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 by two fungal diseases, powdery mildew and anthracnose 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 and anthracnose disease. The experiment was conducted at humid tropical regions of Karnataka, India during 2012-14 with six treatments of different fungicides, viz., Azoxystrobin 23% SC @ 1ml/L of water, Azoxystrobin 23% SC @ 2ml/L of water, Standard Azoxystrobin 250 SC (market Sample) @ 1ml/L of water, Standard Hexaconazole 5% SC @ 2ml/L of water, Standard Copper oxy chloride 50% WG @ 2.4g/ L of water along with one untreated Control. Two sprays were taken up at 20 days interval during flowering stage. Among the different treatments, Azoxystrobin 23% SC @ 2ml/L of water recorded significantly lower per cent disease index of powdery mildew on leaves, inflorescence and fruits (17.75, 17.24 and 16.64, respectively) than control (53.53, 51.94 and 50.10 per cent disease index on leaves, inflorescence and fruits, respectively). The same treatment recorded minimum incidence of anthracnose (6.94) and maximum productivity (28.63 t/ha) as compared to control (14.85 and 12.85 t/ha, respectively). 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 Azoxystrobin 23% SC treatment even at 4ml/L concentration.
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