Application of different various species of fungi to increase growth of Avicennia marina 300 m from the coastline in Belawan and Pulau Sembilan

Abstract

Mangrove is a typical ecosystem that lives in areas with high salinity and tidal effects. Mangrove has the ability to absorb organic and non-organic matter produced by decomposing microorganisms derived from decomposition of leaf litter or other decomposed material. This research can provide information on the species of fungi are able to increase growth of A. marina. This research was conducted from August to October 2017 using a completely randomized design (CRD) which consists of 4 treatments with ten replicates and with two locations. Fungal species used were Aspergillus niger, Aspergillus sp. 2, Aspergillus sp. 1 and the control as a comparison. Fungi give effect to the height increase of A. marina plants with an average height of 24.64 cm on Pulau Sembilan and 27 cm in Belawan. The total dry weight of plants has an average value of 11.77 g on Pulau Sembilan and 11.97 g in Belawan. The average diameter obtained from fungi treatment on Pulau Sembilan is 0,48 cm and in Belawan is 0.56 cm. The average leaf width that occurred on Pulau Sembilan was 4.82 cm and 5.03 cm in Belawan. Aspergillus niger is the most influential fungus on the growth of A. marina seedlings.