POTENTIAL OF PIPER CHABA FOR THE MANAGEMENT OF THE STORED-PRODUCT PEST (CALLOSOBRUCHUS CHINENSIS)

POTENTIAL OF PIPER CHABA FOR THE MANAGEMENT OF THE STORED-PRODUCT PEST


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Authors

  • ABHISHEK MUKHERJEE
  • ROHAN DAS
  • DEBOJOTI CHAKRABORTY

https://doi.org/10.58537/jorangrau.2026.54.2.01

Keywords:

Callosobruchus chinensis, I-tube, Piper chaba, Piperine, Repellency, Stored grain pest, Sustainable pest management

Abstract

The present study investigated the insect-repellent potential of Piper chaba (Piperaceae)
stem in multiple formulations-dry powder, fume and water extract-against the pulse beetle
Callosobruchus chinensis (Coleoptera: Bruchidae), a major pest of stored grains. With the
increasing concern over pesticide resistance, toxicity to non-target organisms and residue hazards
associated with synthetic insecticides, this research emphasises plant-based alternatives for
sustainable pest management. Bioassays were conducted in I-tube (wind tunnel) to evaluate
repellency using various concentrations of each formulation, and the results were statistically
analysed using chi-square tests and regression analysis. The dry powder of P. chabastem showed
a clear dose-dependent repellent response, with 1.75 g dry powder yielding 96.66% repellency
( ² = 29.36, p < 0.001). Similarly, the fume exhibited full repellency at higher release rates (2–4
ml/min) compared to 60% at 0.5 ml/min ( ² = 88.71, p < 0.001). Water extracts followed the same
trend, with 100% extract achieving complete repellency and diluted forms showing reduced
effectiveness ( ² = 66.25, p < 0.001). Phytochemical screening confirmed the presence of
alkaloids, flavonoids, terpenoids, and phenols compounds previously associated with insecticidal
activity. Infrared spectroscopy (IR) further validated the presence of functional groups such as
O–H, C–H, and C=O, indicative of bioactive molecules. The findings establish P. chaba as a
potent natural repellent with formulation-specific and concentration-dependent efficacy. Notably,
the fume exhibits the highest repellency and richest phytochemical profile. This highlights P.
chaba’s promise in eco-friendly pest control strategies, although further research is needed to
assess toxicity on non-target species, residue safety, and field-level applicability.

 

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Submitted

10-07-2026

Published

11-07-2026

How to Cite

ABHISHEK MUKHERJEE, ROHAN DAS, & DEBOJOTI CHAKRABORTY. (2026). POTENTIAL OF PIPER CHABA FOR THE MANAGEMENT OF THE STORED-PRODUCT PEST (CALLOSOBRUCHUS CHINENSIS): POTENTIAL OF PIPER CHABA FOR THE MANAGEMENT OF THE STORED-PRODUCT PEST. The Journal of Research ANGRAU, 54(2), 1-9. https://doi.org/10.58537/jorangrau.2026.54.2.01