Vol. 25 No. 4 (1977)

Papers

• Some thoughts on the role of social sciences in the agricultural research centres in developing countries.

  D.B.W.M. van Dusseldorp

  213-228

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• Tulip bulb production potentials in Europe.

  H.G. Kronenberg

  229-237

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• Determination of leaf area coefficient in sunflower.

  A.S.R. Pereira

  238-242

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• The formation of methemoglobin by the action of nitrite on bovine blood.

  N. Vertregt

  243-254

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• The causes of the lack of self-tolerance of winter rye, grown on light sandy soils. 1. Influences of foot rots and nematodes.

  K. Scholte, L.J.P. Kupers

  255-262

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• Problem hydromorphic soils in north-east Thailand. 3. Saline-acid conditions, reclamation, improvement and management.

  R. Brinkman, P.J. Dieleman

  263-277

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• Maximization of arable crop yields in the Netherlands.

  L. Sibma

  278-287

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• The significance of gypsum applied to mushroom compost, in particular in relation to the ammonia content.

  J.P.G. Gerrits

  288-302

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• Aldrin, heptachlor and beta -hexachlorocyclohexane to dairy cows at three oral dosages. II. Residues post partum in milk and body fat of cows fed on pesticides in the dry period.

  K. Vreman, L.G.M. Th. Tuinstra, J. Bakker, J. van den Hoek, A.H. Roos, H. de Visser, J.H. Westerhuis

  303-312

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