Abstract
The use of botanicals to control phytopathogens of crops is an alternative to the use of synthetic fungicides. The objective of this study was to evaluate the in vitro growth inhibitory effect of P...
Highlights
Crop production is hindered by an array of phytopathogens, of which fungal pathogens are some of the most prominent (Addisu, Egigu, & Bekele, 2016)
The extracts, at all levels of concentration, significantly inhibited mycelial growth of B. fabae when compared with control that had no growth inhibitory effect, and growth inhibitory effect appeared to increase with increasing extract concentration, though no significant differences were evident between 10% and 20% extract concentrations (Figure 1 with mean separation indicated by capital letters over error bars)
The in vitro bioassay results showed that all solvents extracts of P. dodecandra had negative effects on the growth of B. fabae, and growth inhibitory effect increased with extract concentration
Summary
Crop production is hindered by an array of phytopathogens, of which fungal pathogens are some of the most prominent (Addisu, Egigu, & Bekele, 2016). The major fungal diseases that threaten faba bean production are chocolate spot (caused by Botrytis fabae Sard.), leaf rust (caused by Uromyces viciae-fabae), ascochyta blight (caused by Ascochyta fabae) and black root rot (caused by Fusarium solani). Chocolate spot is most commonly controlled by the application of synthetic fungicides (Addisu et al, 2016). Though synthetic fungicides have been proven for their effectiveness in controlling fungal plant pathogens, it has been detected recently that Botrytis cinerea and B. fabae are exhibiting resistance to chemical fungicides (Hassan, Abd El-Rahman, El-Abbasi, & Mikhail, 2006; Parry, 1990)
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