Prof. (em.) dr. Jan C. Zadoks

Jan C. Zadoks, born in Amsterdam, 1929, studied biology at the University of Amsterdam, graduating in 1957. He received his Ph.D. from the University of Amsterdam in 1961, with honours, and joined the Wageningen Agricultural University as a plant pathologist. He developed various courses in the area of plant disease epidemiology.

One course led to the book ‘Epidemiology and plant disease management’ by Zadoks & Schein, 1979. He served three years as Dean of the Wageningen School of Agriculture. His research was in wheat diseases mainly. He lectured in many countries and presented invitational key-note lectures to diverse assemblies. His 1974 scale for growth stages of cereals became UPOV and FAO standard.

Jan Zadoks served on several local and national committees, among which the Pesticides Registration Board of The Netherlands and the Committee on Genetic Modification of The Netherlands. Founding the ‘European and Mediterranean Cereal Rusts Foundation’, 1969, he took an interest in international agriculture. He performed consultancy missions overseas for FAO and for the Dutch and French governments. He participated in quinquennial reviews of Dutch, French, and International Agricultural Research Institutes. After retirement, 1994, he organised the XIIIth International Plant Protection Congress, 1995, in The Netherlands. He was awarded several national and international honours.


Books by Jan C. Zadoks

Black shank of tobacco in the former Dutch East Indies, caused by Phytophthora nicotianae

Original papers by Jacob van Breda de Haan, 1895 and Thung Tjeng Hiang, 1931 & 1938

Introduction, translation and discussion Jan C. Zadoks | 2014

Jacob van Breda de Haan is known as the author of the name Phytophthora nicotianae n.sp., the causal agent of ‘black shank’, an important disease...


Crop Protection in Medieval Agriculture

Studies in pre-modern organic agriculture

Jan C. Zadoks | 2013

Mediterranean and West European pre-modern agriculture (agriculture before 1600) was by necessity ‘organic agriculture’. Crop protection is part and parcel of this agriculture, with weed...








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