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acid soil

A Dictionary of Plant Sciences | 1998 | | Copyright

acid soil A soil having a pH less than 7.0. Degrees of soil acidity are recognized. Soil is regarded as ‘very acid’ when the reaction is less than pH 5.0. The USDA lists five standard ranges of soil acidity (less than pH 4.5, extremely acid; 4.5–5.0, very strongly acid; 5.1–5.5, strongly acid; 5.6–6.0, medium acid; and 6.1–6.5, slightly acid). Surface soil horizons of acid brown earths have a reaction of pH 5.0 or less.

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MICHAEL ALLABY. "acid soil." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "acid soil." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O7-acidsoil.html

MICHAEL ALLABY. "acid soil." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-acidsoil.html

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acid soil

A Dictionary of Ecology | 2004 | | Copyright

acid soil Soil that has a pH less than 7.0. Degrees of soil acidity are recognized. Soil is regarded as ‘very acid’ when the reaction is less than pH 5.0. The USDA lists five standard ranges of soil acidity (less than pH 4.5, extremely acid; 4.5–5.0, very strongly acid; 5.1–5.5, strongly acid; 5.6–6.0, medium acid; and 6.1–6.5 slightly acid). Surface soil horizons of acid brown earths have a reaction of pH 5.0 or less.

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MICHAEL ALLABY. "acid soil." A Dictionary of Ecology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "acid soil." A Dictionary of Ecology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O14-acidsoil.html

MICHAEL ALLABY. "acid soil." A Dictionary of Ecology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-acidsoil.html

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acid soil

A Dictionary of Earth Sciences | 1999 | | Copyright

acid soil Soil having a pH less than 7.0. Degrees of soil acidity are recognized. Soil is regarded as ‘very acid’ when the reaction is less than pH 5.0. The USDA lists five standard ranges of soil acidity (less than pH 4.5, extremely acid; 4.5–5.0, very strongly acid; 5.1–5.5, strongly acid; 5.6–6.0, medium acid; and 6.1–6.5, slightly acid). Surface soil horizons of acid brown earths have a reaction of pH 5.0 or less.

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AILSA ALLABY and MICHAEL ALLABY. "acid soil." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "acid soil." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-acidsoil.html

AILSA ALLABY and MICHAEL ALLABY. "acid soil." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-acidsoil.html

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