The dominant weed species in organically farmed peach: Prunus persica batsch. (Rosaceae A. L. De Jussieu 1789, Rosales)
2014
Džigurski Dejana | Ljevnaić-Mašić Branka | Nikolić Ljiljana
Floristic study of weed vegetation in a peach orchard in Bajmok, certified for organic production, revealed the following predominant species: Erigeron canadensis, Cirsium arvense, Convolvulus arvensis, Chenopodium album, Polygonum lapathifolium, Sorghum halepense, Solanum nigrum, Sinapis arvensis, Setaria viridis, Rubus caesius, Sonchus arvensis, Artemisia vulgaris and Capsella bursa-pastoris. Based on the taxonomic analysis findings, the weed families Asteraceae (4 species), Poaceae (2 species) and Brassicaceae (2 species) comprise the greatest number plant species. Among the analyzed weed species, most of which bloom from June to September, 84.62% are weed-ruderal, and the remaining 15.38% are classified as ruderal. The weed flora life-form spectrum reveals therophyte dominance (53.85%): T4 (38.46%), T1 (7.69%) and T3 (7.69%). Geophytes contribute by 30.77%, or 4 taxa, namely G3 (23.08%) and G1 (7.69%). Finally, hemicryptophytes are present with 15.38%: H3 (7.69%) and H5 (7.69%). Based on the ecological weed flora analyses, the habitat is meso-eutrophic (N - 3.77), unsalinated (S. - 84.62%), and favorably aerated (D - 3.85), and is characterized by moderate humidity (F - 2.54), neutral reaction (R - 3.15), and moderate humus content (H - 3.00), as well as favorable light (L - 3.77) and thermal (T - 3.92) regimen. Phytogeographical analysis of the weed flora in the aforementioned peach orchard indicates the dominance of widely distributed taxa (92.3%)-a characteristic of weed vegetation.
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