2019, vol. 47, br. 3, str. 157-162
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Uticaj zemljišnih ostataka nikosulfurona na odabrane korove i gajene biljke
Nicosulfuron residues on selected weeds and cultivated plants
Sažetak
Uticaj rezidua herbicida primenjenih u prethodnoj godini od velikog je značaja zbog pojave fitotoksičnosti na naredni gajeni usev. Poznavanjem uticaja rezidua herbicida na različite gajene biljne vrste značajno je i prilikom organizovanja plodoreda. Cilj rada je bio utvrđivanje uticaja rezidua nikosulfurona iz zemljišta na Triticum vulgare L., Beta vulgaris L., Echinochloa crus-galli L. i Chenopodium album L. Ogledi su izvedeni u laboratorijskim uslovima pomoću biotestova. Korišćene koncentracije nikosulfurona su: 0,96 mg/kg, 0,52 mg/kg, 0,34 mg/kg, 0,22 mg/kg i 0,07 mg/kg. Dobijeni rezultati ukazuju na inhibitorno dejstvo primenjenih koncentracija nikosulfurona na klijavost i porast klijanca svih ispitivanih vrsta. Veću osetljivost ispoljava B. vulgaris od T. vulgare, dok je E. crus-galli osetljivije reagovala od C. album. Dobijeni rezultati se moraju imati u vidu prilikom setve T. vulgare i B. vulgaris nakon primene nikosulfurona u usevu kukuruza prethodne godine.
Abstract
Influence of residues of herbicides applied in previous year, on next cultivated crop is of great importance due to the occurrence of phytotoxicity. Understanding the nature of the herbicide residues in soil is important for farmers due to crop rotation organization. Aim of this study was to determine effect of residues of nicosulfuron from soil on Triticum vulgare L., Beta vulgaris L., Echinochloa crus galli L. and Chenopodium album L. Experiment was carried out in laboratory conditions using biotests. Used nicosulfuron concentrations was: 0,96 mg/kg, 0,52 mg/kg, 0,34 mg/kg, 0,22 mg/kg, 0,07 mg/kg. Obtained results indicate inhibitory effect of applied concentrations of nicosulfuron on germination and growth of cluster of all investigated plant species. B. vulgaris exhibits a higher sensitivity of T. vulgare, whereas the E. crus-galli sensitive reacted by C. album. The results must be considered when sowing T. vulgare and B. vulgaris after applying nicosulfuron in maize last year.
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