Studies On Some Nutrition Proelems Of Citrus Trees In Sharkyia Governorate

the current study aim atundertaking such assessment dealing with contents of N,p, Fe, Mn, Zn, andCu in orange leaves, and relating them to contents of organic matter (major source of N) and contents of P,K,Fe, Mn, Zn,and Cu extracted by extracting soulutions of Na HCO3 (for P), N H-Acetate (forK) and DTPA (for the others).