Prepared by Ike Ikawa, Nguyen Hue and Russell Yost Soil Orders In Hawaii Andisol Aridisol Entisol Histosol Inceptisol Kula Series, Maui Hilo Series, Hawaii Kawaihae Series, Hawaii Jaucas Series, Maui Papai Series, Hawaii Alakai Series, Oahu Kolekole Series, Oahu Andisols are soils derived from volca- Aridisols are soils of the arid areas or Entisols are least-developed soils show- Histosols are organic soils with a high Inceptisols are soils showing minimal nic ash. The less weathered Kula soil on soils with high salt content. The Kawaihae ing only a weak surface development. The organic matter content in the surface ho- development of soil horizons. The Maui is quite productive, while the Hilo soil soil of the Big Island has features of an calareous Jaucas soil on Maui is an ex- rizon. The Papai soil on the Big Island has Kolekole soil on Oahu is an example. on the Big Island is highly weathered and arid area of light color, low organic mat- ample with sandy texture, and excessive lost almost all of the surface organic mat- requires lots of fertilizers for crop produc- ter, and shallow depth. drainage. ter (OM), but the Alakai soil atop Mt. Kaala tion. on Oahu is high in OM. Mollisol Oxisol Spodosol-like soil Ultisol Vertisol Kawaihapai Series, Oahu Makawele Series, Kauai Halii Series, Kauai Oahu Alaeloa Series, Oahu Haiku Series, Maui Lualualei Series, Oahu Mollisols are fertile soils with high Oxisols are the most weathered soils of Spodosols are soils with leached Al, Fe, Ultisols are highly weathered infertile Vertisols are soils that shrink when dry organic C and high base saturation. the tropics with low nutrient holding ca- and organic materials in the subsoil, show- soils with clay accumulation in the sub- and swell when wet. They usually occur Although the Kawaihapai soil on Oahu is pacity and high Fe and Al oxides. The Halii ing a distinct layer. soils. Examples are Alaeloa soil on Oahu in valleys with poor drainage. They are dark, the Makawele soil on Kauai is red soil on Kauai is an example. and Haiku soil on Maui. fertile, but pose severe limitations for because of Fe oxides. roads, housing, and related uses. The Lualualei soil on Oahu is an example..