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Volume 72 - June 1969

Contents

Page 4 of 4

Front matter

  • AGS volume 72 issue 3 Cover and Front matter

  • Published online by Cambridge University Press:
    27 March 2009, pp. f1-f8
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Short Note

  • Accumulation of nitrate in fresh soils after gamma irradiation

  • P. A. Cawse, T. White
  • Published online by Cambridge University Press:
    27 March 2009, pp. 331-333

  • Increases in nitrate have been found in eight out of ten soils irradiated over the range 0·25–2·5 Mrad, with maximum accumulation between 0·25–0·75 Mrad. Oxidation of ammonium added to normal soils was poor at low pH, and showed a highly significant correlation with nitrate produced after 0·25 Mrad. It is suggested that radiation-released ammonium is less limiting to nitrate formation than the original population or activity of nitrifying organisms, which are favoured by alkaline conditions.

Back matter

  • AGS volume 72 issue 3 Cover, Back matter and Corrigendum

  • Published online by Cambridge University Press:
    27 March 2009, pp. b1-b8
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Front matter

  • AGS volume 72 issue 2 Cover, Front matter and Corrigendum

  • Published online by Cambridge University Press:
    27 March 2009, pp. f1-f7
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Back matter

  • AGS volume 72 issue 2 Cover and Back matter

  • Published online by Cambridge University Press:
    27 March 2009, p. b1
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Page 4 of 4