Aktivitas Mikroorganisme pada Tanah Hutan Bekas Letusan Gunung Sinabung di Kabupaten Karo

Abstract

PUPUT SARAH: The activity of soil microorganisms on the former eruption Sinabung in Karo district. Supervised by DENI ELFIATI and DELVIAN Volcanic ash released when the eruption has a pH that is acidic, thus affecting the number and activity of microorganisms in the soil. Therefore conducted this study to determine the activity of soil microorganisms in the former eruption of Mount Sinabung in Karo. Measurement of total soil microorganisms is done by using Agar Cawan metod, while the measurement of the activity of soil microorganisms was conducted using jar and measured by titrimetic method. The result of the research showed that the higher of the PH then the amount of microorganism are getting so much and instead. As well as , the higher of C- organic then so higher activities of micro organism in the soil and instead too. Value respiration on land affected by volcanic ash of Mount Sinabung at a depth of 0-5 cm is 0.96. Value respiration on land affected by volcanic ash of Mount Sinabung at a depth of 5-20 cm is 1.16. Value respiration on land that is not affected by volcanic ash of Mount Sinabung is 1.52.