Effect of Foliar Spray of Kno3, Humic Acid Cultivars and Their Interactions on Leaf Nutrients of Olive (olea europaea l.) cvs. Khithary and i18 Transplants

  • Azad A. Mayi University of Duhok
  • Gulala M. A. Saeed University of Helebje
Keywords: KNO3, Humic acid, Olive transplant


This study was carried out during the growing season (2012) in Bakrajo Nursery Station/ Sulaimani, Kurdistan Region-Iraq. Uniform and healthy olive (Olea europaea L.) cvs. Khithary and I 18 transplants of (2) years old were used. Filled with river loamy soil to investigate the effect of three levels KNO(0, 100 and 200 mg.L-1), three humic acid concentrations (0,150 and 300 mg.L-1) and their interactions on leaf nutrients of Olive cvs. Khithary and I 18 transplants. The results are summarizing as follows: Khithary significantly dominated over cv. I 18 in total leaf chlorophyll, P, K, Zn. However cv. I 18 significantly increased N and Fe. The interactions between cv. Khithary with KNO3 significantly increased P, K, Fe. While, cv. I 18 significantly increased N and Fe. The interactions between cv. I 18 +300ppm of humic acid significantly increased Fe. While Khithary with humic acid caused the highest values of  N, P, K, Zn. The interactions between KNO3, humic acid and cv. Khithery affected significantly on most of the leaf nutrients characteristics. While, 200 ppm KNO3+0 humic acid with cv. Khithary increased all parameters except leaf Zn. 

Author Biographies

Azad A. Mayi, University of Duhok

1 Department of Horticulture, School of Plant Production, Faculty of Agriculture and Forestry, University of Duhok, Kurdistan Region – Iraq.

Gulala M. A. Saeed, University of Helebje

Department of Horticulture, College of Polytechnic Agriculture , University of Helebje, Kurdistan Region – Iraq.


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How to Cite
Mayi, A., & Saeed, G. (2015). Effect of Foliar Spray of Kno3, Humic Acid Cultivars and Their Interactions on Leaf Nutrients of Olive (olea europaea l.) cvs. Khithary and i18 Transplants. Science Journal of University of Zakho, 3(1), 88-96. Retrieved from https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/103
Science Journal of University of Zakho