Soil and irrigation water salinity are among the main problems hindering agricultural development, especially in arid and semi-arid regions, which depends on especially surface irrigation as the main means in agriculture. The salinity lead to low growth and production of plants, including fruit, as a result of the temporal, azalotic, or nutrients imbalance. Salinity of the soil or irrigation water greatly reduces the growth, productivity and quality of fruit crops by affecting their physiological, chemical and biological functions as they cause obstruction to the absorption of some elements by the plant and if it increased absorption of salts, it causes ion poisoning of the cell, as well as increased salts cause less absorption of water by the plant due to the high osmosis of soil water. There are many ways to reduce the salt stress in the growth of fruit plants, the most important of which is adding organic fertilizers such as humic acid or spraying with the amino acid proline.
The research included study the effect of foliar spray of three concentrations (0, 30 and 60 mg.l-1) of Iron element as Iron cheleat (Fe-EDDHA) and three concentrations (0, 2, 4 and 6 cm 3) of Acta Agro fertilizer on growth and some vegetative characteristics of pistacia vera L. seedlings which grown in black poly ethylene bags filled with lomy soil, each treatment was applied three times at 25/4, 10/5, 25/5 /2011. A complete randomized block design (R.C.B.D) with three replicates each consisted of 4 seedlings was used to carry out this research. Data collected at the end of September 2011 indicated that, foliar spray of Iron element at 60 mg,l-1 resulted in a significant increase in both parameters, seedlings high and percentage chlorophyll pigment as compared with control treatment. Mean while spray of Iron element at 30 mg.l-1. led to the most significant increase in seedlings high. At the same time, application of Acta Agro fertilizer at 6 cm 3 .l-1 gave the highest increase in total number of leaves per plant, single leaf area and leaf area per seedling. None of treatments had a significant effect on the fresh and dry weight and percentage of dry matter of leaves as compared with control.
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