Effects of Hibiscus Sabdariffa, Punica Granatum and Garcinia Mangostana Extracts on Lasiodiplodia Theobromae, the Causal Agent of Banana Stems End Rot Disease

Main Article Content

Siriwan Samithiarporn
Phornwimnon Runbunlue

Abstract

The study aimed to investigate the efficacy of rosella calyces, pomegranate peel, and mangosteen peel in controlling Lasiodiplodia theobromae (Lt-AYBa), the causal agent of stem end rot. The results indicated that extracts from rosella calyces, pomegranate peel, and mangosteen peel inhibit hyphal growth by 100 percent at minimum concentrations of 4,000, 7,000, and 3,000 ppm, respectively. In evaluations of disease control on Gros Michel bananas, it was found that in both Experiment Set 1 (Pre-Inoculation) and Experiment Set 2 (Post-Inoculation), treatments with rosella calyces, mangosteen peel, and pomegranate peel resulted in a lower average disease incidence area compared to the control group, whereas the chemical treatment showed the highest average disease occurrence area. Furthermore, a statistically significant difference was observed between the non-inoculated control group and the chemical treatment in both experimental conditions. The use of fungicides significantly increased the severity of crown rot disease in bananas, as they caused damage to the fruit tissue. In contrast, all three plant-based extracts effectively controlled the disease, demonstrating greater efficacy in prevention than in eradication.

Article Details

Section
Biological Sciences

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