Abstract
The Impact of fungal pathogens on man is enormous, stretching from infecting humans to destroying a third of all food crops annually thereby causing economic losses and impacting global poverty. As a result, fungal disease incidence was assessed under natural field infection and data were collected randomly from 12 months old jatropha seedlings with cankers. Colletotrichum spp. isolated from the diseased sampled were interacted with known fungi and bacteria biocontrol agents. The experiment was carried out on completely randomized design (CRD) in the laboratory. Data were analyzed using ANOVA and statistically different means were separated using LSD (p≤0.05). The dual culture interaction proved that all the BCA used, possessed antagonistic potential, and could serve best for prophylactic protection. Plant diseases may be suppressed by the activities of one or more plant-associated microbes hence keeping them in check below threshold levels. This will help to maintain the quality and abundance of food, thereby mitigating hunger. Negative environmental consequences caused by excessive use and misuse of agrochemicals, requires that healthier and costeffective approaches to disease management should be adopted.
 Keywords: Biodiesel; Agrochemicals; Biocontrol agent; Dual culture; Pathogens
Highlights
The objective of this study is to investigate the incidence of C. gloeosporioides canker on J. curcas and to employ the application of microbial antagonists as biological control agents for the sustainable disease management of this fungal pathogen on Jatropha curcas thereby decreasing the use of agrochemicals in crop cultivation
Data for the biological control assessment: radial growth of the fungal mycelia both for the target organism and the antagonists were measured at 24 hours interval and percentage growth inhibition at dual culture interaction was recorded
Jatropha accessions were susceptible to canker disease caused by C. gloeosporioides under natural infection
Summary
The objective of this study is to investigate the incidence of C. gloeosporioides canker on J. curcas and to employ the application of microbial antagonists as biological control agents for the sustainable disease management of this fungal pathogen on Jatropha curcas thereby decreasing the use of agrochemicals in crop cultivation. Data for the biological control assessment: radial growth of the fungal mycelia both for the target organism (pathogen) and the antagonists were measured at 24 hours interval and percentage growth inhibition at dual culture interaction was recorded.
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