author(s)
Vaishali P Sawant, Shyamkant S Munje and Yugal K Yadu

abstract
The experiment was designed to study the toxic effect of locally available volatile eucalyptus oil, Eucalyptus globulus (5, 10 and 15 per cent) alone and in combination with phosphine gas (4 ppm) against pulse beetle, Callosobruchus chinensis L. The research work was carried out during 2017- 2018 at the Regional Research Centre, Amravati (M.S.). Observations on per cent mortality were recorded at 20 minutes and 24 hours after exposure to the treatment. It was observed that per cent mortality increased with increase in concentration of volatile oil and exposure period. 20 minutes after exposure to treatment, no mortality was observed in eucalyptus oil having 5 per cent concentration but mortality increased up to 30.00 per cent after 24 hours of exposure in this treatment. 83.33 per cent adult mortality was observed in the treatment, eucalyptus oil 15 per cent + phosphine 4 ppm at 24 hours of exposure.