Nitrogen Nutrition of Agaricus Bisporus Ⅰ. Form of Inorganic Nitrogen Utilized by Agaricus Bisporus

Abstract

The effect of three inorganic forms of nitrogen, namely nitrates, nitrites and ammonium salts, upon the growth of Agaricus bisorus was studied. No growth was observed when nitrates or nitrites were supplied as the sole source of nitro-gen in a synthetic solution. The fungus utilized ammonium nitrogen within a limited concentration. Dry weight of mycelial mats of Agaricus bisporus decreased when the concentration of ammonium nitrogen increased beyond 1000 mg/l. 1. 本文詳述三種無機態氮素對洋菇生長之情形。 2. 硝酸態及亞硝酸態的氮不能供洋菇生長。 3. 銨鹽類的氮為洋菇之良好氮素源。 4. 銨鹽類的氮在800 mg/l之濃度時最適合洋菇之生長。 5. 銨鹽類的氮超過1000 mg/l時能減低洋菇之生長。