{"product_id":"united-states-map-1931-soil-groups-print-corn-belt-great-plains-great-basin","title":"United States Map 1931 Soil Groups Print - Corn Belt, Great Plains, Great Basin","description":"\u003cp\u003eFrancis J. Marschner compiled this Great Soil Groups map, Soils Plate 2, for the U.S. Department of Agriculture's Atlas of American Agriculture, a federal reference on the country's land, climate, soils, and vegetation prepared under O.E. Baker of the Bureau of Agricultural Economics and printed in Washington. Drawn in 1931 at a scale of one to eight million and finished in full color, the sheet classifies American soils into major groups such as podzol, chernozem, and prairie soils, each distinguished by its own shade across a detailed legend. The atlas as a whole was compiled during the early 1930s, a period when the Great Depression had sharpened the federal government's interest in efficient land use and scientific soil management.\u003c\/p\u003e\n\u003cp\u003eThe eastern and northern states appear largely in the podzol classification, the leached, naturally acidic soils that had formed under centuries of forest cover before farmers cleared them for cultivation. A broad band running through the central plains carries the chernozem and prairie soil designations, the dark, organically rich ground that made the Corn Belt and wheat states among the most productive farmland in the country. The arid Southwest and Great Basin show a very different set of classifications tied to their much lower rainfall. Together the three regions and their contrasting soil groups sketch the physical basis for why American agriculture developed so differently from one part of the country to another.\u003c\/p\u003e\n\u003cp\u003eSoil science specifically is what sets this sheet apart from its companions, which suits a collector or student of American land-use history and makes a fitting gift for a farmer, gardener, or geographer curious about the ground under a particular region. The store also carries six companion sheets from the same Atlas of American Agriculture, covering natural vegetation, parent materials of soils, physical features, average annual precipitation, summer temperatures, and last spring frost dates; this sheet is the one most focused on classifying soil types themselves rather than the climate or vegetation that shaped them. It's printed unframed and available in a range of sizes to fit whatever wall it's headed for.\u003c\/p\u003e","brand":"TheMapVault","offers":[{"title":"16x20 inch - UNFRAMED","offer_id":58514767544651,"sku":"1504-16x20","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"A2 (42x60cm) - UNFRAMED","offer_id":58514767577419,"sku":"1504-A2","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"18x24 inch - UNFRAMED","offer_id":58514767610187,"sku":"1504-18x24","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"50x70 cm - UNFRAMED","offer_id":58514767642955,"sku":"1504-50x70","price":30.0,"currency_code":"GBP","in_stock":true},{"title":"A1 (60x84cm) - UNFRAMED","offer_id":58514767675723,"sku":"1504-A1","price":40.0,"currency_code":"GBP","in_stock":true},{"title":"24x32 inch - UNFRAMED","offer_id":58514767708491,"sku":"1504-24x32","price":40.0,"currency_code":"GBP","in_stock":true},{"title":"70x100 cm - UNFRAMED","offer_id":58514767741259,"sku":"1504-70x100","price":50.0,"currency_code":"GBP","in_stock":true},{"title":"75x100 cm - UNFRAMED","offer_id":58514767774027,"sku":"1504-75x100","price":50.0,"currency_code":"GBP","in_stock":true},{"title":"A0 (84x119cm) - UNFRAMED","offer_id":58514767806795,"sku":"1504-A0","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0907\/2456\/5323\/files\/SKU1504.jpg?v=1789683743","url":"https:\/\/www.themapvault.com\/products\/united-states-map-1931-soil-groups-print-corn-belt-great-plains-great-basin","provider":"TheMapVault","version":"1.0","type":"link"}