Utilization of soil ameliorant and arbuscular mycorrhizal fungi to improve the growth of Lagerstroemia speciosa pers. in subsoil media

Abstract

Abstract Planting media in nurseries still utilizes topsoil because it contains high nutrients and organic matter. However, the availability of topsoil in nature is limited due to mining activities or infrastructure construction. The topsoil alternative is subsoil, which is abundant in nature but less fertile. Subsoil fertility can be improved by adding soil ameliorants such as eggshell waste (ESW) with compost and inoculation of Arbuscular Mycorrhizal Fungi (AMF). This research aims to analyze the growth response of Lagerstroemia speciosa with the combination of soil ameliorant and AMF in subsoil media. This research used a completely randomized design with a factorial pattern with two treatment factors: soil ameliorant and inoculation of AMF. The parameters observed were height, diameter, leaf greenness Index SPAD, biomass, shoot root ratio, and seed quality index of seedlings. Data were analyzed using analysis of variance and if there was a significant effect, it was continued with the Duncan Multiple Range Test at a 5% level. The research showed poor results in the growth of L. speciosa in subsoil media without treatment. The best treatment to increase the growth of L. speciosa is a combination of 10 g ESW, 20 g compost, and inoculation of AMF.

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