Management of nitrate in groundwater : a simulation study

الملخص EN

Agriculture may cause nitrate and other chemicals to enter into in drinking water is considered a health hazard.

A study was conducted to assess the extent of nitrate pollution of groundwater caused by agriculture and to evaluate the possibility of using the LEACHN model to manage nitrate entry into groundwater of agricultural areas of Al-Batinah, which is the most important agricultural region of Oman.

Groundwater samples were collected and analyzed to assess the problem and to detect possible trends.

Soil sampling and analyses were done to demonstrate the difference in the nitrate concentration in agricultural and non-agricultural soils.

A gestionnaire survey was conducted to gather information on agricultural practices, fertilizer input, and other possible sources of nitrate pollution.

Results from the study show that 23% of groundwater samples have a concentration of of nitrate-N concentration of 10 mg/1 and 34% samples exceed 8 mg/1.

Agricultural soils have higher levels of nitrate compati to non- Strate levels in groundwater س agricultural soils.

also deraratrate to reduce ، Application of the ‘LEACHN’ model demonstrated its suitability for use as a management nitrate leaching to groundwater by controlling fertilizer and water input.