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International Journal of Applied Research
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ISSN Print: 2394-7500, ISSN Online: 2394-5869, CODEN: IJARPF

IMPACT FACTOR (RJIF): 8.4

Vol. 6, Issue 9, Part F (2020)

Ecofriendly naturally occurring neem derivatives: As an Omnipotent source of Bihar hairy caterpillar, Spodoptera litura Fabricius management

Ecofriendly naturally occurring neem derivatives: As an Omnipotent source of Bihar hairy caterpillar, Spodoptera litura Fabricius management

Author(s)
Indrani Dubey and BS Chandel
Abstract
A laboratory experiment was conducted out to assess the larvicidal biopotency of neem and it derivatives against third instars larvae of Bihar hairy caterpillar, Spodoptera litura Fabricius. The impact neem seed kernel extracts (NSKE), Neem leaf extracts (NLE) and neem based insecticide viz azadirachtin, bioneem, econeem, neemazal, neemarin, nimbecidine, azadirone and neemgold were tested by feeding Spodoptera litura Fabricius of mustard at Dept. of Zoology, DBS P.G.College Kanpur. The spraying of the insecticidal preparation was done in glass petridishes (10cm diameter) by potters spray tower, using 1.0 ml. of solution per petridish. Three treatments were introduce and each treatment with three replications, along with one control (Benzene + emulsified water). Ten third instars larvae of S. litura were released for feeding inside each pair of petri-dishes and allowed to remaining there up to 6hr, 12hr and 24hours under control conditions (25 + 1 oC temp. 75 + 2% relative humidity). The result on the insecticidal biopotency of different neem based insecticidal treatments showed that the treatment with Azadirachtin 68.63 per cent was found highly effective for the control of this pest followed by Bioneem which killed 67.12% against 3rd instar larvae of larvae of S. litura. The insecticidal biopotency of remaining neem based formulations were arranged in the following descending order on the basis of their respective relative mean mortality percentage of third instars larvae of larvae of S. litura i.e. Econeem (66.39%) >Neemgold (66.20%) > Neemazal (63.28%) > NSKE (60.75%) >Neemarin (56.49%) > NLE (54.87%) >Nimbicidine (50.26%) > Azadirine (44.98%) and control (12.22%), respectively. Thus the above mentioned meliaceous based insecticides was found to be the most economical insecticide against sawfly infesting mustard.
Pages: 505-510  |  238 Views  30 Downloads
How to cite this article:
Indrani Dubey, BS Chandel. Ecofriendly naturally occurring neem derivatives: As an Omnipotent source of Bihar hairy caterpillar, Spodoptera litura Fabricius management. Int J Appl Res 2020;6(9):505-510.
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