QUANTITATIVE STUDIES ON THE INFECTION CHAINS OF POTATO LATE BLIGHT

<正> The annual course of the development of potato late blight, caused by Phytophthora infestans (Mont.) de Bary, has been the subject of many studies and speculations for almost a century. Only in the last decade, however, were accumulated enough data from large amount of field observations and experimentations recorded in the literature and carried out by ourselves to make possible a systematic quantitative descrintion with reasonable degree of