Critical Period for Weed control in Sunflower and Effects of Applications on Weed Species and Diversity

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dc.contributor.authorÖZKİL, MİNE
dc.contributor.authortorun, hilmi
dc.contributor.authorEYMİRLİ, SERDAR
dc.contributor.authorÜremiş, İlhan
dc.contributor.authorKARAMAN, YÜCEL
dc.contributor.authorTursun, Nihat
dc.date.accessioned2025-10-24T18:03:30Z
dc.date.available2025-10-24T18:03:30Z
dc.date.issued2022
dc.departmentMalatya Turgut Özal Üniversitesi
dc.description.abstractThis study was carried out under field conditions in Adana, Turkey in 2018 and 2019 to determine the critical period for weed control in sunflower depending on the daily growth temperature (GDD) and weed species. A log-logistic model with four parameters was used to determine the relationship between relative crop yield and both increased weed intervention time and length of weed-free periods. In addition, dominant weeds and weed densities were determined in the experimental area. Data obtained from different periods of weed intervention were compared with data obtained from seasonal weed-free plots. During the sunflower growing season, 37.4% – 41.04% yield loss was determined in sunflower due to weed competition. For 5% acceptable yield loss in the first year, the critical period in weed control was determined as 243-1181 GDD; this is 24-86 days after the crop emergence (DAE) . It was found between 269 and 1409 GDD (16-72 DAE) in the second year. In sunflower, it was determined that the removal of weeds from the plot in the weed-free period started within 2-3 weeks from the emergence and continued for 10-12 weeks. These findings may help sunflower growers to plan and implement cost-effective and appropriate weed control programs.
dc.identifier.doi10.18016/ksutarimdoga.vi.1004638
dc.identifier.endpage1314
dc.identifier.issn2619-9149
dc.identifier.issue6
dc.identifier.startpage1305
dc.identifier.trdizinid1159252
dc.identifier.urihttps://doi.org/10.18016/ksutarimdoga.vi.1004638
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/1159252
dc.identifier.urihttps://hdl.handle.net/20.500.12899/2293
dc.identifier.volume25
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofKahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzTR-Dizin_20251023
dc.subjectBiyoloji
dc.subjectMantar Bilimi
dc.subjectViroloji
dc.subjectZiraat Mühendisliği
dc.subjectBiyoloji Çeşitliliğinin Korunması
dc.subjectKuş Bilimi
dc.subjectZooloji
dc.subjectZiraat
dc.subjectToprak Bilimi
dc.subjectSunflower
dc.subjectCritical period for weed control
dc.subjectCrop–weed competition
dc.subjectWeed species and density
dc.subjectYield loss
dc.titleCritical Period for Weed control in Sunflower and Effects of Applications on Weed Species and Diversity
dc.typeArticle

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