Growth and Essential Oil Production of Vetiver Plants Under Salinity Condition with Salicylic Acid and Mycorrhiza Application

Aisar Novita, Luthfi Siregar, Rosmayati and Nini Rahmawati

Background and Objective: Salinity is a real challenge in agricultural crop production in many regions. Several strategies should be applied to reduce the adverse effects of salinity and increase crop tolerance. Therefore, more than one application can support the mitigation of salinity stress in vetiver plants through the application of salicylic acid and mycorrhiza. This study aims to evaluate the growth and production of vetiver under salinity conditions with the application of salicylic acid and mycorrhiza. Materials and Methods: This study used a factorial completely randomized design with 3 factors. The first factor is salinity consisting of 4-5 dS/m salinity and 8-9 dS/m salinity, the second factor is salicylic acid consisting of no salicylic acid, 0.5 mM salicylic acid and 1 mM salicylic acid and the third factor is mycorrhiza consisting of no mycorrhiza, Glomus sp. and Gigaspora sp., where each treatment is made 3 replications. The recorded parameters are plant height, number of leaves, leaf area, number of tillers, root length, root volume, root fresh weight and production of essential oil. All the recorded data were analyzed by using Analysis of Variance (ANOVA). Results: The application of salicylic acid and mycorrhiza had a significant effect on increasing all parameters of vetiver growth and production observed in this study. The results showed that the best of vetiver oil production was obtained with the application of 0.5 mM salicylic acid and Gigaspora sp., mycorrhiza. Conclusion: The use of mycorrhiza species Gigaspora sp., can increase the growth and production of essential oil under salinity conditions. The best essential oil production under salinity condition was obtained with the application of 0.5 mM salicylic acid and Gigaspora sp.

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