Natural Antifungal Solutions: The Effect of Khaya Senegalensis on Groundnut Seed Rot

Introduction Groundnut (Arachis hypogaea L.) is a vital crop, widely cultivated for its oil and protein content. However, post-harvest fungal contamination poses a significant challenge, leading to seed rot and reduced yield. A recent study investigates the efficacy of Khaya senegalensis bark and oil in controlling fungal agents affecting stored groundnut seeds in Adamawa State, Nigeria.

Understanding the Fungal Threat Several fungi, including Aspergillus niger, Aspergillus flavus, Penicillium chrysogenum, and Rhizopus stolonifer, contribute to seed deterioration. These fungi can reduce germination rates, affect oil quality, and compromise food safety.

Key Findings of the Study

  • Khaya senegalensis bark and oil demonstrated significant antifungal activity.
  • Ethanol bark extracts showed greater efficacy than aqueous extracts in reducing fungal growth.
  • Oil extracts at 50%-100% concentrations effectively inhibited fungal growth in both in-vitro and in-vivo conditions.
  • Peruvian groundnut varieties exhibited lower fungal susceptibility compared to Valencia varieties.

Natural Alternatives for Seed Protection The American Phytopathological Society highlights the increasing preference for plant-based antifungal solutions due to concerns about chemical residues in food. Botanical extracts like Khaya senegalensis provide a promising, eco-friendly alternative to synthetic fungicides.

Implications for Agricultural Practices This research supports the adoption of plant-based antifungal treatments for post-harvest groundnut storage. Farmers can consider incorporating Khaya senegalensis extracts into storage protocols to mitigate fungal infections naturally.

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