Farklı Potasyum Dozlarında Arbusküler Mikorhizal Fungus (AMF) Uygulamalarının Patates (Solanum tuberosum L.)'in Yumru Verimi ve Yumru İriliği Dağılımı Üzerine Etkisi

Çalışma, farklı potasyum dozlarında Arbusküler Mikorhizal Fungus (AMF) uygulamalarının patatesin yumru verimi ve yumru iriliği dağılımına etkisini belirlemek amacıyla 2007 ve 2008 yıllarında Bitlis-Ahlat ekolojisinde tarla koşullarında yürütülmüş, tesadüf bloklarında faktöriyel deneme desenine göre üç tekerrürlü olarak kurulmuştur. Denemede faktör olarak 4 potasyumlu gübre dozu (0, 10, 20 ve 30 kg K SO /da) ile AMF (+) ve AMF (-) uygulamaları ele alınmıştır. Yapılan çalışmada AM fungusunun yalnız ve potasyumlu gübre ile birlikte uygulanması patatesin yumru verimlerini arttırmıştır. Bununla birlikte, en yüksek toplam yumru verimi her iki yılda da GI+K uygulamasından, birinci yıl 3476,1 kg/da, ikinci yıl 4354.4 kg/da olarak elde edilmiştir. AM fungusunun kullanımı küçük yumru oranını azaltırken, orta ve büyük yumru oranını arttırmıştır. AMF Glomus intraradices uygulamasının patateste potasyum gübresi kullanımını azaltmak için büyük bir potansiyele sahip olduğu sonucuna varılmıştır.

Anahtar Kelimeler:

Arbusküler Mikorhizal Fungus, Patates, Potasyum, Verim

Effect of Arbuscular Mycorrhizal Fungus (AMF) Glomus intraradices with different potassium fertilizer levels on the tuber yield and size distribution of potato (Solanum tuberosum L.)

This field study was conducted to investigate the effect of Arbuscular Mycorrhizal Fungus (AMF) Glomus intraradices on the growth, tuber size distribution and yield of potato (Solanum tuberosum L.) under different doses potassium fertilizer in the Bitlis-Ahlat district of Eastern Anatolia region of Turkey in 2007 and 2008. Experiment was set up as factorial completely randomized block design with three replicates, four different potassium levels (0, 10, 20 and 30 kg KSO /da) and mycorrhizal fungi with AMF (+) and AMF (-) applications were factors. The AMF inoculation, alone or in combination with potassium application, increased the total tuber yield of potato in both years. Besides, the highest tuber yields were obtained from GI+K in 2007 and 2008 by 3476,1 and 4354.4 kg/da, respectively. It was also found that AMF inoculation decreased the proportion of small tubers but increased proportion of mid and larg size tubers. The results of this study indicated that the AMF inoculation has a great potential to decrease potassium fertilizer levels in potato.

Keywords:

Arbuscular Mycorrhizal Fungus, Potatoes, Potassium, Yield,

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