Library Catalogue

Library Catalogue

  • external user (warningwarning)
  • Log in as
  • About the Catalogue

    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104202
Title A contribution to the knowledge of the importance of sodium for plant life : investigations with radioactive sodium
show extra info.
door J.M. Wybenga
Author(s) Wybenga, J.M.
Publisher [S.l. : s.n.]
Publication year 1957
Description 213 p ill., graf., tab
Notes Proefschrift Wageningen
Tutors Schuffelen, Prof. Dr. A.C.
Graduation date 1957-03-01
Dissertation no. 216
Author abstract show abstract
The literature indicated that Na increased availability of phosphate in the soil. In the plant Na was shown to strengthen tissues, particularly vascular and supporting tissues, to influence cell permeability and imbibition, and to decrease transpiration. In contrast to Rb (like Na able to replace K), Na proved to be selectively absorbed. It may also be selectively bound to cell substances.

Through autoradiographs with 22Na 3 groups of plants could be distinguished for quantitative transport of Na from the root to the stem and leaves. This distinction was consistent with the influence on production, which could be estimated within 6 weeks after sowing. Na +accumulated in the meristematic parts. The uptake and excretion of 22Na by oats was studied for three growth stages: germination until about 8 cm long, the cultural stage of 3 weeks and the experimental period of 6 days. Na was bound in plants in 3 ways: 1. Readily exchangeable with Na, Ca, K or Mg; 2. Fairly readily exchangeable with Na, but less readily with Ca, K or Mg (selective); 3. No easy exchange with other Na ions (specific).

The effects of top-dressing oats with NaNO 3 were extensively studied.

Online full textINTERNET
On paper FORUM ; STACKS ; 297C46
FORUM ; STACKS ; NN08202,216
Keyword(s) (cab) sodium
Categories Fertilizers, Fertilizer Application / Soil Fertility
Publication type PhD thesis
Language English
There are no comments yet. You can post the first one!
Post a comment

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.