Vol. 20 No. 4 (1972)

Papers

• Experimental studies on seed production of tropical grasses in Kenya. 5. The effect of time of nitrogen top dressing on seed crops of Setaria sphacelata cv. Nandi.

  J.G. Boonman

  225-231

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• The effect of light intensity on some morphological and physiological aspects of the crop perennial ryegrass (Lolium perenne L. var. 'Cropper') and its effect on seed production.

  J.H.J. Spiertz, J. Ellen

  232-246

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• The significance of the fallow year in the dry-farming system of the Great Konya Basin, Turkey.

  B.H. Janssen

  247-260

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• Crop identification in the Netherlands by means of aerial false-colour film.

  H.D. Frinking

  261-271

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• Protein digestion in the stomachs and intestines of the cow.

  A.T. van 't Klooster, H.A. Boekholt

  272-284

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• Some investigations on Cox's disease in Cox's Orange Pippin apple trees, grafted on dwarfing rootstock M IX.

  B.W. Veen, J.T. Locher

  285-300

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• Theory of chromatography and its application to cation exchange in soils.

  P. Reiniger, G.H. Bolt

  301-313

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• Studies on the amount and composition of digesta flowing through the duodenum of dairy cows. 1. Rate of flow of digesta measured direct and estimated indirect by the indicator dilution technique.

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

  314-324

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