Ayfer ALKAN TORUN, Nurdilek GÜLMEZOĞLU, İnci TOLAY, Ebru DUYMUŞ, Zehra AYTAÇ, Şahin CENKSEVEN, Bülent TORUN

Çinko ve NaCl Uygulamalarının Makarnalık Buğdayın (Triticum durum Desf.) Kuru Madde Verimi ve Besin Elementi Konsantrasyonları Üzerine Etkisi

Dünyanın birçok bölgesinde bitki verimliliğini azaltan tuzluluk, kurak ve yarı kurak bölgelerde yaygın olup böylesi alanlarda çinko (Zn) eksikliği de bitkisel üretimi sınırlandıran önemli bir sorundur. Bu çalışmada, Zn noksanlığına sahip bir toprakta Zn ve tuz uygulamalarının makarnalık buğdayın (Kunduru-1149) yeşil aksam büyümesi ve bazı element konsantrasyonlarına etkilerinin belirlenmesi amaçlanmıştır. Bu amaçla yürütülen çalışmada denemenin başında 3 farklı Zn dozu (0, 5 ve 10 mg Zn kg-1) bitkilerin sapa kalkma döneminde ise 4 farklı tuz dozu (%0, 0.5, 1 ve 1.5) uygulanmıştır. Denemede bitkinin yeşil aksam klorofil içeriği (SPAD değeri), kuru madde verimi, yeşil aksam potasyum (K), sodyum (Na), Zn, mangan (Mn), bakır (Cu), demir (Fe) konsantrasyonları ve K/Na parametreleri incelenmiştir. Elde edilen sonuçlara göre SPAD değerleri, Zn uygulamasının 5 mg kg-1 dozuyla artmış ancak tuz uygulaması ile azalmıştır. Tuz uygulamasının kuru madde veriminde yol açtığı azalma, Zn’nun 10 mg kg-1 uygulamasına göre kontrol ve 5 mg kg-1 uygulamasında daha fazla gerçekleşmiştir. Bitkilerin yeşil aksamındaki K konsantrasyonları bütün tuz uygulamaları altında azalma eğilimi gösterirken, Zn uygulamaları ile artmış, Na konsantrasyonu ise bütün tuz uygulamaları altında artarken Zn uygulamasının aynı tuz uygulamaları altında Na konsantrasyonunu azalttığını, Zn ve Mn konsantrasyonunun arttığı görülmüştür. Sonuçta, tuz uygulamasından kaynaklanan zararın Zn uygulama koşulları altında azaldığı görülmüştür.

Anahtar Kelimeler:

Çinko, tuzluluk, NaCl, makarnalık buğday

Effects of Zinc and NaCl Applications on Dry Matter Yield and Mineral Element Concentrations of Durum Wheat (Triticum durum Desf.)

Salinity, which reduces plant productivity in many regions of the world, is common in arid and semi-arid regions and zinc (Zn) deficiency in such areas is an important problem that limits crop production. In this study, it was aimed to determine the effects of Zn and salt applications on the growth and mineral content of the shoots in Kunduru-1149, which is a durum wheat cultivar using a soil with Zn deficiency. In the study carried out with this aim, 3 Zn doses (0, 5 and 10 mg Zn kg-1) at the beginning of the experiment and Zn and 4 different salt doses (0, 0.5, 1 and 1.5%) at the tillering stage of plants were applied. Chlorophyll content (SPAD value), dry matter yield, green component potassium (K), sodium (Na), Zn, Mn, Cu, Fe concentrations and K/Na parameters of the plant were determined in the experiment. According to the results, SPAD values were increased due to Zn application regardless of salt application, but SPAD values decreased in all Zn applications due to increased salt applications. The yield reduction of the dry matter yielded by salt application was higher in the application of 0 mg kg-1 and 5 mg kg-1 than the 10 mg kg-1 application of Zn. While the K concentrations in the shoots of the plants tend to decrease under all salt applications, they increased with Zn applications and Na concentration increased under all salt applications, while Na concentration decreased with Zn application under the same salt applications. As a result, the damage caused by salt application has been observed to decrease under Zn application conditions.

Keywords:

Zinc, salinity, NaCl, durum wheat,

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