Dispersal of the Fusarium Wilt Pathogen in Furrow-Irrigated Cotton in Israel. A. Grinstein, Instructor, Department of Plant Pathology and Microbiology, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot. G. Fishler, Regional Cotton Research Leader, Eden Experiment Station, J. Katan, Professor, Department of Plant Pathology and Microbiology, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76-100, and D. Hakohen, Cotton Growers Committee, Kibbutz Beit Alpha, Israel. Plant Dis. 67:742-743. Accepted for publication 7 January 1983. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-742.

Spread of the wilt-causing Fusarium oxysporum f. sp. vasinfectum in a furrow-irrigated Pima cotton (Gossypium barbadense) field was recorded from 1977 to 1979 by infrared aerial photography and disease rating techniques. The primary loci of the disease spread mainly with the direction of the water flow. Furrow irrigation is important in dissemination of this wilt pathogen.