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2015, vol. 52, iss. 1, pp. 14-17
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Weed flora in dill (Anethum graveolens L., Apiaceae, Apiales) grown in conventional and organic production systems
Uporedna analiza korovske flore u konvencionalnoj i organskoj proizvodnji mirođije (Anethum graveolens L., Apiaceae, Apiales)
aUniversity of Novi Sad, Faculty of Agriculture, Serbia
bInstitute of Field and Vegetable Crops, Novi Sad, Serbia
email: [email protected]
Project: Organic agriculture: Improvement of production by use of fertilizers, biopreparates and biological measures (MESTD - 31027)
Abstract
This study was performed to compare the weed flora in dill crops maintained conventionally and according to the principles of organic production. Out of 17 weed species noted for the two growing systems, even four (Amaranthus retroflexus L., Datura stramonium L., Sorghum halepense (L.) Pers., and Veronica persica Poir.) are invasive in Vojvodina region (Serbia). Weed infestation (number of individuals per m2) was significantly higher on the conventional plots (p = 0.0000**). The dominating species in conventional growing system were Convolvulus arvensis, Veronica persica and Chenopodium album (8.00, 6.67 and 5.33 individuals per m2, respectively), while Amaranthus retroflexus dominated on organic plots (8.00 individuals per m2). Regarding life forms of the recorded weed flora, therophytes dominate both in conventional (92.31%) and organic (66.67%) systems. The observed differences in weed flora are due to the specificities of dill conventional and organic production.
Sažetak
Uporednom analizom korovske flore u usevu mirođije gajenom po principima konvencionalne (CP) i organske proizvodnje (OP) konstatovano je ukupno 17 korovskih vrsta, od čega su četiri (Amaranthus retroflexus L., Datura stramonium L., Sorghum halepense (L.) Pers. i Veronica persica Poir.) invazivne za područje Vojvodine. Analizom prosečne zakorovljenosti (broj individua po m2) mirođije u oba sistema gajenja, utvrđena je značajno veća zakorovljenost u usevu gajenom prema CP (p = 0.0000*). U CP mirođije dominiraju Convolvulus arvensis (8.00 ind./m2), Veronica persica (6.67 ind./m2) i Chenopodium album (5.33 ind./m2), dok Amaranthus retroflexus značajno dominira u OP sa 8.00 ind./m2. Biološki spektar pokazuje dominaciju terofita u oba sistema gajenja (CP - 92,31%; OP - 66,67%). Razlike u strukturi korovske flore su vezane za specifičnosti gajenja mirođije u konvencionalnom i organskom sistemu proizvodnje.
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