The effect of ameliorant application in abundance of soil microbiology on coal mine reclamation land at Muaro Jambi Regency of Jambi Province

Abstract

Efforts to restore the environmental conditions of ex-coal mine land through reclamation can be monitored through land quality indicators. Soil quality is a soil condition that describes the soil as healthy, which has good physical, chemical and biological properties of soil, and high productivity in a sustainable manner. The quality of soil in biology is largely determined by the number of micro-bodies in the soil (especially fungi, actinomycetes, and bacteria). This aim of this study is to describe changes in soil quality from the abundance of several types of soil microorganisms after the application of ameliorant and re-vegetation on coal mine land in Muaro Jambi Regency, Jambi Province. This activity was carried out in the coal mine reclamation land that had been reclaimed/stockpiled at PT Gea Lestari, Tanjung Pauh Village, Mestong District, Muaro Jambi Regency from January to December 2016. The study design used was Randomized Block Design with treatment factors: 10 tons of manure/ha and manure 10 tons/ha + mycorrhizae 30 g/plant. Each treatment was repeated 3 times. The plants used are corn, soybeans, Setaria and ground cover plants (leguminoceae) among conservation plants. Samples obtained from 3 replications were composite for biology analysis of the soil. The results of the biological analysis of the soil obtained various results both at the initial conditions of the soil at the study site and after the results of the assessment. The initial conditions of the land indicate that the reclamation land of former coal mines has a diversity of soil microorganisms, namely cellulotic fungi, cellulotic bacteria, mycorrhizae, propragules fungi and heterotrophic aerobic bacteria and has C-mic activity. Re-vegetation on reclaimed land of ex-coal mines shows indicators of macro-fauna and microorganism life that increase in number and activity.