Vol. 21 No. 1 (1973)

Papers

• Experimental studies on seed production tropical grasses in Kenya. 6. The effect of harvest date on seed yield in varieties of Setaria sphacelata, Chloris gayana and Panicum coloratum.

  J.G. Boonman

  3-11

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• Experimental studies on seed production of tropical grasses in Kenya 7. The breeding for improved seed and herbage productivity.

  J.G. Boonman, A.J.B. van Wijk

  12-23

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• Microstructure, soil strength and root development of asparagus on loamy sands in the Netherlands.

  A. Reijmerink

  24-43

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• Studies on the amount and composition of digesta flowing through the duodenum of dairy cows. 2. Sites of net absorption of magnesium and calcium from the alimentary tract.

  A. Kemp, A. van't Klooster, P.A.M. Rogers, J.H. Geurink

  44-55

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• Influence of K/Ca ratio and drought on physiological disorders in tomato.

  J. van der Boon

  56-67

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• Effect of light intensity, temperature and daylength on the rate of leaf appearance of maize.

  H.D.G. Meyling

  68-76

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• Accumulation and distribution of mercury in Dutch soils.

  P. Poelstra, M.J. Frissel, N. van der Klugt, D.W. Bannink

  77-84

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• Aspects of agricultural use of potato starch waste water.

  F.A.M. de Haan, G.J. Hoogeveen, F. Riem Vis

  85-94

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