Aetiology of the fungal rot of cucumber fruit (cucumis sativus l.) and the efficacy of its control with phytochemicals from crude extracts of two plants.

 

Table Of Contents


Chapter ONE

INTRODUCTION

  • 1.1Introduction
  • 1.2Background of Study
  • 1.3Problem Statement
  • 1.4Objective of Study
  • 1.5Limitation of Study
  • 1.6Scope of Study
  • 1.7Significance of Study
  • 1.8Structure of the Research
  • 1.9Definition of Terms

Chapter TWO

LITERATURE REVIEW

  • 2.1Overview of Fungal Rot of Cucumber Fruit
  • 2.2Causes and Symptoms of Fungal Rot
  • 2.3Importance of Cucumber Fruit in Agriculture
  • 2.4Phytochemicals and Their Role in Disease Control
  • 2.5Previous Studies on Phytochemicals for Disease Control
  • 2.6Plants with Potential Phytochemicals for Disease Control
  • 2.7Efficacy of Phytochemicals in Controlling Fungal Rot
  • 2.8Challenges in Implementing Phytochemical-Based Control
  • 2.9Future Research Directions in Phytochemical Control
  • 2.10Summary of Literature Review

Chapter THREE

RESEARCH METHODOLOGY

  • 3.1Research Design
  • 3.2Sampling Techniques
  • 3.3Data Collection Methods
  • 3.4Data Analysis Procedures
  • 3.5Experimental Setup
  • 3.6Plant Extract Preparation
  • 3.7Disease Inoculation Procedures
  • 3.8Statistical Analysis Plan

Chapter FOUR

DATA PRESENTATION AND ANALYSIS

  • Discussion of Findings
  • 4.1Analysis of Phytochemical Efficacy
  • 4.2Comparison of Plant Extracts in Disease Control
  • 4.3Impact of Phytochemical Concentrations
  • 4.4Interaction Effects of Phytochemicals
  • 4.5Discussion on Disease Resistance Mechanisms
  • 4.6Practical Implications of Research Findings
  • 4.7Recommendations for Agricultural Practices
  • 4.8Future Research Directions

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • and Summary
  • 5.1Summary of Research Findings
  • 5.2Conclusions Drawn from the Study
  • 5.3Contributions to Existing Knowledge
  • 5.4Practical Implications and Recommendations
  • 5.5Limitations of the Study
  • 5.6Suggestions for Future Research

Project Abstract

<p> The aetiology of the fungal rot of cucumber fruit (Cucumis sativus L.) in Enugu State was investigated. Five fungal pathogens were isolated from diseased cucumber fruits. They were identified as Fusarium oxysporum Schlecht, Aspergillus niger Van Tiegh, Rhizopus stolonifer Ehrenb. ex.Fr, Geotrichum candidum Link and Mucor micheli ex Staint – Amans. The pathogenicity tests proved them as the causal agents of the rot. The effects of ethanolic extracts of Chromolaena odorata and Moringa oleifera and benlate solution on the isolates wegre also determined. The ethanolic extracts of the test plants inhibited mycelial growth of the pathogens in vitro as well as in vivo. The inhibitory effects of the extracts increased with increase in concentration. All concentrations of 20 mg/ml to 100 mg/ml reduced the mycelial growth of the pathogens to some significant (P &gt; 0.05) level. Benlate solution also reduced the mycelial growth of the pathogens. Phytochemical analysis of C. odorata revealed the presence of tannins, saponins, phenols, flavonoids, terpenoids, glycosides and alkaloids while M. oleifera contained all the phytochemicals except alkaloids. The presence of these active ingredients in the extracts may have contributed to their inhibitory properties. These findings suggest that plant extracts could serve as potential sources of bio-fungicides. <br></p>

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