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2012, vol. 21, iss. 1, pp. 13-20
Diversity of weed flora in conventional and organic agriculture
aUniversity of Novi Sad, Faculty of Agriculture
bInstitute of Field and Vegetable Crops, Novi Sad

emailljnik@polj.uns.ac.rs
Project:
Organic agriculture: Improvement of production by use of fertilizers, biopreparates and biological measures (MESTD - 31027)
Improvement of Maize and Sorghum Production Under Stress Conditions (MESTD - 31073)

Keywords: diversity; weeds; flora; conventional and organic agriculture
Abstract
Floristic surveys of weeds were performed at the experimental field of the Institute of Field and Vegetable Crops, Department of Organic agriculture and biodiversity in Bački Petrovac. Weed flora was analyzed in the following crops: corn, wheat, buckwheat, soya beans, beans, dill, mint, basil, marigold and flax, which were cultivated by conventional and organic farming principles. The experiment was conducted on chernozem on loess and loess-like sediments, calcareous gleyed medium deep. In the studied crops 32 weed species were recorded, with dominance of species of the class Magnoliopsida (broadleaf weeds) 29 species, while the class Liliopsida (narrow- leaved weeds) is present with only three species. Although infestation was not large, the diverity of weed flora is not negligible. It was largest in the organic corn crops (17 species), than in the conventional production of crop marigold (16 species) and of buckwheat (15 species). In all crops, the most common weeds are: Amaranthus retroflexus L., Convolvulus arvensis L., Datura stramonium L., Solanum nigrum L. and Sorghum halepense L. of which three belong to the category of invasive plant species.
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article language: Serbian
document type: Scientific Paper
published in SCIndeks: 02/09/2013