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Assessment of repellency and insecticidal activity of Ajuga parviflora (Benth) and Trichilia connaroides (W&A) leaf extracts against stored product insects.

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Title Assessment of repellency and insecticidal activity
of Ajuga parviflora (Benth) and Trichilia
connaroides (W&A) leaf extracts against stored
product insects.
 
Creator Guruprasad, B. R.
Akmal, Pasha
 
Subject 05 Insect/Pest Control
 
Description Abstract
Repellency behavior and insecticidal activities of plant extracts of Ajuga parviflora and Trichilia
connaroides were studied against stored product insects viz., the lesser grain borer Rhyzopertha dominica
(F.), and the red flour beetle Tribolium castaneum (Herbst). The area preference method and dosemortality
was used to determine the repellency rate and insecticidal activity. The average repellency of
the methanol, petroleum ether and ethyl acetate extract concentrate per cm2 of both plant leaves totally
achieved class II, III, class IV and class V repellency respectively at different intervals (2, 4, 8 hours) of
time. The methanolic extract of A. parviflora and T. connaroides showed maximum repellency behavior
compared to other solvent systems. This extract was also found to be more effective than the commercial
product teflubenzuron (No: SZBB291XV) and also more effective than other solvent extracts mentioned
above. Our results indicate that the repellency behavior was dose and extract dependent and dosemortality
of the methanolic extract varied depending on the insect species. Moreover, T. castaneum was
susceptible to methanolic extract of A. parviflora and R. dominica was more susceptible to T.
connaroides extract.
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/12380/1/Journal%20of%20Entomology%20and%20Zoology%20Studies%202014%3B%202%20%284%29%20221-226.pdf
Guruprasad, B. R. and Akmal, Pasha (2014) Assessment of repellency and insecticidal activity of Ajuga parviflora (Benth) and Trichilia connaroides (W&A) leaf extracts against stored product insects. Journal of Entomology and Zoology Studies, 2 (4). pp. 221-226.