Knowledge of the horizontal distribution of weed species helps the farmer in the planning of control strategies that can be adopted to avoid interference in yield grain. In coffee cultivation, there are few studies to investigate which families and weed species occur most frequently in different production systems and coffee varieties. Therefore, the objective of the present work was to carry out the phytosociological survey of weeds in coffee cultivated in a traditional system with the variety Catuaí Amarelo. The survey was performed at Sobradinho Farm of IFTM Campus Uberlândia, in Uberlândia city, Minas Gerais. In the month of July, after the coffee harvest, weed species were identified and quantified by the inventory square method (1m x 1m), whose square was randomly placed 10 times between the lines of coffee. The species Synedrellopsis grysebachii showed the highest frequency (0,80), relative frequency (21,62%), density (4,6 plants m-2) and relative density (32,39%) in relation to the other species found in the area. However, Cyperus rotundus was the species with the highest abundance (6,00) and relative abundance (14,09%). In addition, it was possible to observe that the weed species S. grysebachii, Parthenium hysterophorus and Panicum maximum showed the highest values of importance (67,5; 37,9 and 32,8%, respectively). Therefore, these species should be prioritized in the planning of the control strategies to be defined for the Catuaí Amarelo coffee variety grown in the typic dystrophic Red Latosol (Acrusthox) of Sobradinho Farm, in Uberlândia, Minas Gerais state, Brazil.
