Medicinal importance and implementation of Pakistanian Annona squamosa seed's essential oil: As a botanical pesticide
2013
Tariq, R.M. (Karachi Univ. (Pakistan). Dept. of Zoology) | Azmi, M.A. (Karachi Univ. (Pakistan). Dept. of Zoology) | Rizvi, S.G. (Federal Urdu Univ. of Arts, Sciences and Technology, Karachi (Pakistan). Dept. of Zoology) | Chaudhary, M.I. (Karachi Univ. (Pakistan). International Centre for Chemical and Biological Sciences) | Naimul-Hasan, N. (Baqai Medical Univ., Karachi (Pakistan). Dept. of Pharmacology)
The Pakistanian Annona squamosa (Fam.: Annonaceae) is locally found (Nasir, 1978) in Pakistan specially in Sindh. In the present paper the essential oil of An. squamosa seeds was tested against dengue fever virus vector mosquito, Ae. aegypti larvae (3rd instar) The LC50 was found to be 1250ppm by WHO-method 1970). The IGR effects were observed on lower i.e. 150, 300, 450, 600 and 750ppm doses. The abnormalities increased with the increase of dose. Phytotoxicity on cotton crop was recorded at the dose of 1.5 litre/acre, whereas no phytotoxicity was recorded on mango tree and coconut plants up to the dose of 2 litres/acre. While 70-90% control of mango hoppers in Mirpurkhas Sindh & rhinoceros beetles on coconut plants in Hub, Balochistan was recorded. Anti-fungal activity was recorded on cuts & wounds on sheep in Hub, Balochistan. The Annona seed's oil prevents the cuts & wounds from fungal growth and the cuts & wounds heal up rapidly as compared to control. Systematic control of root knot nematode was also recorded in cotton and brinjal plants by using 0.25% solution of Annona seed's oil, given to the infected plants. The scale insects were also controlled by the same systematic method by using 0.5% dilution to the infected cotton plants. The control of mealy bugs on cotton, brinjal and Abutilon indicum was achieved by spray method using 0.5% solution, repeated weekly for one month in Sindh and Balochistan. Beside this the different aspects of Annona seed's oil activity and suggestions for implementation as biopesticide in agriculture and health sector with special reference to Pakistan have been discussed in detail.
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