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Abo Arab, R., Metwally, M. (2005). EFFICIENCY OF Eichhornia crassipes AS PROTECTANT AGAINST SOME STORED PRODUCT INSECTS. Journal of Plant Protection and Pathology, 30(1), 623-634. doi: 10.21608/jppp.2005.238593
R. B. Abo Arab; M. M. Metwally. "EFFICIENCY OF Eichhornia crassipes AS PROTECTANT AGAINST SOME STORED PRODUCT INSECTS". Journal of Plant Protection and Pathology, 30, 1, 2005, 623-634. doi: 10.21608/jppp.2005.238593
Abo Arab, R., Metwally, M. (2005). 'EFFICIENCY OF Eichhornia crassipes AS PROTECTANT AGAINST SOME STORED PRODUCT INSECTS', Journal of Plant Protection and Pathology, 30(1), pp. 623-634. doi: 10.21608/jppp.2005.238593
Abo Arab, R., Metwally, M. EFFICIENCY OF Eichhornia crassipes AS PROTECTANT AGAINST SOME STORED PRODUCT INSECTS. Journal of Plant Protection and Pathology, 2005; 30(1): 623-634. doi: 10.21608/jppp.2005.238593

EFFICIENCY OF Eichhornia crassipes AS PROTECTANT AGAINST SOME STORED PRODUCT INSECTS

Article 4, Volume 30, Issue 1, January 2005, Page 623-634  XML PDF (500.42 K)
Document Type: Original Article
DOI: 10.21608/jppp.2005.238593
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Authors
R. B. Abo Arab; M. M. Metwally
Plant Protection Research Institute, Agric. Res. Center, Giza, Egypt.
Abstract
Powder and 3 solvent crude extracts obtained from dry ground leaves of Eichhornia crassipes (Mart) Solm. (Pontederaceae) using acetone, methanol and petroleum ether were evaluated under laboratory conditions (30 ±1°C, 65±5% rh) for their bioinsecticidal activity against two strains (laboratory and resistant) of Triboleum castaneum (Herbst.), Sitophilus oryzae (L.) and Callosobruchus maculatus (F.). All levels of the dry ground leaf  concentrations inhibited F1 progeny production and adult emergence of the tested insects. The dosage of 1% of petroleum ether extract killed 100% of S. oryze and C. maculatus after 9 days of application, while caused 26% mortality of T. castaneum at the same exposure time. Also, all levels of tested extracts have deterioration effect on biology of both S. oryzae and C. maculatus. C. maculatus adults were more tolerant than other tested insects at 2 days posttreatment with LC50 of 345.97 mg/cm2 except for T. castaneum (RS) which had LC50 of 503.22 mg/cm2, however it exhibited no resistance to petroleum ether extract. Acetone and methanolic extracts exhibited low toxicity against the tested insects.
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