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Biological suppression of coconut black headed caterpillar Opisina arenosella outbreak in East Godavari district of Andhra Pradesh – eco friendly technology

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Title Biological suppression of coconut black headed caterpillar Opisina arenosella outbreak in East Godavari district of Andhra Pradesh – eco friendly technology
 
Creator N. B. V. Chalapathi Rao
A. Nischala
G. Ramanandam
H. P. Maheswarappa
 
Subject Biological control, coconut, Opisina arenosella, outbreak, parasitoids.
 
Description Not Available
The leaf eating black headed caterpillar Opisina arenosella
is a serious pest of coconut palm causing
significant yield loss in all the coconut growing tracts
of India. During 2015–16, a high infestation of black
headed caterpillar was observed in all the coastal districts
of Andhra Pradesh, and an incidence ranging
from 42.82% to 62.86% was recorded. From October
2015 to April 2016 inundative releases of about
3,788,000 larval parasitoids Bracon hebetor and Goniozus
nephantidis were carried out in pest affected gardens
in Allavaram and Uppalaguptam mandals of
East Godavari. To study the impact of the parasitoid
releases, 10 leaflets/palm were randomly collected
from 10 sample gardens in seven villages of these
mandals and the pest population recorded. After three
months of parasitoid release, the larval population of
O. arenosella decreased by 34.08–75.88%, pupal population
by 33.33–94.52%, and the paralysed larval population
recovered was 8.30–26.92%. After six months,
the larval population decreased by 59.65–100%, the
pupal population up to 92.77–100% and the paralysed
larval population recovery was also high, ranging
from 18.68% to 34.61%. The impact of inundative
release of bio agents for suppression of leaf eating
caterpillar was prominent, after six months providing
impetus to the role of biological control in pest management.
The assumed overall economic loss prevented
due to this intervention was 192.6 million rupees.
 
Date 2018-11-26T10:37:39Z
2018-11-26T10:37:39Z
2018-10-25
 
Type Journal
 
Identifier N. B. V. Chalapathi Rao1,*, A. Nischala1, G. Ramanandam1 and H. P. Maheswarappa. 2018. Biological suppression of coconut black headed caterpillar Opisina arenosella outbreak in East Godavari district of Andhra Pradesh – eco friendly technology. 115(8): 1588-1594.
http://krishi.icar.gov.in/jspui/handle/123456789/13443
 
Language English
 
Publisher Indian Institute of Science