Incidence and management of bark eating caterpillar (Indarbela sp.) on aonla
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Date
2021-07-30
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ANDUAT, kumarganj, Ayodhya
Abstract
The studies on. Incidence and management of bark.eatingcaterpillar, Indarbela sp.
revealed that in Agronomy Research Farm of ANDUAT, the minimum incidence was
recorded in 1st SMW (65.73 %) and maximum incidence was racorded in 48 SMW (86.89
%).The average minimum number of active holes per infested tree were recorded in 1st
SMW(.66) and maximum number of active holes were recorded in 36 SMW(7.36). In
Main Experiment Station Horticulture of ANDUAT, the minimum incidence was recorded
in 1st SMW (55.5 %) and maximum incidence was racorded in 39 SMW (83.85%). The
average minimum number of active holes per infested tree were recorded in 1st SMW(.56)
and maximum number of active holes were recorded in 36 SMW(6.55). In Akma Research
farm of ANDUAT, the minimum incidence was recorded in 33 SMW (44.78 %) and
maximum incidence was racorded in 48 SMW (83.85%). The average minimum number of
active holes per infested tree were recorded in 33 SMW(.45) and maximum number of
active holes were recorded in 35 SMW(3.33). The data of relationship mean incidence of
bark eating caterpillar( Indarbela sp). with abiotic factor was worked out and infestation
had highly negative non-significant correlation with minimum temperature (-0.216NS) as
well as maximum temperature (-0.817**), however it was significant positive correlated
with relative humidity (0.761**) and non-significant negative correlated with rainfall (-
0.339) in the year of 2020. Among different managemeot practices Thrusting of wire in
active hole + plugging the hole with mud, thrusting of wire + plugging holes with cotton
swab dipped in Thiomethoxam WS proved quite effective in checking the infestation
causing 100 and 90 per cent larval mortality.
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Thesis