Historical International Contribution of USDA Soil Survey.

This year USDA celebrates its 150 year anniversary. This celebration is an opportunity to reflect on the contribution of US soil scientists to the development of soil survey and classification in the world. Soil survey was officially recognized 40 years after USDA was created. Soil survey leaders realized the value of exchanging science and technology with the international community. Effort was made to examine soils across the globe and relate those observations to U.S. soils. Soil survey leaders also contributed to international meetings from the first international society of soil science meeting in 1927 in Washington, D.C. to the 19th World Congress of Soil Science in Australia.