Effect of foliar application of different fertilizers on growth and leaf nutrient elements content of sour orange seedlings

الملخص EN

-Influence of different foliar fertilizers on growth characteristics and leaf nutrient elements content of sour orange seedlings grown under nursery conditions was investigated.

Three foliar fertilizers, namely, Foliar-X, Compound Cryst and Bayfolan were used in content was found in seedlings sprayed with Bayfolan than the other treatments.

Leaf-Cu content showed an opposite trend than that of leaf-N content.

this study.

The potted sour orange seedlings were sprayed 12 times during the study period of 6 months, using the recommended concentrations.

Growth parameters were evaluated in terms of plant height, stem diameter, number of leaves, leaf area and fresh and dry weights of leaves, stems and roots.

At the termination of the experiment, some of the leaf nutrient elements contents were determined .

The results demonstrated that stem diameter, leaf area, fresh and dry weights of roots and dry weight of leaves were not significant between Foliar-X and Compound Cryst fertilizers and, also, between Bayfolan fertilizer and control; however, the former two treatments resulted in significantly higher values of these parameters than the latter two treatments.

Significantly higher values of plant height, number of leaves, fresh weights of leaves and stems and dry weights of leaves were associated with Foliar-X than the other treatments.

Generally, the highest values of all growth parameters were recorded in seedlings sprayed with Foliar-X, followed with Compound Cryst, Bayfolan and then the control.

Significantly higher leaf-N, K, Ca, Mg and Zn contents were detected in seedlings sprayed with various foliar fertilizers than the control.

Spraying of seedlings with either Foliar-X or Compound Cryst fertilizer resulted in significantly higher leaf- N, K, Mg, and Zn than spraying them with Bayfolan fertilizer.

Significantly higher leaf-P