Araştırma Makalesi

The effect of kaolin application on yield and fruit quality in some walnut cultivars

Cilt: 31 Sayı: 3 8 Eylül 2026
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The effect of kaolin application on yield and fruit quality in some walnut cultivars

Öz

This study evaluated the effects of kaolin applications on yield and fruit quality in several walnut genotypes grown in Yayladağı/Hatay, Türkiye. The genotypes included Bilecik, Şebin, Yalova 1, Yalova 3, Yalova 4, Tokat 1, Malatya 1, 77H-1, and Kaplan 86. Trees were treated with 6% and 3% kaolin on June 1 and June 15, respectively. The maximum temperatures recorded during the field experiment were 31.1°C, 36.5°C, 41.8°C, and 38.8°C for June, July, August, and September, respectively. The study found that nut shape, nut size, shell roughness, resistance to cracking, and kernel venation traits less influenced by environmental conditions were not affected by kaolin dosage. Although the weight of kernel increased with kaolin doses, no clear effects on average nut weight were observed. Nut weight varied among genotypes; the control treatment of Tokat 1 had the lowest nut weight at 8.50 g, while the highest nut weight was recorded in the control plots of Kaplan 86 at 24.55 g. The kaolin application doses had varying effects on the oil and protein content of the cultivars. The lowest oil proportion, 50% for Yalova 1, was obtained from control plots, while the highest oil proportion, 64.8%, was found in kaolin-treated Tokat 1 fruits. The highest protein content, 23.88%, was found in kaolin-treated 77H-1 fruits, whereas the lowest protein proportion, 16.59%, was recorded in the control plots of Tokat 1. In addition, walnuts treated with kaolin had fuller kernels, while control plants produced darker and weaker kernels.

Anahtar Kelimeler

Destekleyen Kurum

Hatay Mustafa Kemal University Scientific Research Projects Coordination Office

Proje Numarası

13902

Etik Beyan

This article does not require ethical approval as there are no experiments with human or animal subjects

Kaynakça

  1. Anonymous, (2024). World Production data. Retrieved from http://www.fao.org/faostat/en/#data/QC by December 25, 2024.
  2. Aryapak, S., & Ziarati, P. (2014). Nutritive value of Persian walnut (Juglans regia L.) orchards. American-Eurasian Journal of Agricultural & Environmental Sciences, 14(11), 1228-1235.
  3. Bayazıt, S., & Çalışkan, O. (2018). Change of fruit quality characteristics of chandler walnut cultivar grown in different altitudes of Mediterranean region. Bahçe, 47(2), 63-68.
  4. Bayazıt, S., & Sümbül, A. (2012). Determination of fruit quality and fatty acid composition of Turkish walnut (Juglans regia) cultivar and genotypes grown in subtropical climate of eastern Mediterranean region, International Journal of Agriculture and Biology, 14, 419-424.
  5. Daniel, C., Pfammatter, W., Kehrli, P., & Wyss, E. (2005). Processed kaolin as an alternative insecticide against the European pear sucker, Cacopsylla pyri (L.). JEN 129 (7) doi: 10.1111/j.1439-0418. Berlin.
  6. Ertan, B., Çobanoğlu, F., Şahin, B., Ertan, E., Tutmuş, E., Özen, M., Belge, A., Kocataş, A., & Yazıcı, K. (2009). ‘Sarılop’ incir çeşidinde kaolin partikül film uygulamalarının verim ve bazı kalite parametreleri üzerine etkileri, I. GAP Organik Tarım Kongresi Bildiri Kitabı, Şanlıurfa.
  7. Glenn, D.M., Prado, E., Erez, A., Mcferson, J., & Puterka, G.J. (2002). A reflective, processed- kaolin particle film affects fruit temperature, radiation reflection, and solar injury in apple. The Journal of the American Society for Horticultural Science, 127(2), 188-193.
  8. Glenn, D.M., Puterka, G., Vanderzwet, T., Byers, R.E., & Feldhake, C. (1999). Hydrophobic Particle Films: A New paradigm for suppression of arthropod pests and plant diseases. Journal of Economic Entomology, 92(4), 759-771.

Ayrıntılar

Birincil Dil

İngilizce

Konular

Bahçe Bitkileri Yetiştirme ve Islahı (Diğer)

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

8 Eylül 2026

Gönderilme Tarihi

27 Şubat 2026

Kabul Tarihi

21 Nisan 2026

Yayımlandığı Sayı

Yıl 2026 Cilt: 31 Sayı: 3

Kaynak Göster

APA
Tefek, H., Bayazit, S., & Çalışkan, O. (2026). The effect of kaolin application on yield and fruit quality in some walnut cultivars. Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi, 31(3), 517-525. https://doi.org/10.37908/mkutbd.1898637
AMA
1.Tefek H, Bayazit S, Çalışkan O. The effect of kaolin application on yield and fruit quality in some walnut cultivars. MKU. Tar. Bil. Derg. 2026;31(3):517-525. doi:10.37908/mkutbd.1898637
Chicago
Tefek, Hilal, Safder Bayazit, ve Oğuzhan Çalışkan. 2026. “The effect of kaolin application on yield and fruit quality in some walnut cultivars”. Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi 31 (3): 517-25. https://doi.org/10.37908/mkutbd.1898637.
EndNote
Tefek H, Bayazit S, Çalışkan O (01 Eylül 2026) The effect of kaolin application on yield and fruit quality in some walnut cultivars. Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi 31 3 517–525.
IEEE
[1]H. Tefek, S. Bayazit, ve O. Çalışkan, “The effect of kaolin application on yield and fruit quality in some walnut cultivars”, MKU. Tar. Bil. Derg., c. 31, sy 3, ss. 517–525, Eyl. 2026, doi: 10.37908/mkutbd.1898637.
ISNAD
Tefek, Hilal - Bayazit, Safder - Çalışkan, Oğuzhan. “The effect of kaolin application on yield and fruit quality in some walnut cultivars”. Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi 31/3 (01 Eylül 2026): 517-525. https://doi.org/10.37908/mkutbd.1898637.
JAMA
1.Tefek H, Bayazit S, Çalışkan O. The effect of kaolin application on yield and fruit quality in some walnut cultivars. MKU. Tar. Bil. Derg. 2026;31:517–525.
MLA
Tefek, Hilal, vd. “The effect of kaolin application on yield and fruit quality in some walnut cultivars”. Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi, c. 31, sy 3, Eylül 2026, ss. 517-25, doi:10.37908/mkutbd.1898637.
Vancouver
1.Hilal Tefek, Safder Bayazit, Oğuzhan Çalışkan. The effect of kaolin application on yield and fruit quality in some walnut cultivars. MKU. Tar. Bil. Derg. 01 Eylül 2026;31(3):517-25. doi:10.37908/mkutbd.1898637

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