New Perspectives Of Using Populin As Plant Extract Against Late Blight (Phytophthora Infestans Montagne) Resistant Strain

During this study were tested if 1 v/v% and 5 v/v% concentration of populin in comparison with commercially used fungicides may be useless against a resistant phytophthora strain. No development of hyphae was detected during the whole experiment when populin 5 v/v%, Valis and Ranman were applied. Inhibition effect of populin 1 v/v% was detected in a first day, while the hyphae growth started and increased during the experiment. The highest growth was detected at Infinito treatment, followed by control. According to the results it can be concluded that populin 5 v/v% can be a good alternative biological method to control phytophthora. Its effect can be compared with synthetic fungicides and according to the zero-growing rate of hyphae, we recommend its application.