Effectiveness of systemic fungicides against mustard powdery mildew caused by Erysiphe cruciferarum (Opiz. ex. L. Junell) under screen house conditions

Abstract

Powdery mildew of Mustard incited by Erysiphe cruciferarum is considered to be the most devastating disease occurring all over the world. The present investigation on "Management of Mustard Powdery Mildew caused by Erysiphe cruciferarum Opiz ex. Junell." was undertaken during 2024-2025. Mustard yield is affected by several diseses like powdery mildew, alternaria blight, sclerotiana stem rot, white rust, downy mildew and damping off. India yield losses due to Mustard powdery mildew are ranging between 10-90%. Powdery mildew is predominantly observed on the adaxial (upper) leaf surface. Present study is under taken on different systemic fungicides to find out effectiveness against Mustard powdery mildew. Among six systemic fungicides Propiconazole 25% EC was most effective against powdery mildew, followed by Difenconazole 25% EC and Azoxystrobin 23% SC, Hexaconazole 5% EC, Carbendazim 50% WP and Kresoxim-methyl 44.3% SC. Water spray is superior over the Kresoxim-methyl 44.3% SC in systemic fungicides.