Vol. 21 No. 4 (1973)

Papers

• Gibberellic acid flower formation and stem elongation in Silene armeria.

  S.J. Wellensiek

  245-255

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• The effect of chopped hay on feed intake, rate of eating and rumination of dairy cows.

  G.C.J. Voskuil, J.H.M. Metz

  256-262

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• Some experiments on supply of ions to the absorbing root surface.

  L.K. Wiersum

  263-268

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• Dispersion in simulation models of population growth and salt movement in the soil.

  J. Goudriaan

  269-281

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• Effects of successive applications of maneb and benomyl on growth and yield of five wheat varieties of different heights.

  J.H.J. Spiertz

  282-296

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• A comparison between ammonium and nitrate nutrition of young sugar-beet plants grown in nutrient solutions at constant acidity. 2. Effect of light and carbohydrate supply.

  H. Breteler

  297-307

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