Ammonification of Amino Acids in Field, Grassland and Forest soils
Ammonification rates of different amino acids were studied in order to evaluate the physiology and the function of microbial community in nitrogen cycling in field, grassland and forest soils. Special attention was paid to changes in N03 - content during the experimental course and effects of an addition of glucose, NH4 + and N03 -. The rates of ammonification varied between amino acid used and soil. Highest ammonification rates were observed in case of glutamine addition. However, changes in N03 - content were recognised for several soils particularly during the ammonification experiment with glutamine. Addition of glucose and NH4 + generally decreased ammonification. In contrast, NO3 - addition may also increase ammonification rates of amino acids in soil.
Key wordsAmino acids ammonification arginine alanine asparagine glutamine nitrate content glucose addition microbial physiology soil
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