Look up: hardpan

1. Hardpan
   a hard, compacted, often clayey layer of soil through which roots cannot grow.
   Found on http://www.encyclo.co.uk/local/20003
   
   
2. Hardpan
   Compacted soil, sometimes new, created by construction. Water will run off and plant roots can not penetrate the layer. Can be broken up.
   Found on http://www.emilycompost.com/garden_gloss
   
   
3. Hardpan
   A horizon of the soil that is hardened or cemented.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
4. hardpan
   a) generally, any hard and/or compact(ed) layer; b) more particularly, a chemically indurated layer, the soil particles being cemented with organic matter, SiO2,sesquioxides or CaCO3 Category: Building industry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
5. Hardpan
   Hard'pan` (härd'păn) noun The hard substratum. Same as Hard pan , under Hard , adjective
   Found on http://www.encyclo.co.uk/webster/H/14
   
   
6. hardpan
   <botany, ecology> A very dense soil layer caused by compaction or cementation of soil particles by organic matter, silica, sesquioxides (aluminum and iron) or calcium carbonate, for example. ... (09 Oct 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
7. hardpan
   noun crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
8. Hardpan
   • (n.) The hard substratum. Same as Hard pan, under Hard, a.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. Hardpan
   Impervious layer found within the soil. It can result from the precipitation of iron, illuviation of clay or the cementing of sand and gravel by calcium carbonate precipitates.
   Found on http://www.physicalgeography.net/physgeo
   
   
10. hardpan
    hardpan, condition of the soil or subsoil in which the soil grains become cemented together by such bonding agents as iron oxide and calcium carbonate, forming a hard, impervious mass. It is disadvantageous to farming, interfering with the circulation of moisture in the soil and with the growth of r...
    Found on http://www.infoplease.com/ce6/sci/A08227
    
    
11. Hardpan
    Hard, usually bare, ground conditions.
    Found on http://en.wikipedia.org/wiki/Glossary_of
    
    
12. Hardpan
    The areas in rough, fairways, or other areas with an exception of hazards, having hard ground, as a result of compacting of the soil is called hardpan.
    Found on http://www.buzzle.com/articles/golf-term
    
    
13. Hardpan
    :For the geography term, a dry terminus of an internally drained basin in a dry climate (i.e. salt flat/playa), see Dry lake. In soil science, agriculture and gardening, `hardpan` or `ouklip` is a general term for a dense layer of soil, usually found below the uppermost accessdate = 2007-05-2...
    Found on http://en.wikipedia.org/wiki/Hardpan