Calcium ammonium nitrate is a physiologically neutral fertilizer leaving neither acidic nor basic residue in the soil.Ammonium sulphate is physiologically acidic while sodium nitrate is physiologically basic.Wells(1964)and Balasubramaniam et al.(1967)stated that there was not significant difference in yield due to different sources of nitrogen,as CAN.ammonium et al.(1967)stated that there was not significant difference in yield due to different sources of nitrogen,as CAN.ammonium sulphate and uses,and that CAN could be used as a straight nitrogen fertilizer for top dressing paddy.
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Tamil Nadu Agricultural University
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