1. 
   Chernozem
   Black earth soils have a high clay content which changes little with depth; usually neutral or alkaline.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   chernozem
   (from the article `Dokuchayev, Vasily Vasilyevich`) ...the Novo-Aleksandr Institute of Agriculture and Forestry, adding departments of soil science and plant physiology. He organized soil surveys ... [9 related articles]
   Found op http://www.britannica.com/eb/a-z/c/65
   
   
3. 
   Chernozem
   one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Chernozems (from the Russian words for `black ...
   Found op http://www.britannica.com/eb/a-z/c/65
   
   
4. 
   Chernozem
   Chernozem (from чернозём, transliterated: chernozyom, meaning: black soil), or "black earth", is a black-coloured soil containing a high percentage of humus (7% to 15%), and high percentages of phosphoric acids, phosphorus and ammonia.{cn|date=January 2012} Chernozem is very fertile and pro...
   Found op http://en.wikipedia.org/wiki/Chernozem
   
   
5. 
   chernozem
   chernozem (cher'nuzem") or black earth,variety of soil rich in organic matter in the form of humus. It is generally a modified type of loess. True chernozem is black in color, but there are various grades, shading off into gray and chestnut-brown soils. It forms in areas that have cold winte...
   Found op http://www.infoplease.com/ce6/sci/A0811698.html
   
   
6. 
   Chernozem
   Chernozem (black earth) is a type of soil that is characteristic of the continental interiors of the mid-latitudes, in which grassland formed the natural vegetation. Chernozems occur across the Russian steppes and parts of Romania and Hungary; these soils also occur in North America. The deep surfac...
   Found op http://www.probertencyclopaedia.com/browse/GC.HTM
   
   

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