Document Type : Full Paper
Authors
1
M. Sc. Student and Associate Professor, Department of Horticultural Science, Jahrom Branch, Islamic Azad University, Jahrom Branch, Iran
2
Assistant Proffesor, Young Researchers and Elite Club, Yasouj Branch, Islamic Azad University, Yasouj, Iran
3
Associate Professor, Department of Horticultural Science, Jahrom Branch, Islamic Azad University, Jahrom Branch, Iran
Abstract
The aim of this study was to investige the effect of different media cultures and humic Acid (HA) on some vegetative properties and absorption of Phosphorus (P) and Potassium (K) contents in leaf of orange seedling (Citrus sinensis) cv. Valencia grafted on sour orange (C. aurantium) rootstock. A factorial experiment was carried out based on randomized complete block design with three replications. The first factor was HA concenterations of 0, 2.5, 5 and 7.5 gl-1 and second factor was formed by seven different combinations of media culture including 1- soil, 2- zeolite, 3- leaf mold, 4- soil + zeolite, 5- soil + vermicompost 6- Soil+ leaf mold 7- soil + vermicompost + zeolite. Results showed that effect of HA, media culture and their interaction on all of the investigated traits of Valencia orange were significant (P<0.01). The highest and the lowest seedling hight (81 and 50 cm) obtained in plants cultured in soil+vermicompost+ zeolite and 5 gl-1 HA and in soil and without HA, respectively. The highest number of leaves (97), fresh and dry weight of leaf and root, P and K contents obtained in plants cultured in soil+vermicompost+ zeolite mixture and 5 gl-1 HA. Therefore, application of 5 to 7.5 gl-1 HA and use of soil+zeolite+vermicompost mixture is recommended as media culture in order to improvement of quality and quantity of seedling of Valencia orange.
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