An Asian Journal of Soil Science

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Long Term Effect of Cropping Systems on the Chemical Fractions of Zinc and Copper in Alluvial Soils of North-West India


Affiliations
1 Department of Soil Science, Punjab Agricultural University, Ludhiana (Punjab), India
2 Department of Agronomy, Punjab Agricultural University, Ludhiana (Punjab), India
     

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The present research study has been conducted with prime objective to investigate the chemical fractions of Zn and Cu under 10 cropping systems in alluvial soils. Surface (0-15 cm) soil samples were collected from an ongoing field experiment (in progress since 2000) with 10 cropping systems at research farm of Department of Agronomy, PAU, Ludhiana. These soil samples were analyzed for total Zn and Cu and their chemical fractions using atomic absorption spectrophotometer (Varion AAS-FS Model). Among chemical fractions, higher levels of Zn (WSEX, SpAd, MnOX and CFeOX) and Cu (WSEX and OM bound) were reported under maize-potato-mungbean and cotton-gobhi sarson cropping systems respectively. Among fractions, SpAd, held on organic sites, oxide bound and amorphous fractions of Zn and Cu contributed towards plant available (water soluble and exchangeable) fractions.

Keywords

Cropping Systems, Micronutrients (Zn and Cu), Chemical Fractions.
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  • Long Term Effect of Cropping Systems on the Chemical Fractions of Zinc and Copper in Alluvial Soils of North-West India

Abstract Views: 154  |  PDF Views: 0

Authors

Gurpreet Singh
Department of Soil Science, Punjab Agricultural University, Ludhiana (Punjab), India
S. S. Dhaliwal
Department of Soil Science, Punjab Agricultural University, Ludhiana (Punjab), India
U. S. Sadana
Department of Soil Science, Punjab Agricultural University, Ludhiana (Punjab), India
Balkaran Singh
Department of Agronomy, Punjab Agricultural University, Ludhiana (Punjab), India

Abstract


The present research study has been conducted with prime objective to investigate the chemical fractions of Zn and Cu under 10 cropping systems in alluvial soils. Surface (0-15 cm) soil samples were collected from an ongoing field experiment (in progress since 2000) with 10 cropping systems at research farm of Department of Agronomy, PAU, Ludhiana. These soil samples were analyzed for total Zn and Cu and their chemical fractions using atomic absorption spectrophotometer (Varion AAS-FS Model). Among chemical fractions, higher levels of Zn (WSEX, SpAd, MnOX and CFeOX) and Cu (WSEX and OM bound) were reported under maize-potato-mungbean and cotton-gobhi sarson cropping systems respectively. Among fractions, SpAd, held on organic sites, oxide bound and amorphous fractions of Zn and Cu contributed towards plant available (water soluble and exchangeable) fractions.

Keywords


Cropping Systems, Micronutrients (Zn and Cu), Chemical Fractions.