EFFECT OF DIFFERENT COMMERCIAL AND CRUDE NEEM FORMULATIONS ON GROWTH PARAMETERS AND FECUNDITY OF DIAPHANIA PULVERULENTALIS (HAMPSON) (LEPIDOPTERA: PYRALIDAE) INFESTING MULBERRY

S. HARISH BABU¹*, K.C. NARAYANASWAMY², K.S. JAGADISH^3
1Scientist-B, Regional Sericultural Research Station, Central Silk Board, Kalimpong, West Bengal, 743301, India
²Department of Sericulture, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
³Department of Agricultural Entomology, University of Agricultural Sciences, GKVK, Bengaluru,560065, India
* Corresponding Author : harishbabuseri@gmail.com

Received : 02-04-2019     Accepted : 12-04-2019     Published : 15-04-2019
Volume : 11     Issue : 7       Pages : 8246 - 8248
Int J Agr Sci 11.7 (2019):8246-8248

Keywords : Neem Formulations, D. Pulverulentalis
Academic Editor : Naveen Kumar V M, Dr M. R. Siddhapara
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to University Grants Commission (UGC), New Delhi in the form of Rajiv Gandhi National Fellowship (RGNF) and Sr. Research Fellowship in the adhoc project and gratefully acknowledged. Authors are also thankful to University of Agricultural Sciences, GKVK, Bengaluru, 560065
Author Contribution : All authors equally contributed

An experiment was conducted under laboratory condition, at the Department of Sericulture, UAS, GKVK, Bengaluru, wherein six neem formulations viz., Neemark, Nimbecidine, Solarneem, Limonool, Neem oil and NSKE were screened against larvae of D. pulverulentalis at the concentrations of 0.5, 1.0, 2.0, 4.0 and 8 percent each. Among these treatments, NSKE at 0.5, 1.0, 2.0 and 4.0 percent, recorded significantly lowest larval weight of 0.03, 0.02, 0.02 and 0.01 g, respectively, whereas in NSKE treatment at 8.0 percent the larvae did not survive indicating its significant superiority. The four concentrations of NSKE viz., 1.0, 2.0, 4.0 and 8.0 percent were on par with each other with respect to the larval weights. However, significantly maximum larval weight was recorded in untreated control (0.16 g). The pupal weight was recorded to be significantly maximum in untreated control (0.09 g), whereas, it was 0.01 g at 0.5 percent concentration of NSKE. However, the pupae did not survive in any of the other concentrations of NSKE that were tested. The moth emergence was lowest (10.00 %) at 0.5 percent concentration of NSKE. The maximum moth emergence (83.33%) and fecundity (110.00) was recorded in case of untreated control whereas the pest did not survive at 0.5, 1.0, 2.0, 4.0 and 8.0 percent concentrations of NSKE. The findings clearly demonstrated the superiority of NSKE over other neem formulations for the suppression of D. pulverulentalis on mulberry.

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