Browsing by Author "Leiva Castillo, Barbara"
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Item Influencia de sustratos producidos por tres fabáceas invasoras sobre el crecimiento inicial de especies olerícolas.(Universidad de Concepción, 2024) Leiva Castillo, Barbara; Aguilera Marín, NarcisoInvasive species pose a threat to ecosystems, and their spread can have significant impacts on biodiversity and food production. This study investigated the effects of substrates produced by three invasive leguminous plants, namely Acacia dealbata, Ulex europaeus, and Teline monspessulana, on the growth and initial development of vegetable species of food interest. Substrates were collected beneath the canopy of each invasive species and used to fill trays in which seeds of lettuce, tomato, radish, and onion were planted. Morphometric variables, such as plant length, number of true leaves, main root length, number of secondary roots, and percentage of dry mass, were evaluated. The results showed that the substrates produced by the leguminous invasive plants had both negative and positive effects on the vegetable species. A reduction in germination potential, as well as decreased plant growth and development compared to the control substrate, were observed in some cases. These effects could have implications for vegetable seedling production and established crops if these substrates are used. The findings reveal that allelochemicals persist in the substrates for a period after being collected beneath the canopy of the donor plants. It would be advisable to subject the substrates to a sunlight exposure process to enhance microbial dynamics and either consume or transform the persistent allelochemicals in the substrates. This would allow their use without the possibility of significant inhibitory risks in the recipient plants.