Erdinç SAVAŞLI, Oğuz ÖNDER, Cemal ÇEKİÇ, Hasan Müfit KALAYCI, Ramis DAYIOĞLU, Yaşar KARADUMAN, NESİM DURSUN, SAİT GEZGİN

Sulu Şartlarda Ekmeklik Buğdayda Başaklanma Döneminde Yaprak Solusyon Uygulamasının Tane Protein Kapsamı Üzerine Etkisi

Bu çalışma, 2008-2010 yılları arasında Geçit Kuşağı Tarımsal Araştırma Enstitüsü ve Selçuk Üniversitesi iş birliğinde TÜBİTAK tarafından desteklenen araştırma sonuçlarına göre, sulu koşullarda Bezostaya1 ekmeklik buğday çeşidiyle, erken dönem azot uygulaması (ekim + kardeşlenme) 0, 4, 8 ve 12 kg N da-1, başaklanma zamanında ise yaprak solüsyonu (üre formunda) olarak 0, 2, 4 ve 6 kg N da-1 seviyeleri karşılaştırılmıştır. Araştırmada, geleneksel azotlu gübre uygulama zamanında (ekim + kardeşlenme) uygulanan değişik azot seviyeleri başaklanma zamanında bayrak yaprak klorofil kapsamları (SPAD) ve bayrak yaprak toplam azot kapsamları (TN) açısından bir varyasyon yaratılmıştır. Çalışmanın sonuçlarına göre, başaklanma zamanında yapraktan uygulanan azotun tane protein kapsamında en az %1 artış sağlayacağı NSPAD kritik eşik değerleri, Bezostaya1 için 0,95 olarak bulunmuştur. TN için bulunan kritik eşik değerleri ise, Bezostaya1 için %4,31 olmuştur. Her bir kg da-1 N miktarının tane protein kapsamında sağladığı artış, Bezostaya1 için, erken kullanımda %0,18, geç kullanımda %0,30 olmuştur. Ayrıca, protein ve ilgili kalite unsurları üzerine hem erken, hem de geç azot kullanımı etkili olmakla birlikte, başaklanma döneminde yapraktan solüsyon olarak uygulamanın daha etkili olduğu belirlenmiştir. Bu özelliklerden, tane protein kapsamı ile SDS sedimentasyon (r=0,93**), Uzama kabiliyeti (r=0,96**), uzayabilirlik (r=0,96*), hamur gelişme süresi (r=0,87**), tolerans değeri (r=0,56**) ve enerji değeri (r=0,89**) parametreler arasında istatistiki olarak önemli düzeyde korelasyon vermiştir.

The Effects of Foliar Nitrogen Treatments at Heading Stage on Grain Protein Contents of Bread Wheat Cultivars in in Irrigated Condition

This study, conducted by Transitional Zone Agricultural Research Institute in Eskisehir and Selçuk University and was a work packet of TUBİTAK funded project in 2008-2010 growing season. In this study, with using bread wheat cultivars (Bezostaya1) in irrigated condition, it was compared that 0, 4, 8 and 12 kg N da-1 in the early period nitrogen application, both planting and tillering stage and 0, 2, 4 and 6 kg N da-1 solution form using (Urea form) in heading stage. In this study, through with different nitrogen rates in traditional nitrogen application time a variation was created in terms of SPAD and TN at heading stage. According to results of the study, in irrigated conditions, it was found that application of nitrogen from leaves in heading stage can increase the protein content at least 1 % and the critical threshold value of NSPAD was 0.95 for Bezostaya1, on the other hand the critical threshold value of TN critical was % 4.31 for Bezostaya1 in same condition. The using of every 1 kg da-1 of N was increased 0.18 % in early application and 0.30 % in late application for Bezostaja1 in grain protein content. Although both early and late applications was effective for protein content and related quality compounds, the application of leaf solution in heading stage was more dominant. From these properties, it has provided a significant high correlation in the level of protein content with SDS sedimentation(r=0.93**), elongation ability(r=0.96**), extensibility(r=0.96**), duration of dough development(r=0.87**), tolerance value (r=0.56**), and energy value(r=0.89**).

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