In vitro biological control of Ceratobasidium ramicola by using tannin extracts from Acacia villosa, Myristica fragrans, Acacia mangium, and Calliandra calothyrsus leaves

Abstract

<jats:p>Abstract Ceratobasidium ramicola is a fitopathogenic fungus that harmful and causes various levels of damage on several types of forestry and horticultural crops. The purpose of this study was to examine the effect of Acacia villosa, Myristica fragrans, Acacia mangium and Calliandra calothyrsus leaf extracts as tannin sources related to the in vitro inhibition of Ceratobasidium ramicola growth. The in vitro inhibition was performed by employing solid potato dextrose agar (PDA) medium to obtain the radial inhibition, while liquid potato dextrose broth (PDB) medium was used to obtain the biomass inhibition. Experimental design was based on in time nested-completely randomized design and statistical analysis was carried out with SAS software version 9.1. The result of radial growth inhibition of Ceratobasidium ramicola showed that tannin extracts of A. mangium and M. Fragrans were not significantly different to each other. Treatment of tannin extracts from A. villosa, M. fragrans, A. mangium and C. Calothyrsus with a concentration of 1% were significantly different with other concentrations and resulted the greatest inhibition values. Tannin extract of A. Mangium at 1% concentration produced the greatest radial inhibition by 33.2%. In most cases, the effective inhibition from tannin extract occurred at the 24h of incubation. The greatest biomass inhibition was produced on 1% tannin extract of A. mangium by 64.3%, while the lowest was produced from 1% tannin extract of M. fragrans by 27.0%.</jats:p>

Percentage of importance indice-production unknown: loss and solution sources identification on system

“…This plant is a priority species for the International Union of Forestry Research Organisations (IUFRO) for research and development in tropical areas (Wickneswari and Norwati, 1993). Its wood is of high quality for particleboard, pulpwood, tannin, and timber (Firmansyah et al, 2020). Acacia spp.…”

Distribution pattern of arthropods on the leaf surfaces of Acacia auriculiformis saplings

“…This plant is a priority species for the International Union of Forestry Research Organisations (IUFRO) for research and development in tropical areas (Wickneswari and Norwati, 1993). Its wood is of high quality for particle board, pulpwood, tannin and timber (Firmansyah et al, 2020).…”