Evaluation of integrated disease management modules against major diseases downy mildew of opium poppy

Abstract

Downy mildew of opium poppy (Papaver somniferum L) caused by Peronospora arborescens has been occur in India since 1918 and reported to reduce quality and quantity of opium. Field experiment was carried out during rabi, 2019 and 2020 with 9 treatments to find out suitable integrated disease management strategy. The results have demonstrated that furrow application of FYM (500g/m2) enriched with T. harzianum + P. fluorescens @ 2.0%, 4-5 days prior to sowing along with seed treatment in streptocycline sulphate @ 0.030% (300ppm) and metalaxyl @ 2.5g/kg. On appearance of disease symptoms first spray of T. harzianum and P. fluorescens @ 0.5 % after 15 days intervals second and third spray with streptocycline sulphate @ 0.030% (300ppm) and metalaxyl @ 0.25% was gave significant effect for minimized downy mildew disease and enhanced latex and seed yield of opium poppy.