Hawaiian Sugar Planters' Association Experiment Station

The Hawaiian Sugar Planters' Association Experiment Station (also known as HSPA Experiment Station and Experiment Station of the Hawaiian Sugar Planters' Association; 1895–1996) was located in Makiki, Honolulu, Hawaiian Islands. It was established in 1895 by the Hawaiian Sugar Planters' Association (HSPA), an unincorporated, voluntary organization. With its establishment, there began a systematic examination of soils, together with the collection of data as to rainfall and temperature, which was the basis of much of the fertilizing that was done since that time. It was due in a very great measure to these investigations of the conditions of each plantation that the fertilizers used in one district were different from those used in another district, and that there was a constant tendency toward high-grade fertilizers which were specially prepared for the plantations where they were to be applied.^[1] In 1996, the HSPA Experiment Station became a part of the Hawaiian Agriculture Research Center (HARC).