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Invasion of Prosopis juliflora augmented positive and negative impact on rural communities of Tamil Nadu. Even though it has been introduced for soil reclamation and fire wood in Tamil Nadu, its spread through the deep root system, high water use efficiency, Allelopathy effects have scored higher significant towards the eradication in Tamil Nadu. In the present study was to identify the spread and impacts of Prosopis juliflora on rural communities and their mythological aspects towards the Prosopis juliflora. The investigation shows that, it has dominated the drier parts of Tamil Nadu and extending towards the irrigated area because of poor management and seven myths viz., Invasive species through abundant seed production, Depletes water table through Root Development, Sterility problems due to consumption of pods, Negative biotic associations, Reduce soil fertility, Allelopathy and Restricted utilization except fuelwood were identified which are prominent among the rural livelihoods and discussed briefly.

Key words: Prosopis juliflora, Invasive species, Ground water depletion, Allelopathy, Deep root.