TOXICOLOGICAL STUDIES ON SOME NATURAL PLANTS IN NORTH SINAI AGAINST SITOTROGA CEREALELLA LARVAE

Fathy, Marwa O.; El-Araby, Rania E.; Ahmed, Yousry M.

doi:10.21608/sinjas.2017.78785

TOXICOLOGICAL STUDIES ON SOME NATURAL PLANTS IN NORTH SINAI AGAINST SITOTROGA CEREALELLA LARVAE

Authors

¹ Arish Univ., Egypt.

² Dept. Environ. Protec., Fac. Environ. Agric. Sci., Arish Univ., Egypt.

³ Dept. Plant Protec., Fac. Agric, Suez Canal Univ., Ismailia, Egypt.

10.21608/sinjas.2017.78785

Abstract

Laboratory experiments were conducted under controlled conditions (28±2°C and RH. 65±5) to test the efficiency and toxicity of aqueous and organic extracts of nine natural plants collected from North Sinai (oleander, Nerium oleander L.; lemon, Citrus limon L.; rue, Peganum harmala L.; colocynth, Citrullus colocynthis; yarrow, Achillea santolina L.; artemisia, Artemisia monosperma L.; buckthorn, Anabasis articulata L.; camphor, Cinnamomum camphora L.; and tree tobacco, Nicotina glauca G.), against the 1^st –instar larvae of the Angoumois grain moth Sitotroga cerealella(olivier). The results showed that the aqueous extract of Citrus limon L. gave the highest toxicity with LC₅₀ (29× 10^-4ppm) and Achillea santolina L. gave the lowest value of LC₅₀(4033× 10^-4ppm). Methyl alcohol extract of C limon gave the highest value of LC₅₀(2×10^-4ppm) and A santolina gave the lowest value of LC₅₀(607× 10^-4ppm). The same trend was found in acetone extract of C limon where it gave the highest value of LC₅₀(35×10^-6ppm), while A articulata gave the lowest LC₅₀(4033× 10^-4ppm) against the tested insect.

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