweed growth in a glass aquarium and in a basin excavated in the soil of a salt affected paddock. Not only is there an increase in scale but there are chemical dynamics between soil, saline groundwater and a range of environmental variables that cannot always be predicted. This report is about the field trials for seaweed cultivation in saline groundwaters where the goal has been to achieve a growth rate of Gracilaria greater than 3% per day.