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Chalapathi Rao, N. B. V.
- Field Efficacy of the Parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) on Coconut Slug Caterpillar, Macroplectra nararia Moore (Lepidoptera: Limacodidae)
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PDF Views:197
Authors
Affiliations
1 Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari - 533214, Andhra Pradesh, IN
1 Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari - 533214, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 33, No 4 (2019), Pagination: 382-384Abstract
The coconut slug caterpillar, Macroplectra nararia is one of the major pests of coconut plantations in Andhra Pradesh with periodic out breaks especially under favorable weather conditions. Though many parasitoids were identified against this sporadic out break pest, none were found amenable for laboratory rearing. A new larval parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) with a natural parasitisation ranging from 2 -10 per cent under field conditions was identified in slug affected coconut gardens in March 2015. This parasitoid was also found amenable for lab rearing on Bracon hebetor probably being facultative hyper parasitoid. Field release studies of lab reared P. imbrues against slug caterpillar in the affected coconut gardens revealed that a maximum of 41.41 and 50.31 per cent parasitsm of slug caterpillar, respectively, in 2017 and 2018 within 30 days after release and this promising parasitism provides scope for large scale field releases during slug caterpillar out breaks in view of major economic losses caused by the pest.Keywords
Coconut, Pediobius imbrues, Slug Caterpillar.Full Text
References
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- Efficacy of biopesticides under moderate infestation levels of exotic Rugose Spiraling Whitefly (RSW), Aleurodicus rugioperculatus Martin in coconut (Cocos nucifera L.) plantations
Abstract Views :112 |
PDF Views:66
Authors
P. V. RAGHUTEJA
1,
N. B. V. CHALAPATHI RAO
1,
E. PADMA
2,
A. KIREETI
1,
N. EMMANUEL
3,
K. UMAKRISHNA
2,
V. SEKHAR
2
Affiliations
1 Dr YSR Horticultural University, Horticultural Research Station (HRS), Ambajipeta, Dr BR Ambedkar Konaseema District - 533214, Andhra Pradesh, India ., IN
2 Dr YSR Horticultural University - College of Horticulture (COH), Venkataramannagudem - 534101, West Godavari District, Andhra Pradesh, India ., IN
3 Dr YSR Horticultural University - College of Horticulture (COH), Venkataramannagudem - 534101, West Godavari District, Andhra Pradesh, India., IN
1 Dr YSR Horticultural University, Horticultural Research Station (HRS), Ambajipeta, Dr BR Ambedkar Konaseema District - 533214, Andhra Pradesh, India ., IN
2 Dr YSR Horticultural University - College of Horticulture (COH), Venkataramannagudem - 534101, West Godavari District, Andhra Pradesh, India ., IN
3 Dr YSR Horticultural University - College of Horticulture (COH), Venkataramannagudem - 534101, West Godavari District, Andhra Pradesh, India., IN
Source
Journal of Biological Control, Vol 36, No 2 & 3 (2022), Pagination: 136 - 142Abstract
Field evaluation of various biopesticides viz., Beauveria bassiana, Isaria fumosorosea NBAIR pfu-5, Metarhizium anisopliae, Lecanicillium lecanii, azadirachtin and soapnut powder were carried out against coconut invasive Rugose Spiraling Whitefly (RSW), Aleurodicus rugioperculetus Martin at Ramachandrapuram and Ambajipeta (Dr BR Ambedkar Konaseema district, AP) during 2020-21 and 2021- 22. Pooled data analysis indicated that azadiracthin 10,000 ppm significantly reduced the nymphal population of RSW to the level of 25.74, 22.14, 17.67 and 15.82 nymphs per leaflet at 7, 14, 21 and 28 days after spray and was found superior among the different treatments tested. Regarding the reduction of the adult population, pest incidence and pest intensity, I. fumosorosea NBAIR pfu-5 spray was significantly superior compared to that of other treatments.Keywords
Bio pesticides, Coconut, Rugose Spiraling Whitefly (RSW), moderate incidence, managementFull Text
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