Vol. 21 No. 3 (1973)

Papers

• Nitrogen nutrition of rice plants measured by growth and nutrient content in pot experiments. 4. Role of the water regime.

  W. Dijkshoorn, M. Ismunadji

  181-187

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• Rates of photosynthesis in leaves of wheat and barley varieties.

  G. Dantuma

  188-198

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• A comparison of some laboratory techniques for the estimation of the digestibility of the organic matter in forage samples.

  C.J. van der Koelen, A.J.H. van Es

  199-205

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• Grading and sorting as a method of market segmentation for agricultural products.

  M.T.G. Meulenberg

  206-216

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• Observations on the fermentation of carbohydrates along the gastro-intestinal tract of a fistulated cow.

  B.D.E. Gaillard, A.T. van 't Klooster

  217-226

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• A comparison between ammonium and nitrate nutrition of young sugar-beet plants grown in nutrient solutions at constant acidity. 1. Production of dry matter, ionic balance and chemical composition.

  H. Breteler

  227-244

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