THE ROLE OF ARBUSCULAR MYCORRHIZAL FUNGY (SCLEROCYSTIS SP) AND LEVEL OF WATER SUPPLY TO PLANT GROWTH CITRONELLA GRASS (ANDROPOGON NARDUS L.) IN ULTISOL

Citronella grass (Andropogon nardus L.) is an essential oil producing plant from the Gramineae. The research was conducted at the Greenhouse, Faculty of Agriculture, Universitas Andalas, Padang, from October 2017 to January 2018. The research aimed to obtain the best interaction between FMA Sclerocystis sp. and the level of water given, to get the best effect of the Sclerocystis sp. FMA, and to get the best effect of the level of water supply for the growth and yield of citronella grass. The study was arranged in Factorial in a Completely Randomized Design (CRD) consisting of 2 factors. The first factor was giving of FMA which consisted of two levels, namely without FMA and Sclerocystis sp. FMA. The second factor was the level of water supply which consists of 100%, 75%, and 50% field capacity. Each treatment was repeated 3 times. Data were analyzed by analysis of variance if F-count was greater than F-table, followed by DNMRT test at 5% level. The results showed that there was an interaction between the giving of FMA Sclerocystis sp 85 grams and the level of the water supply of 50% field capacity to the growth and yield of citronella grass. The combination was able also to increase canopy dry weight and root canopy ratio. The giving of FMA Sclerocystis sp affects the growth and yield of citronella grass. Giving the water level capacity for 100%, 75%, and 50% field capacity did not affect the growth and yield of citronella grass.