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Mollisol is a soil type which has deep, high organic matter, nutrient-enriched surface soil (), typically between 60 and 80 cm (24-31 in) in depth.This fertile surface horizon, called a mollic epipedon, is the defining diagnostic feature of Mollisols.
Williams Prairie, a 10-acre (40,000 m2) remnant prairie preserve west of Houston in Waller County, Texas, USA. The ecoregion covers an area of 77,425 km 2 (29,894 sq mi), extending along the shore of the Gulf of Mexico from southeastern Louisiana (west of the Mississippi Delta) through Texas and into the Mexican state of Tamaulipas as far as the Laguna Madre.
Mollisols, shown here in dark green, are a good (though not the only) indicator of high soil fertility. They coincide to a large extent with the world's major grain producing areas like the North American Prairie States, the Pampa and Gran Chaco of South America and the Ukraine -to-Central Asia Black Earth belt.
The official state grasses of Texas and Oklahoma are found in the prairies of the Rolling Plains. ... smooth stalks with hairy nodes, and 10– to 20-inch, flat, blue-green to green leaves ...
In the US, Mollisols occur mostly on the Great Plains, and in some areas of the west. There is a considerable variety of Mollisols, including soils very closely resembling the Chernozem ("black earth") of eastern Europe (parts of Russia, Ukraine and neighboring regions), and the Chernozemic soils of the Canadian prairies.
Low relief landscapes, such as the various types of grasslands found throughout the Great Plains, have an effect on rainfall distribution. Rainfall in this ecoregion increases from west to east resulting in various types of prairie grasslands. Topography in the Great Plains actually affects soil composition in areas of different elevation.
Since the origin of agriculture, humans have understood that soils contain different properties which affect their ability to grow crops. [4] However, soil science did not become its own scientific discipline until the 19th century, and even then early soil scientists were broadly grouped as either "agro-chemists" or "agro-geologists" due to the enduring strong ties of soil to agriculture.
Move over, Wordle and Connections—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity fans can find on ...