USDA launches production, supply and demand database site - PSD - Trade Notes - Brief ArticleWAHYUDI, Yudi
A soil “knowledge base” centered around theNational Cooperative Soil Survey(NCSS) standards. These are standards developed and maintained by the United States Department of Agriculture Natural Resources Conservation Service (USDA-NRCS) Soil and Plant Science Division (SPSD). They are defined in the...
Particle size distributionSoil textureSichuan basinFor better use of soil particle size distribution (PSD) models and expand the use of large database held by national Soil Surveys (Katchinski's scheme) in China, 12 PSD models were proposed as the function of cumulative mass percentage of ...