Original scientific paper
https://doi.org/10.5513/JCEA01/26.2.4539
Distribution and virulence of Orobanche cumana Wallr. in sunflower weed communities of northeastern Croatia
Slavica ANTUNOVIĆ
orcid.org/0000-0001-8857-5308
; University of Slavonski Brod, Biotechnical Department, Trg I. Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia
*
Sanda RAŠIĆ
orcid.org/0000-0002-5965-9788
; J. J. Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences, Department of Plant Medicine, V. Preloga 1, 31000 Osijek, Croatia
Pavo LUCIĆ
; J. J. Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences, Department of Plant Medicine, V. Preloga 1, 31000 Osijek, Croatia
Domagoj ZIMMER
; J. J. Strossmayer University of Osijek, Faculty of Agrobiotechnical sciences, Department of agricultural techniques and renewable resources, V. Preloga 1, 31000 Osijek, Croatia
Marin LUKAČEVIĆ
orcid.org/0000-0003-2250-7729
; PhD student, J. J. Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences, Department of Plant Medicine, V. Preloga 1, 31000 Osijek, Croatia
Matej KUNČEVIĆ
; Former graduate student, J. J. Strossmayer University of Osijek, Faculty of Agrobiotechnical sciences, V. Preloga 1, 31000 Osijek, Croatia
Edita ŠTEFANIĆ
; University of Nebraska Lincoln, Department of Agronomy and Horticulture, NE 68583-0708, USA
* Corresponding author.
Abstract
Orobanche cumana Wallr. is a parasitic angiosperm distributed in many sunflower-producing countries worldwide, where it can cause a severe yield loss. Field surveys in sunflower fields during July-August in 2017, 2019, and 2021 were conducted in the northeastern part of Croatia to investigate broomrape attack rate, weed community where broomrape was present, and weed management strategies used by the farmers. Although, it was observed the difference between the morphometric characteristics of broomrape in the investigated area (Baranja, Syrmia, and Slavonia), the most concerning fact is a trend of increasing attack rate from 2017 to 2021, recorded in the whole region. Weed communities that coexist with broomrape consist of a total of 31 species, where late spring broadleaf weeds predominate (58% of the total weed infestation), followed by the late spring grass weeds (16%). The most abundant was Ambrosia artemisiifolia followed by Chenopodium album, Xanthium strumarium, Setaria viridis, Cynodon dactylon, Sorghum halepense, Convolvulus arvensis and Orobanche cumana. No phytosociological affinities were observed between broomrape and weed communities in sunflowers. The full CCA model explained 82.81%, while the first two axes explained 55.92% of the total variation in community composition. The most important predictors were herbicide and sunflower hybrid choice, while preceding crops, sunflower sowing rate and broomrape attack rate accounted for significantly less variance.
Keywords
root parasitic weed; attacking rate; morphometric characteristics; oilseed crop
Hrčak ID:
332715
URI
Publication date:
29.6.2025.
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