Journals / Harran Tarım ve Gıda Bilimleri Dergisi / 2026 / Cilt: 29 Sayı: 1

Effects of the foliar cedar tar treatment on the control of the Ascochyta blight caused by Ascochyta rabiei

Sedir Katranının Ascochyta rabie’nin neden olduğu nohut yanıklıklığının kontrolü üzerine etkisi

Emine Burcu Turgay(Tarla Bitkileri Merkez Araştırma Enstitüsü Müdürlüğü)0000-0003-1150-4901
Sertan Çevik(HARRAN ÜNİVERSİTESİ)0000-0003-1259-7863
Eray Şimşek(HARRAN ÜNİVERSİTESİ)0000-0003-4984-4223
Kadir Akan(AHİ EVRAN ÜNİVERSİTESİ)0000-0002-1612-859X
Pages
11–22
Publication Date
2025-03-20
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The antifungal activity results indicated that whereas 10%, 25%, and 50% cedar tar application doses had an inhibitory effect greater than 50% but were harmful to the plant, 1% and 5% cedar tar application doses suppressed mycelial growth by less than 50%.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Ascochyta blight (Ascochyta rabiei) is a significant fungal disease that affects chickpea crops all around the world.
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Key Findings & Data:The antifungal activity results indicated that whereas 10%, 25%, and 50% cedar tar application doses had an inhibitory effect greater than 50% but were harmful to the plant, 1% and 5% cedar tar application doses suppressed mycelial growth by less than 50%.
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Conclusion & Impact:These results suggest that cedar tar can be considered an effective bio-fungicide formulation for future integrated pest management programs.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Nohut yanıklığı · Ascochyta rabiei · Cedrus libani

Abstract

Ascochyta blight (Ascochyta rabiei) is a significant fungal disease that affects chickpea crops all around the world. Synthetic fungicides, which have harmful environmental effects, are commonly used to control the disease. Alternatively, various plant extracts have been explored for disease management. In this study, the antifungal activity of cedar tar, its potential to control the disease, and its disease prevention mechanism in chickpeas were evaluated. The antifungal activity results indicated that whereas 10%, 25%, and 50% cedar tar application doses had an inhibitory effect greater than 50% but were harmful to the plant, 1% and 5% cedar tar application doses suppressed mycelial growth by less than 50%. Therefore, doses of 0.5 %⁻¹, 1 %, and 2 %were selected to determine the disease prevention potential of cedar tar at different application times. Cedar tar treatment applied 72 hours before Ascochyta rabiei inoculation effectively prevented disease development in chickpea plants. This treatment also decreased MDA content, indicating the membrane was protected from pathogen attack. These results suggest that cedar tar can be considered an effective bio-fungicide formulation for future integrated pest management programs.

Özet

Ascochyta yanıklığı (Ascochyta rabiei), dünya çapında nohutu etkileyen önemli bir fungal hastalıktır. Zararlı çevresel etkileri olan sentetik fungisitler hastalığın kontrolünde yaygın olarak kullanılmaktadır. Alternatif olarak hastalık yönetimi için çeşitli bitki ekstraktları araştırılmaktadır. Bu çalışmada sedir katranının antifungal aktivitesi, hastalığı kontrol etme potansiyeli ve nohutta hastalık önleme mekanizması değerlendirilmiştir. Antifungal aktivite sonuçları, sedir katranının %1 ve %5'lik uygulama dozlarının misel gelişimini %50'den daha az engellediğini, %10, %25 ve %50'lik dozların ise %50'den daha büyük bir inhibisyon etkisine sahip olduğunu ancak bitki için toksik olduğu görülmüştür. Bu nedenle farklı uygulama zamanlarında sedir katranının hastalıkları önleme potansiyelini belirlemek için %0,5, %1 ve %2'lik dozlar uygulanmıştır. Ascochyta rabiei aşılamasından 72 saat önce uygulanan sedir katranı uygulaması nohut bitkilerinde hastalık gelişimini etkili bir şekilde önlemiştir. Bu uygulma aynı zamanda MDA içeriğini de azalttığı; bu da zarın patojen saldırısından korunduğunu göstermiştir. Sonuçlar, sedir katranının gelecekteki entegre mücadele yönetimi programları için etkili bir biyo-fungusit olarak değerlendirilebileceğini göstermektedir

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Cite This Article

Turgay, E. B., Çevik, S., Şimşek, E., Akan, K. (2025). Effects of the foliar cedar tar treatment on the control of the Ascochyta blight caused by Ascochyta rabiei. Harran Tarım ve Gıda Bilimleri Dergisi, Cilt: 29 Sayı: 1, 11–22. https://ajindex.com/articles/1348349

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