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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 104728
Title Fertilizer requirements of cacao (Theobroma cacao L.) in South-Western Nigeria
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door M. Wessel
Author(s) Wessel, M.
Publisher Amsterdam : Koninklijk Instituut voor de Tropen
Publication year 1971
Description 104 p
Series title Communication / Department of agricultural research. Royal tropical institute (61)
Notes Proefschrift Wageningen
Tutors Schuffelen, Prof. Dr. A.C.
Graduation date 1971-02-26
Dissertation no. 482
Author abstract show abstract

The studies reported on were conducted in the period 1961-1970 when the author was employed by the Cocoa Research Institute of Nigeria at Ibadan, formerly a sub-station of the West African Cocoa Research Institute.

In the first three chapters information is given on the cacao industry and on the climate and soils in general and cacao soils in particular of the main cacao growing area of South-Western Nigeria. In the next chapter (4) a study on soil moisture is presented. In view of the long dry season the soil moisture relationships are the main factor determining the suitability of the soil for cacao. This chapter is followed by one on soil phosphorus which was found to be the main nutritional factor limiting yield as shown by the results of the fertilizer trials reported in chapter 6.

The results of an investigation on whether soil and leaf analysis can be used to assess the nutrient requirements of cacao are given in chapter 7. In the last chapter the results of the preceding chapters are summarized and discussed.

Analytical methods and sampling procedures are given in appendix I while some analyses of variance are given in appendix II. Most of the statistical analyses were carried out by the Statistics Department of Rothamsted Experimental Station, England.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,482
FORUM ; STACKS ; NN024680,61
FORUM ; STACKS ; NN08202,482
Keyword(s) (cab) plant nutrition / fertilizers / manures / theobroma cacao / cocoa / soil science / botany / nigeria
Categories Stimulant Crops
Publication type PhD thesis
Language English
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