ANALISIS KERAGAMAN FUNGI MIKORIZA ARBUSKULAR (FMA) DI BEBERAPA VEGETASI LAHAN GAMBUT

Abstract

West Kalimantan is one of the provinces in Indonesia which has a large area of ??peatland. Peatlands are often faced with several constraints, ranging from the soil's physical, chemical, and biological characteristics to less than optimal agroecosystems for increasing crop productivity. Increasing the productivity of peatlands for agriculture can be done by intensification and rehabilitation. Efforts can be made for peat rehabilitation by utilizing soil microbes in the form of arbuscular mycorrhizal fungi (AMF). Microbes of this type can help plant growth. To find out the AMF genus in some peat vegetation, a diversity analysis is needed. This study aims to analyze the diversity of species and the number of AMF in several peatland vegetation. This study uses a descriptive exploratory method. Soil samples were taken by purposive sampling. The results showed that the highest AMF diversity level was found in the treatment with pineapple inoculums with a diversity index value of 2.08%. Three types of AMF were found: the genus Glomus sp, Gigaspora sp, and Acaulospora sp, and entered into the medium diversity category. Meanwhile, the level of diversity of ferns and grasses falls into the low category, namely 1.2%. Furthermore, the content of the type and number of AMF spores found in the root zone of peat vegetation was highest at the source of pineapple inoculum, with the number of AMF spores found as many as 97 spores, with 50 g of soil samples each. Whereas in the fern media, there were 65 spores, and there were 22 spores in grass media.