Journals / Wheat Studies / 2021 / Cilt: 10 Sayı: 2

Detection of Fungi that Cause Seedling Root Rot in Cotton Planting Areas of Aydın Province Söke District and Determination of the Efficacy of Some Fungicides Against Seedling Root Rot Disease

Aydın İli Söke İlçesi Pamuk Ekim Alanlarında Fide Kök Çürüklüğüne Sebep Olan Fungusların Tespiti ve Bazı Fungisitlerin Fide Kök Çürüklüğü Hastalığına Karşı Etkinliğinin Belirlenmesi

Pages
169–179
Publication Date
2021-12-17
DOI
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AI Summary & Key Takeaways

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

Results obtained against soil-borne pathogens with application of the biological preparations by seed-coating method, it was concluded that it could be used as an alternative to chemical preparations.

📌 3 Key Takeaways

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Objective & Hypothesis:This study was conducted in 2021 in major cotton growing areas in Söke district of Aydın province to determine the prevalence of factors causing seedling disease in cotton and to determine the effectiveness of biological and chemical fungicides against damping-off disease.
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Key Findings & Data:When the obtained fungal isolates were evaluated in terms of isolate density, 52.17% of all isolates were Rhizoctonia solani, 34.78% Fusarium spp., 8.69% Pythium spp. and 4.34% Macrophomina phaseolina.
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Conclusion & Impact:Results obtained against soil-borne pathogens with application of the biological preparations by seed-coating method, it was concluded that it could be used as an alternative to chemical preparations.
🔬Design:Research Article
📍Scope:2021 Verileri
⚙️Variables:Biyofungisit · Çökerten · Fungisit

Abstract

This study was conducted in 2021 in major cotton growing areas in Söke district of Aydın province to determine the prevalence of factors causing seedling disease in cotton and to determine the effectiveness of biological and chemical fungicides against damping-off disease. Infected plant samples were collected by judgmental sampling method from cotton cultivation areas where cotton planting was intensive and fungal isolations were made in the laboratory. According to results of isolation studies, Rhizoctonia solani, Fusarium spp, Pythium spp. ve Macrophomina phaseolina have been isolated in the samples. When the obtained fungal isolates were evaluated in terms of isolate density, 52.17% of all isolates were Rhizoctonia solani, 34.78% Fusarium spp., 8.69% Pythium spp. and 4.34% Macrophomina phaseolina. Then R. solani was the most common fungus with 100% prevalence and was found all sampled fields. It was followed by Fusarium spp., Pythium spp. and M. phaseolina 66.66%, 16.66%, and 8.33% respectively. As a result of the experiment using three biological and two chemical preparations to determine their effectiveness in seedling root rot disease under field conditions, the lowest pre-emergence damping-off was obtained from Rizolex-T with a rate of 20.94%. Rizolex-T was followed by Dynasty CST with a 26.63% damping-off rate. The highest healthy plant emergence rate was Rizolex-T (75.17%), Dynasty CST (68.21%), Subtilex Foliar (64.22%), T-22 Planter Box + ERS (61.56%) and obtained from T-22 Planter Box (60.71%) applications. The least number of healthy plants were observed control plots (48.72%). Results obtained against soil-borne pathogens with application of the biological preparations by seed-coating method, it was concluded that it could be used as an alternative to chemical preparations.

Özet

Bu çalışma 2021 yılında pamuk üretiminin yoğun yapıldığı Aydın ilinin Söke ovasında fide kök çürüklüğü funguslarının yaygınlık oranlarını saptamak ve fide kök çürüklüğü hastalığına karşı bazı biyolojik ve kimyasal preparatların tarla koşullarında etkinliğinin araştırılması amacıyla yürütülmüştür. Yörede pamuk ekiminin yoğun yapıldığı ve daha önceki yıllarda çökerten hastalığının görüldüğü pamuk ekim alanlarından güdümlü örnekleme yöntemiyle hastalıklı bitki örnekleri toplanarak laboratuvarda fungal izolasyonları gerçekleştirilmiştir. Hastalıklı bitki örneklerinden yapılan izolasyonlar sonucu Rhizoctonia solani, Fusarium spp. Pythium spp. ve Macrophomina phaseolina gibi funguslar izole edilmişlerdir. Elde edilen fungal izolatlar izolat yoğunluklukları bakımından değerlendirildiğinde tüm izolatların %52.17’sini Rhizoctonia solani, %34.78’ini Fusarium spp., %8.69’unu Pythium spp. ve %4.34’ünü Macrophomina phaseolinia’nın oluşturduğu tespit edilmiştir. İzole edilen fungusların tarlalar bazında varlıkları dikkate alındığında Rhizoctonia solani’nin örnekleme yapılan tüm tarlalarda görüldüğü ve %100 yaygınlık oranı ile en yaygın fungus olduğu bulunmuştur. Rhizoctonia solani’yi %66.67, %16.67, %8.33 yaygınlık oranlarıyla sırasıyla Fusarium spp., Pythium spp. ve Macrophomina phaseolina’nın takip ettiği görülmüştür. Fide kök çürüklüğü hastalığına tarla koşullarında etkinliklerini saptamak amacıyla üç biyolojik ve iki kimyasal preparat kullanılarak yapılan deneme sonucunda en düşük çıkış öncesi çökerten %20.94’lük oranla Rizolex-T den elde edilmiştir. Rizolex-T’yi %26.63’lük çökerten oranıyla Dynasty CST takip etmiştir. En yüksek sağlıklı bitki çıkış oranı ise sırayla Rizolex-T (%75.17), Dynasty CST (%68.21), Subtilex Foliar (%64.22), T-22 Planter Box + ERS (%61.56) ve T-22 Planter Box (%60.71) uygulamalarından elde edilmiştir. En az sağlıklı bitki oranı ise %48.72’ile ilaçsız kontrol parsellerinde gözlenmiştir. Çalışmamız sonucunda, kaplama yöntemi ile tohuma uyguladığımız biyolojik preparatlardan, toprak kaynaklı patojenlere karşı umut verici sonuçlar elde edilmiş ve kimyasal preparatlara alternatif olarak kullanılabileceği kanaatine varılmıştır.

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Cite This Article

MAMIROV, S., BOYRAZ, N. (2021). Detection of Fungi that Cause Seedling Root Rot in Cotton Planting Areas of Aydın Province Söke District and Determination of the Efficacy of Some Fungicides Against Seedling Root Rot Disease. Wheat Studies, Cilt: 10 Sayı: 2, 169–179. https://ajindex.com/articles/956956

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