Effectiveness of Bacillus spp. To Increase Resistance of Cavendish (Musa acuminata) Against Blood Disease (Ralstonia syzygii subsp. celebensis)
Serli, Baharuddin and Muhammad Junaid

Hasanuddin University

Abstract

Blood disease at banana caused by Ralstonia syzygii subsp. celebensis and made financial loss to farmers, with banaas become sick or produced fruit where no one can consume it. This study aims to determine the effect of Bacillus spp. to increase resistance of cavendish against blood disease. The research was conducted in the laboratory of Agricultural Biotechnology, Department Plant Pest and Diseas Hasanuddin University. Bananas seedling was planted in the Screen House, Ex-farm of Agricultural Faculty, Hasanuddin University. The research was begun in September 2019 and was ended February 2020. In this research was used the Completely Randomized Design (CRD) method with 5 treatments and 3 replications with each treatment has 3 seedling and total of seedling in the experiment were 30 bananas seedling. Banana seedling was soaked with each 3 microbial antagonists which are PMT, PBT, PAA isolat, and 2 control (positive and nnegative). Observation has 4 steps: (1) The intensity of disease (%), (2) Height plant, (3) Number of leaves, and (4) Weight of plant. Results showed that the best treatment was found in the PMT isolat. It has potencial to be microbial antagonist to support induce of resistance better than PBT and PAA isolat treatments. PMT isolat was suppressed blood disease with percentation until 33,3%, PBT isolat oppressing blood desease until 20,83%. While, PAA isolat has potencial oppressing blood desease until 25%.

Keywords: Resistance induce, Bacillus spp., Ralstonia syzygii subsp. celebensis.

Topic: Integrated Pest and Disease Management