COŞKUN KÖSE
(İstanbul Üniversitesi, Ormancılık Meslek Yüksek Okulu, İstanbul Türkiye)
Yıl: 2008Cilt: 58Sayı: 2ISSN: 0535-8418 / 1309-6257Sayfa Aralığı: 15 - 28İngilizce

32 0
Evaluation of decay, oxalic acid production and strength loss in wood by the dry rot fungus, Serpula lacrymans
Kuru çürüklük mantarı Serpula lacrymans (Wulfen:Fr.) Schroeter, dünyanın ılıman bölgelerinde önemli ekonomik kayıplara neden olan odun tahripçisi mantarlardan biri olarak kabul edilmektedir. Bu çalışma, dört farklı ağaç odunlarından 2 farklı boyutta hazırlanan örneklerde uygulanan 2 farklı çürüklük testinde S. lacrymans'in bir izolasyonunun oluşturduğu çürüklük kapasitesini incelemektedir. Çürüklük sürecinde S. lacrymans tarafından örneklerde oluşturulan ağırlık kayıplarının yanı sıra, direnç kayıpları ve oluşan oksalik asit miktarı da belirlenmiştir. Modifıye edilmiş toprak yatak (soil bed) denemeleriyle karşılaştırıldığında, toprak blok (soil block) denemelerinde odun örneklerinde daha yüksek ağırlık kayıpları meydana geldiği görülmüşütür. Eğilme direnci deneme örneklerinde meydana gelen direnç kayıpları, ağırlık kayıplarına gore çok daha ayırt edicidir. Çürüklük denemelerinde kullanılan örneklerde hem ağırlık kaybı ile oksalik asit üretimi hem de eğilme direnci kaybı ile oksalik asit üretimi arasında iyi bir ilişki olduğu belirlenmiştir. Bakır esaslı emprenye maddelerine karşı S. lacrymans mantarının emprenyeli odun örneklerinde bakır toleransı kapasitesinin belirlenmesine yönelik çalışmalar sürdürülmektedir.
Fen > Mühendislik > Orman Mühendisliği
DergiAraştırma MakalesiErişime Açık
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