Variability of the number and weight of 1000 seeds of weeds present in alfalfa natural seeds from different locations in Serbia | Varijabilnost broja i mase 1000 semena korova prisutnog u naturalnom semenu lucerke sa različitih lokaliteta u srbiji
2023
Stanisavljević, Rade | Poštić, Dobrivoj | Štrbanović, Ratibor | Oro, Violeta | Đokić, Dragoslav | Milenković, Jasmina | Tabaković, Marijenka
Alfalfa is the most significant perennial and multi-crop forage legume in Serbia. Seed production has numerous problems, which causes high variability in seed yield. One of the problems in this production is the weed seeds that are in the natural alfalfa seed after harvesting. Minimum purity must be greater than 95 %, up to 2 % of other species are allowed, and up to 0.5 % of weeds, but no quarantine weeds such as dodder (Cuscuta.sp). Weed seeds were detected in natural alfalfa seeds: Sinapis arvensis L., Amaranthus retroflexus L., Rumex obtusifolius, L., Cuscuta campestris Yunk., Rumex acetosella L., Plantago lanceolata L., Plantago major L., Rumex crispus L., Galium aparine L., Convolvus arvensis L. as expected, the variability of the number of weed seeds detected from the seed lots over three years was high: CV% = 14.78 for wild sorghum - S. halepense (L.) Pers. In the 2022, to CV% = 65.47 for ribwort plantain - Plantago lanceolata L. in the 2020. For the weight of 1000 seeds of the examined weeds, the variability was determined from CV% = 5.869 for the ribwort plantain - Plantago lanceolata L. (year 2020), to CV% = 34.41 for yellow dock - Rumex crispus L. (year 2022).
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