Prasangani, W.D.Sinhalage, I.D.Karunathilake, A.A.Madusinghe, M.2021-02-112021-02-1120122235-9877http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/5974/481-Phytotoxicity%20Effect%20of%20Three%20Invasive%20Plant%20SpeciesMimosa%20Pigra%20parthenium%20Hysterophours%2c%20Ulex%20Europaeus.pdf?sequence=1&isAllowed=ySecretions and metabolites of some plant species which show allopathic effect might have the ability to affect as a phytotoxic on another plant.ln that case invasive plant category might become a salient plant type. Invasive plants are the plants that have an ability to thrive and spread aggressively outside its natural range. They adversely affect the habitats and invade those habitats while causing economic and environmental losses. However they have an ability to inhibit the growth of other plant species by means of phytotoxicity. Phytotoxicity is defined as a delay of seed germination, inhibition of plant growth or any adverse effect on plants caused by specific substances (phytotoxins) or growing conditions (Baumgarten et al., 2004). The selected invasive species are recently reported and are observed to have a virulent phytotoxicity effect. In addition, relatively lesser researches are published regarding those three invasive plant species. Therefore, Parthenium hysterophorus, Mimosa pigra, Ulex europaeus have been selected for the experiment.enScience and technologyAgricultureOther