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Authors
Affiliations
1 Department of Soil Science, Punjab Agricultural University, Ludhiana (Punjab), IN
2 Department of Agronomy, Punjab Agricultural University, Ludhiana (Punjab), IN
Source
An Asian Journal of Soil Science, Vol 7, No 1 (2012), Pagination: 143-149
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.
