 affects leaves, causing yellowing, drying, necrosis, and defoliation. Losses in fruit production due to early plant senescence can reach up to 50% in commercial production regions where powdery mildew is severe. <br><br>
            <span style="font-weight:bold">Powdery mildew
                </span> (Oidium neolycopersici, Erysiphe orontii, and Leveillula taurica) of tomato is caused by the fungus Oidium neolycopersici, an obligate parasite that obtains nutrients only from living plant tissues. It is an 