Vol. 23 No. 3 (1975)

Papers

• Seventy-five years of research at Naaldwijk

  E. Kooistra

  179-180

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• Osmotic pressure of the soil solution: determination and effects on some glasshouse crops.

  J. Van den Ende, P. Koornneef, C. Sonneveld

  181-190

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• The effect of some salts on head weight and tipburn of lettuce and on fruit production and blossom-end rot of tomatoes.

  C. Sonneveld, J. Van den Ende

  191-201

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• CO2 from gas-fired heating boilers - its distribution and exchange rate.

  N. van Berkel

  202-210

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• Self-stopping tomatoes - cultural and economic aspects.

  A.J. de Visser, K. Buitelaar

  211-218

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• Artificial irradiation for lettuce plant raising - technical and economic aspects.

  A.J. de Visser, J. van de Vooren

  219-223

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• Plant density of year-round chrysanthemums.

  A.P. van der Hoeven, C.P. Mol, J.A. van der Steen

  224-230

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• Transport systems in glasshouse horticulture.

  A.T.M. Hendrix

  231-237

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• The climate glasshouse at Naaldwijk.

  J. van de Vooren, R. Koppe

  238-247

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• The relationship between plant quality and yields of glasshouse tomatoes.

  L.S. Spithost

  248-258

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• Growth rates of tomato seedlings and seasonal radiation.

  D. Klapwijk, P.J.A.L. de Lint

  259-268

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• The relationship between the Aphis gossypii Glover group and cucumber mosaic virus in autumn cucumbers.

  W.M.T.J. de Brouwer, H.J.M. van Dorst

  269-278

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• Thiram residues on glasshouse lettuce.

  D. Theune, L. Bravenboer

  279-284

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