Search

Your search keyword '"van der Meer, K."' showing total 15 results
Start Over Author "van der Meer, K." Publication Year Range More than 50 years ago
15 results on '"van der Meer, K."'

2. De bloembollenstreek : resultaten van een veldbodemkundig onderzoek in het bloembollengebied tussen Leiden en het Noordzeekanaal

Author

van der Meer, K., Wageningen University, and C.H. Edelman

Subjects
Stichting voor Bodemkartering, kaarten, maps, zuid-holland, bollenstreek, bodemvorming, Soil Survey Institute, noord-holland, soil formation, bodemkarteringen, soil surveys
Abstract

The Dutch Bulb Fields are situated on the Beach-ridge landscape between the Rhine Estuary and the Y-Polders in the mid-western part of North Holland and South Holland. Culture of some horticultural crops (tulips, daffodils) is important in this area because of the special requirements of these crops: rather coarse, calcareous, deep sandy and highly porous soils easy to penetrate by roots, without organic matter, without impermeable layers and a stable watertable. Continuous deep digging is inevitable. Soil formation (mainly decalcification) in the beach ridges over some 3000 years has caused non-calcareous topsoils and a slight podsolization; the soils have been improved by digging off sand. The area has been influenced by peat growth, marine and estuarine sediments and shifting sand. The soil survey resulted in a soil map, indicating soil quality. From the results ensued the recommendation of improving soil by suction dredging. This had to be planned and carried out very carefully, because the formation of humous and clayey layers in the new profile would make the soil completely unsuitable for valuable horticultural crops. Geological studies on Middle and Late Holocene geology and stratigraphy showed that the beach ridges were formed during and after the deposition of the Atlantic Old Marine Clay (4000-2000 B.C.).

Published
1952

4. Over de invloed van regenwormen op de bodemstructuur in gemulchte boomgaarden

Author

Hoeksema, K.J., Jongerius, A., and van der Meer, K.

Subjects
orchards, Stichting voor Bodemkartering, pore volume, porosity, aardwormen, soil density, porositeit, vruchtbomen, earthworms, Soil Survey Institute, fruit trees, bodemdichtheid, boomgaarden, poriënvolume
Abstract

Oorspronkelijke uitgave: Heidemijtijdschrift 67

Published
1956

8. Rapport betreffende de bodemkundige toestand van Walcheren

Author

Bennema, J. and van der Meer, K.

Subjects
Stichting voor Bodemkartering, kaarten, maps, netherlands, zeeland, Soil Survey Institute, bodemkarteringen, soil surveys, nederland
Abstract

Bodemkundige inventarisatie Stiboka

Published
1948

10. De bodemgesteldheid van de polder Hoedekenskerke

Author

van der Meer, K. and Ovaa, I.

Subjects
Stichting voor Bodemkartering, kaarten, maps, netherlands, zeeland, Soil Survey Institute, bodemkarteringen, soil surveys, nederland
Published
1953

13. De bloembollenstreek : resultaten van een veldbodemkundig onderzoek in het bloembollengebied tussen Leiden en het Noordzeekanaal

Author

Edelman, C.H., van der Meer, K., Edelman, C.H., and van der Meer, K.

Abstract

The Dutch Bulb Fields are situated on the Beach-ridge landscape between the Rhine Estuary and the Y-Polders in the mid-western part of North Holland and South Holland. Culture of some horticultural crops (tulips, daffodils) is important in this area because of the special requirements of these crops: rather coarse, calcareous, deep sandy and highly porous soils easy to penetrate by roots, without organic matter, without impermeable layers and a stable watertable. Continuous deep digging is inevitable. Soil formation (mainly decalcification) in the beach ridges over some 3000 years has caused non-calcareous topsoils and a slight podsolization; the soils have been improved by digging off sand. The area has been influenced by peat growth, marine and estuarine sediments and shifting sand. The soil survey resulted in a soil map, indicating soil quality. From the results ensued the recommendation of improving soil by suction dredging. This had to be planned and carried out very carefully, because the formation of humous and clayey layers in the new profile would make the soil completely unsuitable for valuable horticultural crops. Geological studies on Middle and Late Holocene geology and stratigraphy showed that the beach ridges were formed during and after the deposition of the Atlantic Old Marine Clay (4000-2000 B.C.).

Published
1952

Catalog

Books, media, physical & digital resources
See catalog results