Effect of Formulated Petroleum oil solo and mixed with Hexamine as novel substituents of pesticides against black bean aphid Aphis fabae Scop. Infesting Vicia faba L. plants

Eskander,, M. A.; Hassan, Raghda M.

doi:10.21608/jppp.2025.409322.1364

Effect of Formulated Petroleum oil solo and mixed with Hexamine as novel substituents of pesticides against black bean aphid Aphis fabae Scop. Infesting Vicia faba L. plants

Document Type : Original Article

Authors

M. A. Eskander, ¹
Raghda M. Hassan ²

¹ 1Pesticides, Formulation Department, Central Agricultural Pesticide Laboratory (CAPL) Agricultural Research Center, 12618-Dokki-Giza, Egypt.

² Bioassay Department, Central Agricultural Pesticide Laboratory (CAPL) Agricultural Research Center, 12618-Dokki-Giza, Egypt.

10.21608/jppp.2025.409322.1364

Abstract

Oils are among the safest and most effective substitutes for synthetic insecticides, and they have been used as pesticides for centuries. Hexamine is an organic compound used in various industrial applications, included as precursor for synthesis of other chemicals like plastics and pharmaceuticals. The main goal of this research paper is formulating mineral oil with hexamine mixture in suitable formulations and measures their toxicity against aphis fabae as safety alternatives of chemical insecticides. Mineral oil formulated in emulsifiable concentrates (EC), hexamine as soluble powder (SP) and mineral oil with hexamine mixture as oil in water emulsion (EW), they all passed the designated examinations. Toxicity of prepared formulations determined in laboratory against nymphs, adults and winged stages of aphis fabae and the results obtained indicated that mineral oil with hexamine mixture (EW) displayed the greatest toxicity against all aphids stages after 72 hr. of treatment; however, nymph stage showed the most susceptible to tested formulations followed by adults and winged stages. The toxicity was increased gradually by the time after treatment and with the increasing of the concentration used. Results of greenhouse experiment showed clearly that the mixture of mineral oil with hexamine (EW) was the best formulation for control Aphis fabae infested faba bean plants and increased the efficacy more than ten days followed by hexamine(SP)and mineral oil(EC). On the other hand, mineral oil (EC) formulation showed excellent efficacy five days then decreased. Finally, mineral oil with hexamine formulation could be used in control of Aphis fabae infested faba bean.

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