KARAKTERISTIK DASAR POPULASI BAKTERI PENAMBAT NITROGEN NON-SIMBIOTIK PADA LAHAN GAMBUT BEKAS KEBAKARAN

Abstract

Nitrogen is an macroessential nutrient for plant growth. Insufficient nitrogen or nitrogen elements, the plant will be upnormal. The availability of nitrogen can be obtained through one of the microbes in the soil, namely nitrogen fixing bacteria (NFB) that is capable of fixing free nitrogen, including symbiotic and non-symbiotic. This study aimd to describe the density of population and the basic characteristics of NFB in burnt peatland Kuala Dua village. The method was in soil sampling with systematic sampling. Bacteria isolation using yeast extract mannitol agar (YEMA) media by using the pour plate method. The density of bacterial population was calculated by count pour method. The result showed tha the higest population density in peat from at distance of 80 m from the edge of the trench with a depth of 0-20 cm as much (52.107cfu/g soil), while a low population density was found at a distance of 20 m from the edge of a trench with a depth of 20-50 cm by much (15,5.107cfu/g soil). The bacterial population in burnt peatland fall was categorited the high. there potential can developed to support the restoration of peatland ecosystems originating from burnt peatlands.Keywords: charakteristics, burnt peatlands, nitrogen fixing bacteria, restoration.