DOPA’NIN YABANCI OTLAR ÜZERİNDE ALLELOPATİK ETKİSİ

Dopa kadife bakla gibi bazı bitkilerin tabi bir ürünüdür. Bu çalışmada yabancı otlar; Yabanihardal (Sinapis arvensis), köy göçüren (Cirsium arvense), gelincik (Papaver rhoeas) veballıbaba (Lamium amplexicaule) türleri ile buğday ve arpa üzerine dopanın herbisit etkisiaraştırılmıştır ve karşılaştırılmıştır. Dopanın 1500 ve 3000 mg/l konsantrasyonları yabancıotların gelişimini istatistiksel olarak önemnli derecede azalma fakat buğday ve arpada çokolumsuz bir etkisinin bulunmadığı gösterilmiştir. Dopadan en çok etkilenen türün Papaverrhoeas olduğu bulunmuştur. Kullanılan yabancı otların geneline bakıldığında kökuzamasındaki azalma gövde uzamasından daha fazla olmuştur.

Anahtar Kelimeler:

Allelokimyasal, dopa, herbisit etkisi, fide büyümesi, yabancı ot kontrolü

ALLELOPATHIC EFFECTS OF DOPA AGAINST FOUR WEED SPECIES

Dopa is a natural product of some plants such as velvetbean. Its herbicidal effects on weedspecies; wild mustard (Sinapis arvensis), creeping thistle (Cirsium arvense), field poppy(Papaver rhoeas) and henbit (Lamium amplexicaule) were investigated using wheat (Triticumvulgare) and barley (Hordeum vulgare) species as control plants. Dopa showed suppressiveherbicidal effect at 1500 and 3000 mg/l concentrations on the weeds without significantlyaffecting wheat and barley growth. The most affected weed species was found field poppy.Comparing growth of all weeds, inhibition in the growth of roots was more prominentcompared to the growth of shoots.

Keywords:

Allelochemical, dopa, herbicidal effect, seedling growth, weed control,

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