Control of fungal diseases of tomato (Lycopersicum esculentum Mill) fruits using various plant extracts

Abstract

Plant harmful fungi induce symptoms of illnesses that significantly impair the quantity and quality of tomato (Lycopersicum esculentum) yields. The high-water composition of tomatoes renders it highly vulnerable to fungal decay. These fungi, responsible for the decay of tomatoes, generate mycotoxins that pose serious risks to human health. Thus, this research goal is to separate, characterize, and classify the fungi linked with the decline of tomato produce sold across four markets in Mkpat Enin and Ikot Abasi Local Government Areas of Akwa Ibom State, Nigeria. Among the fungal pathogens extracted from afflicted tomato fruits were Fusarium moniliformes, Rhizopus stolonifera, and Aspergillus alternata. Different concentrations of the extracts were individually introduced into Potato Dextrose Agar media. The fungal pathogens were at that point individually introduced into the media and left to incubate for 7 days. Findings revealed that P < 0.05 suppressed the mycelial evolution of the fungal pathogens at a greater concentration tested, with the extent of inhibition varying among different extracts. The results concerning the proportion inhibition of plant extracts on different fungus indicated that, at concentrations ranging from 40% to 80%, ethanolic extracts derived from Cola acuminata and Zingiber officinale significantly (p<0.05) restrained the growth of F. moniliformes, R. stolonifera, and A. alternata. Specifically, the ethanolic leaf extract of C. acuminata demonstrated moderate inhibition on A. alternata at 60%, while the ethanolic extract of Zingiber officinale exhibited low inhibition on F. moniliformes at 40%. At a concentration of 60% in ethanolic extracts, F. moniliformes experienced the greatest inhibition among the plant extracts, whereas A. alternata displayed the least inhibition. Pathogenicity testing indicated that Aspergillus alternata exhibited the largest decay of 25mm in diameter in a healthy tomato fruit, while Rhizopus stolonifera had the smallest decay diameter. Thus, to cover the ledge life of tomato fruits, therefore there’s adequate need to implement proper handling techniques and utilize adequate storage facilities.