National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
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.
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