Vol. 20 No. 3 (1972)

Papers

• The action and durability of cetyl alcohol as an evaporation suppressant in soils.

  J.W. Kijne

  145-153

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• Research on some technical aspects of outdoor recreation, as part of multipurpose rural reconstructions in the Netherlands.

  H.N. van Lier

  154-179

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• Characterization of soil handling with mould-board ploughs

  J.K. Kouwenhoven, R. Terpstra

  180-192

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• Nitrate reductase activity and oxalate content of sugar-beet leaves.

  F. van Egmond, H. Breteler

  193-198

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• The determination of the clay content of soil by a semi-micro variation of the Robinson method

  A. Beverwijk

  199-202

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• The effect of local cooling on growth and water content of plants.

  A. Kleinendorst, R. Brouwer

  203-217

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• Experimental studies on seed production of tropical grasses in Kenya. 4. The effect of fertilizer and planting density on Chloris gayana cv. Mbarara.

  J.G. Boonman

  218-224

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