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Changes in the Concentration of Soluble Anions in Compost During Composting and Mushroom ( Agaricus bisporus ) Growth
Author(s) -
Iiyama Kenji,
Stone Bruce A,
Macauley Barry J
Publication year - 1996
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199610)72:2<243::aid-jsfa648>3.0.co;2-u
Subject(s) - chemistry , agaricus bisporus , mushroom , oxalate , nitrate , formate , phosphate , compost , chloride , agronomy , inorganic chemistry , food science , biochemistry , organic chemistry , catalysis , biology
The changes in the concentration of nitrate, phosphate, chloride, sulphate, formate, acetate and oxalate anions extracted with water from conventional compost during composting and mushroom growth, and mushroom fruit bodies during cropping, were measured using an ion exchange chromatograph and a pulsed electrochemical detector. The addition of gypsum at Phase I in conventional composting dramatically increased the content of sulphate but lowered the content of oxalate (dry matter basis). Chloride in compost increased gradually during composting and mushroom growth probably due to its introduction in water used to irrigate the crop. Phosphate increased during the early stages of composting but decreased in spawning and fruit body formation. In fruit bodies, the relative content of boiling water extract decreased in successive flushes. Individual anions, acetate and oxalate increased steadily, phosphate and chloride decreased gradually and sulphate and nitrate first decreased steeply and then more slowly. Formate did not change. Phosphate, acetate, chloride and oxalate were higher in small buttons than in large buttons, but there were no differences for sulphate, nitrate or formate.