Productivity of a two meadows, on a loamy and a sandy soil respectively, were determined at the Otradnoe study site from 1969 to 1972/73. Measurement of monthly dynamics of above-ground and below-ground plant biomass were made for each growing season (April-October). Above-ground net primary production was estimated for each year. These data are part of a series of grassland data sets recently ... assembled and checked by Dr. Tagir Gilmanov, which cover a wide range of climate and "continentality" (increasing maximum summer temperatures, decreasing precipitation) from the North-West to the South-East of the Commonwealth of Independent States (former USSR). Climate data for this site are also available: see Any Other Relevant Information in section 11 of this document. More information on the entire Net Primary Production Project can be found on the NPP homepage.