Fate of Citric Acid Addition on Mineral Elements Availability in Calcareous Soils of Jordan Valley

The variation in physical and chemical properties of calcareous soils Jordan valley has been changed dramatically due to use large amount fertilizers regular manner. Addition organic acid such as citric (CA), can greatly change the pH which affects plant growth production, weakly ionized present soil mostly form matter, play major rule raise availability mineral nutrients that are essential for crops, by lowering density, reducing salinity effects suspended particles may hinder growth.
 reduction enhance Fe, Cu, Zn, ions, converting metallic insoluble state ionic form, thus easily available plants intake, did not increasing concentration, while decreases.
 Data presented show (CA) concentration iron, copper, Zinc manganese decrease PH density.