PROCEEDINGS OF THE HORTICULTURE SEMINAR ON SUSTAINABLE HORTICULTURAL SUSTAINABLE HORTICULTURAL SUSTAINABLE HORTICULTURAL SUSTAINABLE HORTICULTURAL PRODUCTION IN THE TROPICS PRODUCTION IN THE TROPICS PRODUCTION IN THE TROPICS PRODUCTION IN THE TROPICS 3 rd to 6 th October 2001, Jomo Kenyatta University of Agriculture and Technology (JKUAT), Juja – KENYA EDITORS Wesonga, J.M.; T. Losenge; C.K. Ndung’u, K. Ngamau, F.K. Ombwara and S.G. Agong (JKUAT) A. Fricke; B. Hau and H. Stützel (Hannover) Department of Horticulture Jomo Kenyatta University of Agriculture and Technology, Kenya, in collaboration with Institute of Vegetable and Fruit Science and Institute of Plant Diseases and Plant Protection University of Hannover, Germany. DAAD-German Academic Exchange Services