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<p>Pulse beetle, <i>Callosobruchus maculatus</i> (Fabricius) is an important stored grain pest in pigeon pea responsible for significant grain yield losses. This pest has already developed a high resistance to commonly used pesticides like malathion and deltamethrin. For this reason, farmers are forced to use pesticides in higher dosages to manage the pest which is not good for the environment and human health. Consequently, alternate, effective and ecofriendly new formulations of pesticides are necessary to curb the pest menace. With this background, four nanoformulations viz., silver nanoparticles (33.38&#xa0;nm (nm)), <i>Acorus calamus</i> oil nanoemulsion (10.93&#xa0;nm), malathion nanoemulsion (69.25&#xa0;nm) and emamectin benzoate solid nanodispersion (69.69&#xa0;nm) were synthesized by using Response Surface Methodology in Center for Nanotechnology, University of Agricultural Sciences, Raichur. Further, the efficacy of the synthesized nanoformulations and their respective commercially available normal formulations was studied by seed treatment in the laboratory. Later, pre-harvest spraying was done with these nanoformulations to check their efficacy in carrying the pest from the field to godowns. The study concluded that the nanoformulations were more effective than their commercial counterparts. Among all, emamectin benzoate solid nanodispersion was highly effective in reducing seed damage in lab and field conditions and also reduced the pest's carryover effect. Thus the findings highlighted the importance of nanoformulations in ecofriendly and viable management of pulse beetle in pigeon pea.</p>

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Nanoinsecticides and nanobotanicals as seed protectants against pulse beetle, Callosobruchus maculatus (Fabricius)

  • 期刊论文

  • 发表日期：

    2025年4月8日

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  • Bharati Jambunatha Patil,
  • Pramod Katti,
  • Adoni Ginnu Sreenivas,
  • Sushila Nadagouda,
  • Sharanagouda Hiregoudar,
  • N. M. Shakunathala

摘要

Pulse beetle, Callosobruchus maculatus (Fabricius) is an important stored grain pest in pigeon pea responsible for significant grain yield losses. This pest has already developed a high resistance to commonly used pesticides like malathion and deltamethrin. For this reason, farmers are forced to use pesticides in higher dosages to manage the pest which is not good for the environment and human health. Consequently, alternate, effective and ecofriendly new formulations of pesticides are necessary to curb the pest menace. With this background, four nanoformulations viz., silver nanoparticles (33.38 nm (nm)), Acorus calamus oil nanoemulsion (10.93 nm), malathion nanoemulsion (69.25 nm) and emamectin benzoate solid nanodispersion (69.69 nm) were synthesized by using Response Surface Methodology in Center for Nanotechnology, University of Agricultural Sciences, Raichur. Further, the efficacy of the synthesized nanoformulations and their respective commercially available normal formulations was studied by seed treatment in the laboratory. Later, pre-harvest spraying was done with these nanoformulations to check their efficacy in carrying the pest from the field to godowns. The study concluded that the nanoformulations were more effective than their commercial counterparts. Among all, emamectin benzoate solid nanodispersion was highly effective in reducing seed damage in lab and field conditions and also reduced the pest's carryover effect. Thus the findings highlighted the importance of nanoformulations in ecofriendly and viable management of pulse beetle in pigeon pea.