FITOSSOCIOLOGIA DE PLANTAS DANINHAS EM ÁREA DE CULTIVO DE ABACAXI NO MUNICÍPIO DE FLORESTA DO ARAGUAIA, SUDESTE DO PARÁ

• DOI: https://doi.org/10.22533/at.ed.0771325120214

• Palavras-chave: abacaxicultura, flora daninha, análise fitossociológica, espécies infestantes, manejo sustentável.

• Keywords: pineapple cultivation, weed flora, phytosociological analysis, invasive species, sustainable management.

• Abstract: Pineapple cultivation (Ananas comosus) is an important economic activity in the municipality of Floresta do Araguaia, located in the southeastern region of Pará, playing a significant role in generating employment and income for local agriculture. However, the presence of weeds compromises the development of cultivated plants, leading to reduced productivity. Understanding the floristic composition and conducting a phytosociological analysis of the species present are essential to support more efficient and sustainable management strategies. This study aimed to carry out a phytosociological survey of weeds in a pineapple field in this locality. For this purpose, 30 plots of 1 m² were randomly established within the cultivated area. In each plot, all individuals were identified and counted. The phytosociological parameters of density, frequency, abundance, and importance value (IV) were calculated. A total of 1,869 individuals were recorded, distributed across 19 families and 43 species. The most abundant families were Asteraceae, Euphorbiaceae, and Commelinaceae. Among the species, Euphorbia hirta, Emilia sonchifolia, Murdannia nudiflora, Phyllanthus sp., and Marsypianthes chamaedrys stood out for presenting the highest densities, relative frequencies, and importance values. These species exhibit high competitive potential, requiring special attention in management practices. The results provide valuable insights for the development of more effective control strategies and enhance the understanding of the weed flora associated with pineapple cultivation in the state of Pará.