Allelopathic Effects of Mangifera indica L. Leaf Leachate on Germination and Early Growth of Selected Crops

Study’s Excerpt/Novelty This study evaluates the allelopathic effects of Mangifera indica L. leaf leachate on the germination and early growth of various crops, offering detailed insights into concentration-dependent inhibitory effects. By identifying the differential sensitivity of chili peppers, soybeans, beans, okra, and maize to leaf leachate, the research suggests practical agricultural implications, particularly highlighting the potential of Mangifera indica as a natural herbicide. These findings contribute to a deeper understanding of plant-plant interactions and inform crop planting strategies to mitigate allelopathic effects in agricultural systems. Full Abstract This study evaluates the allelopathic effects of Mangifera indica L. leaf leachate on the germination and early growth of soybeans, beans, chili peppers, okra, and maize. Aqueous extracts were prepared from crushed mature leaves and tested at concentrations of 20%, 40%, 80%, and 100% compared to a control (distilled water). Germination percentage of the seeds was recorded at intervals of 24, 48, 76, and 92 hours, while shoot and root length were measured after 10 days. Results showed a concentration-dependent inhibition of germination and growth of shoot and root, with chili pepper being the most affected and maize the least. These findings suggest that Mangifera indica has potential as a natural herbicide and therefore recommended that soya beans, beans, okra, and especially chili pepper should not be planted at the very closest distance from the mango tree stem due to its allelopathic effects.