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Pakistan Journal of Biological Sciences
  Year: 2013 | Volume: 16 | Issue: 22 | Page No.: 1524-1530
DOI: 10.3923/pjbs.2013.1524.1530
 
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Temporal Patterns and Source Apportionment of Nitrate-Nitrogen Leaching in a Paddy Field at Kelantan, Malaysia

Hazilia Hussain, Mohd Kamil Yusoff, Mohd Firuz Ramli, Puziah Abd Latif, Hafizan Juahir and Mohamed Azwan Mohammed Zawawi

Abstract:
Nitrate-nitrogen leaching from agricultural areas is a major cause for groundwater pollution. Polluted groundwater with high levels of nitrate is hazardous and cause adverse health effects. Human consumption of water with elevated levels of NO3¯N has been linked to the infant disorder methemoglobinemia and also to non-Hodgkin’s disease lymphoma in adults. This research aims to study the temporal patterns and source apportionment of nitrate–nitrogen leaching in a paddy soil at Ladang Merdeka Ismail Mulong in Kelantan, Malaysia. The complex data matrix (128x16) of nitrate-nitrogen parameters was subjected to multivariate analysis mainly Principal Component Analysis (PCA) and Discriminant Analysis (DA). PCA extracted four principal components from this data set which explained 86.4% of the total variance. The most important contributors were soil physical properties confirmed using Alyuda Forecaster software (R2 = 0.98). Discriminant analysis was used to evaluate the temporal variation in soil nitrate-nitrogen on leaching process. Discriminant analysis gave four parameters (hydraulic head, evapotranspiration, rainfall and temperature) contributing more than 98% correct assignments in temporal analysis. DA allowed reduction in dimensionality of the large data set which defines the four operating parameters most efficient and economical to be monitored for temporal variations. This knowledge is important so as to protect the precious groundwater from contamination with nitrate.
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How to cite this article:

Hazilia Hussain, Mohd Kamil Yusoff, Mohd Firuz Ramli, Puziah Abd Latif, Hafizan Juahir and Mohamed Azwan Mohammed Zawawi, 2013. Temporal Patterns and Source Apportionment of Nitrate-Nitrogen Leaching in a Paddy Field at Kelantan, Malaysia. Pakistan Journal of Biological Sciences, 16: 1524-1530.

DOI: 10.3923/pjbs.2013.1524.1530

URL: https://scialert.net/abstract/?doi=pjbs.2013.1524.1530

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