İBRAHİM ERDAL, ÖNDER TÜRKMEN, MEHTAP YILDIZ

Tuz stresi altında yetiştirelen hıyar (Cucmis sativus L.) fidelerinin gelişimi ve kimi besin maddeleri içeriğindeki değişimler üzerine potasyumlu gübrelemenin etkisi

Bu çalışmada tuz baskısı koşullarında hıyar fidelerinin gelişimini ve bazı besin maddelerinin değişik dozlarda K uygulamasına bağlı olarak değişimlerini incelemek amaçlanmıştır. Bu nedenle ortama 4 farklı düzeyde tuz (0,10, 20 ve 30 mmol NaCl) ve 4 farklı düzeyde potasyum (0,75,150, 300 mg K/kg) uygulanmışta. Araştırma sonunda tuz ve K uygulamalarının bitki kuru ağırlığı üzerine olumsuz etkisi görülmüştür. Yüksek tuzlulukta bitkinin Na, Ca, Mn, Cu ve Fe içerikleri artmış, buna karşılık K ve P içerikleri azalmıştır. Potasyum uygulamaları ile bitkinin K, Zn, Mn, Cu ve Fe içerikleri artmış, buna karşılık Na, Ca, Mg ve P içerikleri azalmıştır.

Anahtar Kelimeler:

hıyar, tuzluluk, bitki gelişimi, besin maddesi içeriği, Cucumis sativus, potasyumlu gübreler

Effect of potassium fertilization on cucumber (Cucumis sativus L.) seedling growth and changes of some nutrient contents under salt stress

In this study it was aimed to investigate the seedling growth and the nutrient chances in cucumber with different K doses under salt stress. For this purpose, 4 levels of salt (0,10,20 and 30 mmol NaCl) and 4 levels of potassium (0,75,150 and 300 mg K $kg^{-1}$ ) were applied to the growing media. At the end of the study, it was seen that increasing amount of salt and K applications negatively affected seedling dry weight. High salinity caused an increasement in Na, Ca, Mn, Cu and Fe contents of plant but plant K and P contents decreased with salinity. Depending on increasing K applications plant K, Zn, Mn, Cu and Fe concentrations increased, however Na, Ca, Mg and P concentrations decreased.

Keywords:

cucumbers, salinity, plant development, nutrient content, Cucumis sativus, potassium fertilizers,

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