Effect of three botanicals on phyllachora bonariensis causing tar leaf spot disease in Panicum maximum leaf
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Kanife, U. C.
Adekunle, A. A.
Ebabhi, A. M.
Adeogun, O. O.
The Egypt ian Society of Experimental Biology
Biocontrol methods have become a common practice in horticulture and crop husbandry due to the attendant negative impact of fungicides and other chemical agents in the soil, vegetation and environment. Most fungicides accumulate in plant tissues and subsequently trigger toxic effects in animals. The efficacy of Moringa oleifera seed oil (2.5,5,10,15, and 20%) and leave extracts of Vernonia amygdalina and Azadirachta indica (25,50,100,150, and 200 mg/ml ) on tar leaf spot fungus Phyl lachora bonar iensis were studied invi tro on cul ture media. Al l the botanicals showed activi ty and concentrationdependent growth inhibi tion against the tar spot fungus wi th percentage range from 69-100% at var ious concentrations. The tar spot pathogen was more sensi tive to M. olei fera seed oi l than leave extracts of Vernonia amygdal ina and Azadi rachta indica. Also the botanicals reduced the growth of Phyl lachora bonar iensis at lower concentration range of 25-200 mg/ml more than the benlate (standard fungicide) at 1000 mg/100 ml . These botanicals can thus be recommended as potent bio- fungicides since they are environmentally friendly and have potential for control of Phylachora bonariensis.
Biocontrol , Moringa oleifera , Vernonia amygdalina , Pyllachora bonariensis , Azadirachta indica
Kanife, U. C., Adekunle, A. A., Ebabhi, A. M. and Adeogun, O. O. (2016). Effect of three botanicals on phyllachora bonariensis causing tar leaf spot disease in Panicum maximum leaf. Egyptian Journal of Experimental Biology 12(2): 223 – 228