Int.J.Curr.Microbiol.App.Sci (2018) 7(1): 439-446 439 Original Research Article https://doi.org/10.20546/ijcmas.2018.701.051 Evaluation of Pre-Mix Fungicide, Fluxapyroxad and Pyraclostrobin 500 SC against Powdery Mildew (Oidium mangiferae) Disease of Mango M.R. Ravikumar 1* , Vithal Navi 2 and Yashaswini Sharma 3 1 Department of Plant Pathology, 3 Department of Horticulture, College of Agriculture, Hanumanamatti, Haveri, Karnataka-581 115, India 2 Department of Agri. Microbiology, College of Agriculture, Dharwad, Karnataka-581 115, India *Corresponding author ABSTRACT Introduction Mango (Mangifera indica L.) is one of the most popular juicy stone fruit belonging to the family Anacardiaceae. It is cultivated in frost- free tropical and warmer subtropical climates recognized as king of fruits. It is one of the best fruit in the world market because of its excellent flavor, attractive fragrance, beautiful colour, delicious taste and nutritious value. India stands first in global mango production (52%). However, the productivity of mango is International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 7 Number 01 (2018) Journal homepage: http://www.ijcmas.com Mango (Mangifera indica L.) is one of the best fruit in the world market affected powdery mildew disease which infects panicles, fruits and leaves causing up to 90 per cent crop loss. Hence, an investigation was initiated to study the bio-efficacy of different standard and new fungicides against powdery mildew disease. The experiment was conducted at Sirsi, Uttara Kannada District, Karnataka, India during 2012-14. Pre-mixture of Fluxapyroxad 250g/l +Pyraclostrobin 250g/l 500 SC is a new fungicide combination effective against fungi in pome and stone fruits. Eight treatments were imposed viz., Fluxapyroxad 250g/l +Pyraclostrobin 250g/l 500 SC @ 1ml/l, Fluxapyroxad 250g/l +Pyraclostrobin 250g/l @ 1.5 ml/l, Fluxapyroxad 250 g/l +Pyraclostrobin 250g/l @ 2 ml/l, Pyraclostrobin 20 WG @ 5 ml/l, Fluxapyroxad @ 3ml/l, Flusilazole 40 % EC @ 0.75 ml/l, Hexaconazole 5% SC @ 5 ml/l along with one untreated Control. Two sprays were taken up at 20 days interval during flowering stage. Among the different treatments, Fluxapyroxad 250g/l +Pyraclostrobin 250g/l 500 SC @ 2 ml/L of water recorded significantly lower per cent disease index of powdery mildew on leaves, inflorescence and fruits (18.00, 16.60 and 17.08, respectively) than control (54.73, 52.80 and 53.33 per cent disease index on leaves, inflorescence and fruits, respectively). The same treatment recorded maximum productivity (30.60 t/ha) as compared to control (15.00 t/ha). There were no visual symptoms of phyto-toxicty noticed in terms of leaf tips and surface injury, wilting, necrosis, epinasty and hyponasty on mango crop by Fluxapyroxad 250g/l +Pyraclostrobin 250g/l 500 SC treatment even at 4ml/l concentration. Keywords Mango, Powdery mildew, Fluxapyroxad, Pyraclostrobin, Phyto-toxicity Accepted: 06 December 2017 Available Online: 10 January 2018 Article Info