Contact Us


Mailing Address:
The Robert H. Smith Institute of
Plant Sciences and Genetics
in Agriculture
POB 12, Rehovot 76100, Israel

Administrator: Neomi Maimon 
Tel: 972-8-948-9251,
Fax: 972-8-948-9899,

Director: Prof. David Weiss
Tel: 972-8-948-9436
Fax: 972-8-948-9899



Questions and Answers


What are the assumptions and the main explanations for the use of foliage nutrition for plants that are in difficulty?


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6th Meeting

Movement of Calcium and Potassium to the Developing Fruit and their Agricultural Importance

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3d Meeting


Much of the nitrogen on earth is found in rocks (contrary to the intuitive guess) and not in the atmosphere, primarily in basal granite rocks. Minerals that develop from these rocks include ammonium, known as "fixed ammonium" or "crystallized ammonium". In sandy soils, with little clay  content or in shallow soils - the content of fixed ammonium is of course smaller.

In nature nitrogen is found with all possible degrees of oxidation as follows (the degree of oxidation appears in brackets):

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Prof. Uzi Kafkafi of the Field Crops Department in the Agriculture Faculty of the Hebrew University has the professional background and the ability to integrate ground theory and ground chemistry (in which he was involved for many years in the Faculty and in the Vulcani Centre) with plant biology and their environment. 

We hope that this book will assist readers towards a better understanding, correct planning and successful implementation of the fertilization of agricultural crops, and this will be our reward. 

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List of Publications

List of Publications 1990 - 2004

Tavori, G Abbo, S Kafkafi U and Schnug E 2004 Influence of nitrate- and sodium chloride on concentration and internal distribution of mineral elements in broad bean (Vicia faba L.) and chickpea (Cicer arietinum L.) accepted for publishing in:
Landbauforschung Volkenrode (FAL Agricultural Research) 54 (4), in print

Xu, GH Kafkafi, U., 2003 Seasonal differences in mineral content, distribution and leakage of sweet pepper seeds ANNALS OF APPLIED BIOLOGY, VL 143 (1) 45-52 

Prof. Uzi Kafkafi

Born: 1934, Tel Aviv
Degrees: Ph.D. 1963, The Hebrew Univ. of Jerusalem; Assoc. Prof. 1973; Prof. 1978.
Honors: IFA International Fertilizer award 1996

Research Interests

Nutrient consumption of field crops.
The effect of nutrition on fruit and seed quality. 
Interaction of plant nutrition and salt tolerance.
Plant root development under saline conditions. 
Agricultural development in arid and semi-arid lands.
The physiology of plants as affected by nitrogen nutrition.
The use of recycled sewage water for crop production.