Leaf Wetting - Disease Relation in Soybean

Yıl 2020, Cilt: 2 Sayı: 2, 23 - 30, 30.05.2020

Uğur Sevilmis , Deniz Sevilmiş

Öz

Soybean crops are exposed to leaf wetting due to precipitation, dew and irrigation during cultivation in most part of the world, more often in the tropics. It is well known that environmental humidity level has a significant effect on the emergence and development of foliar diseases. When the studies carried out in the World on the effects of leaf wetting on soybeans are examined, it is realised that, Asian soybean rust (Phakopsora pachyrhizi), frogeye leaf spot disease (Cercospora sojina), powdery mildew (Colrospora diffusa) and anthracnose (Colletotrichum gloeosporioides and Colletotrichum apressorium diseases are studied by researchers. Air temperature, wetting duration, sun/cloud period, wetting in day/night and tolerance of varieties were studied in this review and presented together with recommendations.

Anahtar Kelimeler

Leaf wetting, Dew, Rain, Soybean, Diseases

Soyada Yaprak Islanması- Hastalık İlişkisi

Öz

Soya bitkileri, tropik bölgelerde daha sık olmak üzere, dünyanın büyük bir kısmında yetiştirme süresince yağışlar, çiğ ve sulama sebebiyle yaprak ıslanmasına maruz kalmaktadır. Yaprak hastalıklarının ortaya çıkması ve gelişimi üzerinde çevresel nem düzeyinin önemli bir etkisi bulunduğu bilinmektedir. Soyada yaprak ıslanmasının hastalıklara etkisi konusunda dünyada yapılmış çalışmalar incelenince, soya tarımında önemli verim düşüşlerine sebep olan hastalıklardan olan Asya soya pası (Phakopsora pachyrhizi), yaprak lekesi hastalığı (Cercospora sojina), külleme (Microsphaera diffusa) ve antraknoz (Colletotrichum gloeosporioides ve Colletotrichum apressorium) hastalıklarının incelendiği görülmektedir. Hava sıcaklığı, ıslanma süresi, güneşlenme/bulutlanma süresi, ıslanmanın gece/gündüz gerçekleşmesi ve çeşitlerin toleransının işlendiği bu çalışmalar bu derlemede bir araya getirilmiş ve önerilerle birlikte sunulmuştur.

Anahtar Kelimeler

Yaprak ıslanması, çiğ, yağmur, soya, hastalık

Kaynakça

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