محتوى و توزيع الفسفور الكلي و الجاهز و علاقته بتطور بعض ترب شمالي العراق

Abstract EN

Ten pedons were selected within three zones in northern of Iraq, represent a high mean annual rainfall (semi humed regions).

The zone are Penjween in Al-Sulaimania Governorate, Mergasure in Arbil Governorate and Sarsank in Duhok Governorate, to study the content and distribution phosphorous as relate of soil development .

The results showed a possibility of phosphorous movement by many ways including mass flow of soil materials and associate with soil components movement especially colloidal which including organic matter, clay minerals and carbonates, Also the results showed that available and total phosphorus increased in developed soils as compared with less develop soil which correlated with pedogenesis processes activity in the developed pedons as compared with less developed pedons.