Management of powdery mildew of okra through plant extracts and chemicals under field conditions

Different plant extracts and chemicals were evaluated against powdery mildew of okra under field condition, in experimental area of Department of Plant Pathology, University of Agriculture Faisalabad. A highly susceptible variety Click-5769 was grown in field to check the efficacy of different plant extracts and chemicals against powdery mildew disease ( Saccharum erysiph ) of okra. In chemicals at standard dose, Score (Diphenoconazole, 0.2%) expressed significant results, after third spray disease incidence was 21% followed by Topsin-M (Thiophenate Methyle, 0.1%) 32.3%, Clipper (Copper oxychloride, 0.5%) 47.67%, Systhane (Michlo Butanil, 0.05%) 54.3%, Benomyl (Cymoxinil, 0.5%) 59% disease incidence as compare to control. Three concentrations 5, 10 and 15% of five plant extracts were used to manage the disease. Among them Neem gave best results at each concentration. After third spray at 15% concentration Neem ( Azadirachta indica ) reduced 23.2% disease incidence, followed by Garlic ( Allium sativum )36.89%, Ginger ( Zingiber officinale ) 42.1%, Dhatura ( Datura stramonium ) 48.4%, Onion ( Allium cepa ) 52.33% disease incidence as compare to control.