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Library Catalogue

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    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 104207
Title Interrelationships between potassium and magnesium absorption by oats (Avena sativa L.)
show extra info.
door F. Yoshida
Author(s) Yoshida, F.
Publisher Wageningen : Pudoc
Publication year 1964
Description 103 p ill
Notes Proefschrift Wageningen  show all notes
Ook verschenen als: Verslagen van landbouwkundige onderzoekingen; 642
Ook verschenen als handelsuitgave
ISBN 9022001032
Tutors Schuffelen, Prof. Dr. A.C.
Graduation date 1964-05-06
Dissertation no. 364
Author abstract show abstract
Interactions in Mg and K uptake were studied especially in relation with the following factors affecting ion uptake, a. the mechanisms of absorption of both ions involved, b. the relationship between absorption of the ions and their concentrations in the nutrient solution, c. the relationship between absorption of the ions and their ratios in the nutrient solution, particularly K: Mg, and the effects of H, Ca, N and P on the absorption of K and Mg.

These factors were examined in long and short experiments. Results were tested for correspondence with the carrier theory and the adsorption theory of ion absorption. Both theories proved useful in explaining the characteristics of ion absorption in oats. The possibility of a system of adsorption before absorption of ions through a carrier system was considered but was not further explored in this study. The mathematical models for a combination of the two systems were similar to those employed for the carrier theory.

In both tops and roots of oat plants grown in the long-term experiment, Mg and K contents were inversely correlated. This antagonism could be explained as competition for carrier sites common for both ions. Mg absorbed by the root mechanism common for Mg and K was not transported into tops in the shortterm experiment, when plants had low ratios of K:Mg.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,364
FORUM ; STACKS ; NN08202,364
Keyword(s) (cab) oats / avena sativa / plant nutrition / fertilizers / manures / magnesium / potassium
Categories Cereals / Plant Nutrition Physiology / Fertilizers, Fertilizer Application
Publication type PhD thesis
Language English
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