Ege ve Akdeniz Bölgesinde Pamuk Çökerten Hastalığının Kontrolünde Tohuma Uygulanan Bazı Fungisitlerin Etkililiklerinin Belirlenmesi

Amaç: Bu araştırmanın amacı 2008-2009 yılları arasında pamuk üretiminin yoğun yapıldığı Akdeniz (Hatay) ve Ege (Söke/Aydın) Bölgelerindeki fide kök çürüklüğü (çökerten) hastalık etmenlerinin yaygınlık oranlarını saptamak ve bu hastalığa karşı denenen 4 farklı kimyasal preparatın hastalık üzerindeki etki oranlarını belirlemektir. Materyal ve Metot: Araştırmanın materyalini Bayer firmasının Hatay ve Söke/Aydın’da saptadığı Rhizoctonia, Alternaria, Fusarium ile bulaşık fidelerin bulunduğu alanlar, Carboxin+thiram (Vitavax 200 FF), Azoxystrobin+Metalaxyl – M+Fludioxonil FS (Dynasty CST 125 FS) 75+37,5+12,5 g/l, Metalaxyl – M+Fludioxonil (Maxim XL 035 FS) aktif maddeli ilaçlar ve Fiber Max çeşitlerine ait pamuk tohumları oluşturmaktadır. Çalışma tesadüf blokları deneme desenine göre dört tekerrürlü olarak gerçekleştirilmiştir. Bulgular: Çalışma bulgularına baktığımızda tarla denemelerinde fide kök çürüklüğü hastalığına karşı etkinlik açısından Hatay’da en iyi sonuç Abbott’a göre % 84.37 ile MAXIM XL FS 035 ile ilaçlanan tohumlardan oluşturulan parsellerde ve Söke/Aydın’da en iyi sonuç Abbott’a göre % 61.02 ile VITAVAX 200 FF 600 ile ilaçlanmış tohumlardan oluşturulan parsellerde olduğu saptanmıştır. Ayrıca en fazla sağlıklı bitki çıkışı yine bu ilaçların kullanıldığı parsellerde gözlemlenmiştir. Sonuç: Bu çalışma ile denemede kullanılan MAXIM XL FS 035 ve VITAVAX 200 FF 600 ile hastalıkla mücadele açısından ümitvar sonuçlar elde edilmiştir.

Anahtar Kelimeler:

Çökerten, Rhizoctonia, Alternaria, Fusarium

Evaluation of Effectiveness of Seed Treatment Fungicides for Controlling Cotton Damping-Off in The Aegean and Mediterranean Regions

Objective: The goals of the research were to determine prevalence of pathogens cause cotton damping-off disease and to evaluate of efficacies of different seed fungicides during 2008-2009 growing seasons in Mediterranean (Hatay) and Aegean (Söke) regions where cotton were cultivated extensively.Material and Methods: Seeds of fiber max cotton variety, fungicides with different active ingredients and the cotton fields naturally contaminated with damping off pathogens were the materials of the studies. Fungicides were applied separately in the seed treatment equipment and the seeds were sowed under farmer conditions in the both locations. The data were statistically evaluated by counting both healthy and dead plants on the 10th and 20th days after emerging. Field trials were carried out in randomized block design with four replications.Results: In this research, seed treatments with (metalaxyl-M 25 g/L+fludioxonil 10 g/L) in Hatay and with (carboxin 205,9 g/L+thiram 205,9 g/L) at the dose of 600 g/100 kg of seeds in Söke/Aydın had the best results to control of the damping-off disease according to their prevalence of the potential pathogenic fungi in the locations.Conclusion: Promising results were obtained from seed treatments with (metalaxyl-M 25 g/L+fludioxonil 10 g/L) and (carboxin 205,9 g/L+thiram 205,9 g/L) at the dose of 600 g/100 kg of seeds on the field trials.

Keywords:

Cotton, damping-off, fungicide, seed treatment,

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