Vol. 28 No. 4 (1980)

Papers

• Growth analysis and shade experiment with Solanum nigrum L., the black nightshade, a leaf and fruit vegetable in West Java.

  F.T.J.M. Fortuin, S.W.P. Omta

  199-210

  • PDF

• Relation between nutrition and fertility in pigs.

  L.A. den Hartog, G.J.M. van Kempen

  211-227

  • PDF

• Accumulation of heavy metals in the soil due to annual dressings with sewage sludge.

  O.J. Hemkes, A. Kemp, L.W. van Broekhoven

  228-237

  • PDF

• The formation of volatile N-nitrosamines in grass and maize silages.

  L.W. van Broekhoven, J.A.R. Davies

  238-242

  • PDF

• The effect of cutting frequency and nitrogen fertilizer rates on dry matter production, nitrogen uptake and herbage nitrate content.

  L. Sibma, T. Alberda

  243-251

  • PDF

• Soil surface albedo and multispectral reflectance of short-wave radiation as a function of degree of soil slaking.

  G. van der Heide, A.J. Koolen

  252-258

  • PDF