Efficacy of Seed Treatments With Some Fungicides Against Bean Root Rot Caused By Rhizoctonia solani

Yıl 2019, Cilt: 5 Sayı: 1, 96 - 102, 30.06.2019

Gülsüm Palacıoğlu Beyza Cankara Harun Bayraktar Göksel Özer

https://doi.org/10.24180/ijaws.533240

Öz

This study evaluated the
effect of some fungicides on emergence, disease severity and seedling growth of
bean plants against root rot disease of bean caused by Rhizoctonia solani.  Among
the seed treatment fungicides, sedaxane was the most effective fungicide, which
increased the emergence of bean seeds at a rate of 93.33% and yielded a 44%
decrease in disease severity compared with those of pathogen-inoculated
control. Similarly, fungicides with fludioxonil and azoxystrobin active
ingredients yielded 86.67% and 73.33% increase in emergence, and a 32% and
30.67% decrease in disease severity, respectively. The fungicides with
trifloxystrobin and difenocanozole active ingredients were moderately effective
and prevented 18.67% and 20 % of disease severity, respectively. However, the
fungicides with thiram, acibenzolar-s-methyl and propineb active ingredients
have no effect on emergence and disease severity. The fungicides with sedaxane,
fludioxonil and azoxystrobin active ingredients have similar effect on seedling
growth compared with the growth the control seedlings. The result showed that
fungicides alone or combination applications will be beneficial to reduce yield
losses, caused by Rhizoctonia root rot on bean.

Anahtar Kelimeler

Bean, fungicide, disease control, Rhizoctonia solani, seed treatment

Fasulyede Rhizoctonia solani’nin Neden Olduğu Kök Çürüklüğüne Karşı Tohuma Bazı Fungisit Uygulamalarının Etkinliği

Öz

Fasulyede Rhizoctonia solani’nin neden olduğu kök çürüklüğüne karşı bazı
fungisitlerin çıkış oranı, hastalık şiddeti ve bitki gelişimi üzerindeki etkisi
bu çalışma kapsamında değerlendirilmiştir. Tohum ilacı olarak kullanılan
fungisitler arasında sedaxane en etkili fungisit olup, patojenle inokuleli
kontrol uygulamalarına göre çıkış oranını %93.33 seviyesinde artırdığı,  hastalık şiddetini ise %44 oranında
engellediği tespit edilmiştir. Benzer şekilde fludioxonil ve azoxystrobin
etkili maddeli fungisit uygulamalarındaki çıkış oranının sırasıyla %86.67 ve
%73.33 olduğu, hastalık şiddetinin ise %32.00 ve %30.67 oranlarında azaldığı
belirlenmiştir. Trifloxystrobin ve difenocanozole etkili maddeli fungisitler
ise orta derecede etkili olup, hastalık şiddetini sırasıyla %18.67 ve %20.00
oranlarında engellemişlerdir. Bununla birlikte thiram, acibenzolar-s-methyl ve
propineb etkili maddeli fungisitlerin çıkış oranı ve hastalık şiddeti üzerinde
etkili olmadıkları tespit edilmiştir. Bitki gelişimi açısından da sedaxane,
fludioxonil ve azoxystrobin etkili maddeli fungisitlerin kontrole yakın bir
gelişim sağladıkları gözlemlenmiştir. Bu kapsamda bu fungisitlerin tek başına
yada kombinasyon uygulamalarının fasulyede bu hastalığın neden olduğu
kayıpların azaltılması açısından faydalı olacağı düşünülmektedir.

Anahtar Kelimeler

Fasulye, fungisit, hastalık kontrolü, Rhizoctonia solani, tohum ilaçlaması

Kaynakça

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