Weed species in melina (Gmelina arborea Roxb.) plantations in the province of Santo Domingo de los Tsáchilas, Ecuador

Weeds can interact directly or indirectly with crops, offering a wide range of agronomic and ecological functions. Therefore, the objective of this research was to identify the diversity of weed species in plantations of Gmelina arborea Roxb. (Melina), three, four and five years old, established in “La Evelina” farm in La Concordia canton, province of Santo Domingo de los Tsáchilas. The minimum area method was applied and a total of 32 species were found in the 12 sampling units of the study site. Quantitative and qualitative data were recorded such as: scientific names, habits, abundance per species, as well as the coordinates corresponding to each site. For the diversity analysis, parameters such as absolute abundance were calculated, as well as the Jaccard, Shannon and Simpson indices and the minimum area method according to Braun Blanquet. A total of 11,595 individuals were found in 32 species, of which the most abundant was Asystasia gangetica. The Shannon Index and Simpson Index determined a medium diversity in two study sites and low diversity in one site. Finally, the execution of the diversity analysis allowed us to determine that the community of weed species will depend on the level of predominance of the Melina plantation, so that as its age increased, the lower the number of weed species per unit area.

• Auteur principal: Cedeño Zambrano, José (author)
• Autres auteurs: Bautista Zambrano, Priscila (author), Jiménez Romero, Edwin Miguel (author), Pinargote Álava, John (author), Mestanza Uquillas, Camilo (author), Díaz Herraiz, Aurelio (author)
• Format: article
• Langue: spa
• Publié: 2022
• Sujets: ervas daninhas; Melina; diversidade; análise; interações.; arvenses; Melina; diversity; analysis; interactions.; arvenses; Melina; diversidad; análisis; interacciones.
• Accès en ligne: https://revistas.utm.edu.ec/index.php/latecnica/article/view/4045