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Volume 11 - January 1975

Contents

Page 3 of 4

Reviews

Research Article

  • Responses of Soybean to Symbiosis and Nitrogen Fertilization Under Humid Sub-Tropical Conditions

  • U. R. Pal, M. C. Saxena
  • Published online by Cambridge University Press:
    03 October 2008, pp. 221-226

  • Responses of nodulating and non-nodulating isolines of Clark and Harosoy to applications of N were studied, to evaluate the suitability of symbiosis versus N fertilization for soybean. Nodulating lines did not respond to N when they were either effectively inoculated or raised on a field which had been under inoculated soybean in the past. On a field brought under soybean for the first time, uninoculated Clark and Harosoy needed 300 and 235 kg. N/ha. respectively to give maximum yields. Symbiosis proved better than N fertilization for the N nutrition of soybean.

Reviews

Research Article

  • Effects of Sowing Date on Growth, Development and Yield of Photosensitive Sorghum at Samaru, Northern Nigeria

  • A. H. Kassam, D. J. Andrews
  • Published online by Cambridge University Press:
    03 October 2008, pp. 227-240

  • Performance of Short Kaura, a photosensitive Nigerian sorghum, was compared at Samaru in ten sowings in 1972. Except for a two-week interval between the fifth and sixth sowings, all sowings were at weekly intervals from 12 May to 21 July. Total dry weight and grain yield decreased with delay in sowing after 26 May at the rate of 1700 kg.ha.−1 week−1 and 360 kg. ha.−1 week−1 respectively. Each week's delay in sowing after 12 May shortened the total growth cycle by 5·9 to 6·0 days, with 77 to 78 per cent in the vegetative phase, 7 to 8 per cent in the head development phase and 14 to 16 per cent in the grain filling phase. Although the date of head initiation seemed to be determined by photoperiod, sowing date also had a small but definite effect.

Front matter

  • EAG volume 11 issue 2 Cover and Front matter

  • Published online by Cambridge University Press:
    03 October 2008, pp. f1-f4
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Reviews

Front matter

  • EAG volume 11 issue 3 Cover and Front matter

  • Published online by Cambridge University Press:
    03 October 2008, pp. f1-f4
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Reviews

Back matter

  • EAG volume 11 issue 3 Cover and Back matter

  • Published online by Cambridge University Press:
    03 October 2008, pp. b1-b2
    • Article
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Reviews

Back matter

  • EAG volume 11 issue 2 Cover and Back matter

  • Published online by Cambridge University Press:
    03 October 2008, pp. b1-b2
    • Article
      • You have access
    • PDF
    • Export citation

Reviews

Page 3 of 4