New techniques for counting and isolating free living nematodes from small soil samples and from oak forest litter
Over de resultaten van verschillende methoden voor her bepalen van vrijbeweeglljke aaltjes in grond. [English title not ...
From comparison of published data on ten methods of extracting nematodes from soil, Oostenbrink concluded that the two methods most satisfactory in time-saving and quantitative recovery were his elutriation method (Oostenbrink 1954) and the centrifuge method of Caveness & Jensen (1955) [for abstracts see Helm. Abs. 23, No. 448b and 24, No. I43g, re...
Beoordeling van de fosfaattoestand van Limburgse löss- en rivierkleigronden
Onderzoek naar de kopertoestand in de ruilverkavelingen "Montfort", Ospelse Peel" en "Meyel"
Das Vorkommen von Artgemischen bei pflanzenparasitaren Nematoden. [English title not available]
The author has investigated the occurrence of mixtures of two or more species of a genus at the same place for six genera of plant-parasitic nematodes (Heterodera, Pratylenchus, Paratylenchus, Tylenchorhynchus, Rotylenchus and Meloidogyne), and shows how one species may become dominant as a result of a particular cropping or soil type, and may be s...
Der Transport von Pratylenchiu penetrans (Nematoda) mit Pflanzgut. [English title not available]
Pratylenchus penetrans and P. pratensis were shown not to be parasites of the potato tuber although potato roots can harbour considerable populations. Normally stored tubers from infested fields would not be a source of infestation. Nursery stock of various trees can be a carrier of the eelworms, particularly P. penetrans, but if planted in nematod...
De reactie van de biet op kalk-kali-verhoudingen in de grond : verslag van een interprovinciale serie kalk-kali-proefvel...
The exchangeable cations in soils flooded with sea water
The changes in the exchangeable cations of soils flooded with sea-water were extensively studied in the Netherlands after the inundations of 1940, 1945 and 1953. A synopsis of the results was given, both from a theoretical and a practical viewpoint.Current formulae for ion-exchange tested in the laboratory gave fair descriptions for the competition...
Bewerking van C/N-gegevens uit Overijsel en de Gelderse Achterhoek
De toepassing van de additiemethode bij de spectrochemische bepaling van sporenelementen in grondmonsters
