Phosphorous behavior from different fertilizer resources in some calcareous soils-Kurdistan region-Iraq

Author

Dohuki, Muhammad Sidqi S. M.

Source

مجلة جامعة دهوك

Publisher

University of Duhok

Publication Date

2016-06-30

Country of Publication

Iraq

No. of Pages

12

Main Subjects

Agriculture

English Abstract

A laboratory experimental was conducted at the laboratories of soil sciences and water / College of Agriculture/ University of Duhok, to study the behavior of phosphorous from three different sources of phosphate fertilizers (MAP, DAP, and TSP) in three different soil textures (Clay loam, silty clay loam and loamy) of calcareous soils under three different incubation time (48, 168 and 336) h.

The studied soils were characterized by high soil pH, high level of calcium carbonate and low organic matter content.

Three levels of phosphorous (0, 50 and 100) mg.

P Kg soil -1, from different phosphate fertilizers were added to the studied soils.

The soils were kept at fixed temperature (298°K) and at soil moisture (75) % of the field capacity during studied incubation periods, till reaching equilibrium with the soils.

The results showed that with increasing the amount of applied P levels and incubation time, the added P under go to react with soil components and transform to form more stable phosphate compounds as OCP, β-TCP and HA.

As well as the soil properties of studied soils influenced on the period of phosphorous transformation in soil, as the clay content, CaCO3%, OM%, and soil pH value of the soil increased, the transformation period of added P fertilizers to form more stable phosphate compounds in studied soils decreased.

Generally OCP and β-TCP are governing solubility of P in studied soils.

Data Type

Conference Papers

Record ID

BIM-797941

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