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Pomegranate extract a biopesticide for speck

A study funded by the Italian Ministry of Agriculture, Food and Forestry has shown that pomegranate peel extracts can offer efficient control of tomato bacterial speck ( Pseudomonas syringae pv tomato). Ethanol extracts of pomegranate fruit peels inhibited infection by a highly virulent strain of the pathogen for at least 15 days, and could offer a realistic alternative to copper-based sprays commonly used to control the disease. The researchers identified the active components in the extracts as ellagic and gallic acids. Further investigations are being carried out to understand more thoroughly their role in pomegranate peel extract and antibacterial efficacy against different bacterial plant pathogens, as well as their large-scale use in disease management. The activity of this plant extract might provide new opportunities to improve control of different bacterial tomato diseases, including bacterial speck, spot, canker and pith necrosis, the researchers note. Details of the study have been published in the journal, Crop Protection.

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