“Biology and Management of pomegranate fruit borer, Deudorix isocrates (Fab.) (Lepidoptera:Lycaenidae)”
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Date
2019-11-12
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COLLEGE OF HORTICULTURE AND FORESTRY, DR Y S P UHF, NERI, HAMIRPUR
Abstract
The biology studies revealed that female laid white creamish circular eggs in mid April either singly or in clusters (15-20) in the fruit, calyx cup and upper leaves. There were five larval instars incase of pomegranate fruit borer having total larval period ranged from 26 to 32 days with an average 29.4 ± 0.6 days. Pupa was obtect and light to dark brown in color. In case of adult sexual dimorphism was observed as females were bigger in size, brownish violet and having conspicuous orange patches in forewings. Male was smaller in size, glossy bluish violet and no orange patches in forewings. The total life cycle completed in 54 to 72 days with an average of 64.1 ± 2.37 days. The efficacy studies revealed that after the fourth spray the experimental result showed that the percent infestation in all the treatments were below 20 per cent and whereas in control, it was found around 51.67 per cent. When the mean per cent infestation after each foliar application compared the experimental results showed that among the tested treatments the per cent infestation was lowest in spinosad 45SC @0.004% (8.19%) followed by Flubendiamide 20% WG @0.02% (9.17%) and incase of biopesticides Agniastra @5% (9.58%) proved significantly superior to all other insecticides/biopesticides with avoidable losses value of these tested treatments were 73.03%, 72.52% and 70.55% respectively. All the non chemical methods proved significantly superior to the control. No phytotoxicity symptoms were recorded in any of the treatments.
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