Efficacy of Rhazya stricta leaf and seed extracts against Rhyzopertha dominica and Trogoderma granarium

Abid Mahmood Alvi, Naeem Iqbal, Muhammad Amjad Bashir, Muhammad Ishaq Asif Rehmani, Zabbeh Ullah, Abdul Latif, Qamar Saeed

Abstract


The protection of stored grains from insect pests depends upon highly toxic synthetic insecticides which cause a number of harmful effects on public health and environment. This necessitates finding eco-friendlier control measures of these stored insects pests. In this study, leaf and seed extracts of the local medicinal plant Rhazya stricta (Apocynaceae) were evaluated
for toxicity and repellency to Rhyzopertha dominica (Coleoptera: Bostrichidae) and Trogoderma granarium (Coleoptera: Bostrichidae) under laboratory conditions. The results show an increase in mortality (%) and repellency (%) with an increase in the concentrations of the extracts. After 120 h, the leaf extract caused the highest mortality (61.10 ± 1.20 - 72.11 ± 1.25%)
as compared to the seed extract (56.95 ± 3.26 - 69.50 ± 1.04) in both targeted insects. Leaf and plant extracts show maximum repellency (62.50 ± 1.73 - 47.20 ± 1.45%) in R. dominica and T. granarium at higher concentrations in comparison to lower concentration in the 24-hour trial. Our study suggests that leaf extracts of the medicinal plant R. stricta could be used as an
effective component of the integrated pest management program against stored grain pests.


Keywords


Stored grains, Rhazya stricta, plant extracts, toxicity, repellency, insect pests

Full Text:

PDF

References


Adam, S.E.I. (1998) Toxicity of Rhazya stricta to sheep. Veterinary and human toxicology. 40(2): 68-69

Ahmad, Y., Fatima, K. & Le-Quesne, P.W. (1983) Further alkaloidal constituents of the leaves of Rhazya stricta. Phytochemistry, 27(4): 1017- 1019.

Ahmedani, M.S., Haque, M.I., Afzal, S.N., Naeem, M., Hussain, T. & Naz, S. (2011) Quantitative losses and physical damage caused to wheat kernel (Triticum aestivum L.) by khapra beetle infestation. Pakistan Journal of Botany. 43(1): 659-668.

Al-Yahya, M.A., Al-Meshal, I.A., Mossa, J.S., Al-Badr, A.A. & Tariq, M. (1990) Saudi plants: A phytochemical and biochemical approach. King Saud University Press, Riyadh, Saudi Arabia.

Atta-ur-Rahman & Fatima, K. (1982) The alkaloids of Rhazya stricta and Rhazya orientalis. Journal of Chemical Society of Pakistan 4(2): 121–123.

Chaubey, M.K. (2011) Combinatorial action of essential oils towards pulse beetle Callosobruchus chinensis Fabricius (Coleoptera: Bruchidae). International Journal of Agricultural Research. 6(6): 1-6.

Dubey, N.K., Srivastava, B. & Kumar, A. (2008) Current status of plant products as botanical pesticide in storage pest management. Journal of Biopesticides. 1(2): 182-186.

El-Hag, E.A., El-Nadi, A.H. & Zaitoon, A.A. (1998) Effect of some plant extracts on two agriculture pests: Agrotis ipsilon (Lepidoptera: Noctuidae) and Hyper brunneipennis (Boh.) (Coleoptera: Curculionidae). Alexandria Journal of Pharmaceutical Sciences. 2(3): 141-145

EL-Hag, E.A., Harraz, F.M., Zaytoon, A.A. & Salam, A.K. (1996) Evaluation of Some Wild Herb Extracts for Control of Mosquitoes, (Culicidae, Diptera). Journal of King Saud University, Agricultural Sciences. 8(1): 135-145.

Hassan, M.M.A., Muhtadi, F.J. & Aziz, Q.A. (1977) Phytochemical investigation of Rhazya stricta growing in Saudi Arabia. Part 1: Total alkaloidal content and TLC screening. Bulletin of the Faculty of Science, Riyad University. 8: 167:174

Jilani, G., Saxena, R.C. & Khan, A.A. (1989) Ethylene production as an indicator of germination and vigor loss in stored rice seed infested by Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae). Journal of Stored Products Research. 25(3): 175-178.

Khan, S. & Khan, G.M. (2007) In Vitro Antifungal Activity of Rhazya stricta Decne. Pakistan Journal of Pharmaceutical Sciences. 20(4): 274-279

Madkour, M.H., Zaitoun, A.A. & Singer, F.A. (2013) Repellent and toxicity of crude extract on saw- toothed grain beetle (Oryzaephilus surinamensis L.). Journal of Food, Agriculture and Environment. 11(2): 381-384.

Madkour, M.H., Zaitoun, A.A. & Singer, F.A. (2012) Efficacy of three plant species extracts in the control of Trogoderma granarium Everts (Coleoptera: Dermestidae). Journal of Food, Agriculture and Environment, 10(2): 1200-1203.

Marwat, S.K., Rehman, F.U., Usman, K., Shah, S.S., Anwar, N. & Ullah, I. (2012) A review of phytochemistry, bioactivities and ethno medicinal uses of Rhazya stricta Decsne (Apocynaceae). African Journal of Microbiology Research. 6(8):1629-1641.

Padín, S.B., Fusé, C., Urrutia, M.I. & Bello, G.M.D. (2013) Toxicity and repellency of nine medicinal plants against Tribolium castaneum in stored wheat. Bulletin of Insectology. 66: (1):45-49

Sharifian, I., Hashemi, S.M., Aghaei, M. & Alizadeh, M. (2012) Insecticidal activity of essential oil of Artemisia herba-alba Asso against three stored product beetles. Biharean Biologist. 6(2): 90-93.

Toews, M.D., Cupercus, G.W. & Phillips, T.W. (2000) Susceptibility of eight US wheat cultivars to infestation by Rhizopertha dominica (Coleoptera: Bostrichidae). Environmental Entomology. 29(2): 250-255.


Refbacks

  • There are currently no refbacks.