Weed infestation in durum wheat (Triticum durum L.) under different fertilization methods

The aim of this study was to determine the influence of different organic fertilizers on weed infestation in durum wheat over a two-year period. The experiment was conducted at the "Radmilovac" experimental field, managed by the University of Belgrade, Faculty of Agriculture. The durum wheat cultivar "Durumko " was selected for this study . The experiment was established as two factorial, with three repetitions. Factor A consisted of two growing seasons (2023/24 and 2024/25), while factor B included six fertilization treatments involving different organic fertilizers (ZEO PULLUS, ZEO MAG, ZEO FOS and their combination with microbiological fertilizer Slavol) and control treatment. Annual weeds were predominantly represented, with Ambrosia artemisiifolia L. and Consolida regalis S. F. Gray identified as the most abundant species. The highest total number of weeds was recorded in the treatment where organic fertilizer ZEO MAG and microbiological fertilizer Slavol were applied simultaneously. The highest fresh weed biomass was recorded in the treatment with the organic fertilizer ZEO FOS (152 g m-2), and the highest air-dried biomass was also observed in this treatment. Proper fertilization management, harmonized with agroecological conditions, represents an important agronomic measure in the control of weed infestation in durum wheat.