El-Sheikh Aly, M., ElShaer, A., Galal, A., Abd-Alla, H. and Eliwa, M. (2020) “Evaluation of different chemicals to control Erysiphe betae the causal pathogen of sugar beet powdery mildew”, Journal of Phytopathology and Pest Management, 7(1), pp. 91-108. Available at: http://ppmj.net/index.php/ppmj/article/view/205 (Accessed: 15August2022).