Ayşegül KORKMAZ, Fatma GÖKMEN YILMAZ, Mustafa HARMANKAYA, Sait GEZGİN

Elma Ağaçlarında Kireç Kaynaklı Demir Klorozunun Azaltılması

Amaç: Bu çalışma, farklı uygulamalarının (Fe’li gübreler, K-Humat ve kükürt) elmanın sürgün uzunluğu, aktif ve toplam Fe, klorofil a, b ve a+b, meyve Fe konsantrasyonu, verim etkinliği ve verimine etkilerini belirlemek amacıyla yürütülmüştür. Materyal ve Yöntem: Çalışmada çok fazla kireçli, alkalin reaksiyonlu bir elma bahçesinde tesadüf blokları deneme desenine göre 4 tekrarlamalı olarak yürütülen çalışmada 13 adet uygulama (Kontrol, FeSO4.7H2O (%19 Fe), Elementel S, FeSO4.7H2O + Elementel S, K-Humat, FeSO4.7H2O + K-Humat, Fe-EDTA (%13 Fe), Fe-DTPA (%6 Fe), Fe-HBED (%6 Fe), Fe-EDDHA (o-o:2.2) (%6 Fe), Fe-EDDHA (o-o:3.5) (%6 Fe), Fe-EDDHA (o-o:4.8) (%6 Fe), ve Fe-EDDHA (o-o:5.25) (%6 Fe)] yapılmıştır. Araştırma Bulguları: Çalışma sonucunda, uygulamaların incelenen parametreler üzerine etkileri istatistiki bakımdan önemli bulunmuş olup en fazla etki FeSO4.7H2O+K-Humat ve Fe-EDDHA (o-o: 5.25) uygulamaları ile belirlenmiştir. Bu uygulamalar arasında fark olmaması nedeniyle bitkinin gerek demir beslenmesinde gerekse verim ve verim etkinliğinin artırılmasında FeSO4.7H2O+K-Humat yerine Fe-EDDHA (o-o: 5.25) veya Fe-kleytli gübreler kullanılabilir. Sonuç: Fe-kleytli gübrelerde orto-orto izomer oranları arttıkça bitkilerce demir alımının arttığı belirlenmiştir. Kireçli topraklarda demir klorozunun azaltılması ve giderilmesinde Fe-kleytli gübrelerden Fe-EDDHA (o-o: 5.25) uygulamasının diğer uygulamalara göre daha etkili olduğu belirlenmiştir.

Anahtar Kelimeler:

Elma, Fe kleytli gübreler, kloroz, verim

Reduction of Lime-Based Iron Chlorosis in Apple Trees

Objective: This study was conductud with the aim of determining the effects of different applications (Fe fertilizers, K-Humate, and sulfur) on shoot length, active and total Fe, chlorophyll a, b, and a+b, fruit Fe concentration, yield efficiency, and yield of apple. Materials and Methods: In the study, which was conducted in 4 replications according to trial pattern of chance blocks in an apple orchard with a lot of lime and alkaline reactions,13 applications (Control, FeSO4.7H2O (19% Fe), Elemental S, FeSO4.7H2O + Elemental S, K-Humate, FeSO4.7H2O + K-Humate, Fe-EDTA (%13 Fe), Fe-DTPA (%6 Fe), Fe-HBED (%6 Fe), Fe-EDDHA (o-o:2.2) (%6 Fe), Fe-EDDHA (o-o:3.5) (%6 Fe), Fe-EDDHA (o-o:4.8) (%6 Fe), and Fe-EDDHA (o-o:5.25) (%6 Fe)]. Results: As a result of the study, the effects of the applications on the investigated parameters were found to be statistically significant, and the maximum effect was determined by FeSO4.7H2O+K-Humate and Fe-EDDHA (o-o: 5.25) applications. Since there is no difference between these applications, Fe-EDDHA (o-o: 5.25) or Fe-chelate fertilizers can be used instead of FeSO4.7H2O+K-Humat. Conclusion: In addition, it has been determined that iron intake by plants increased as ortho-ortho isomer ratios increase in Fe-chelate fertilizers. It has been determined that applying Fe-EDDHA (o-o: 5.25), one of the Fe-chelate fertilizers, is more effective than other applications in reducing and eliminating chlorosis in calcareous soils.

Keywords:

Apple, Fe chelate fertilizers, Chlorosis, Yield,

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