Abstract Summary
Objective
To evaluate how organic cultivation methods, particularly vermicompost application, affect the biomass yield and withanolide concentration in ashwagandha (Withania somnifera).
Context
Ashwagandha is a staple in Ayurvedic medicine, widely used for its adaptogenic effects. With global demand rising, it's vital to explore sustainable farming practices that maintain or improve medicinal potency while protecting environmental health.
Methods Used
Approach
Researchers conducted experimental cultivation using different concentrations of vermicompost and seed pre-treatment techniques to observe impacts on growth and phytochemical yield.
Data Collection
Plant growth metrics such as germination rates, biomass, and flowering time were recorded. Chromatographic analysis quantified key withanolides—Withaferin A, Withanone, and Withanolide A—within the plant tissues.
Researchers' Summary of Findings
Vermicompost significantly improved plant performance. Seeds pre-soaked in vermicompost leachate showed better germination. Plants grown with up to 80% vermicompost demonstrated increased root and leaf biomass, earlier flowering, and greater concentrations of medicinal compounds.
The leaves in particular showed an enhanced presence of withanolides, compounds known for their anticancer activity in lab tests. This suggests not only higher productivity but improved therapeutic quality. Moreover, the shift from synthetic to organic fertilizers like vermicompost aligns with sustainable agricultural practices, improving soil integrity and lowering ecological impact.
DOI
10.1371/journal.pone.0194314
