Respon Vetivera (Vetiveria zizanioides Linn.) Akibat Salinitas Tanah Berdasarkan Karakteristik Morfofisiologi

Abstract

This study aims to determine the effect of salinity on the morphophysiological characteristics of vetivera grass and determine the optimal level of salinity on the growth of vetivera grass based on morphophysiological. Research was conducted from June 2021 to December 2021 at the Laboratory of Plant Physiology and Tissue Culture Faculty of Mathematics and Natural Sciences, Greenhouse and Central Laboratory of the Faculty of Agriculture, University of North Sumatera. Study used a completely randomized design (CRD) with treatments of salinity 0, 640, 1280, 1920,2560, 3200, 3840, 4480, 5120, 5760 and 6400 ppm. Soil salinity had a significant effect on the relative growth rate variables at 4MSP5MSP and 5MSP-6MSP. The respons of some variables: plant height, number of clump, number of leaves, root length, root biomass, shoot biomass, shootand root ratio, chlorophyll a, chlorophyll b, total chlorophyll and water use efficiency (EPA) not show significantly different due to soil salinity. Vetivera grass is able to respond to soil salinity treatment from 0 ppm to 6400 ppm and can be adaptize to the environment proven by the morphophysiological characteristics.