Archive
 
1.0
2021CiteScore
 
36th percentile
Powered by  Scopus
Volume 2, Issue 4      October-December, 2014

CRITICAL TEMPERATURE CHANGE AS IMPORTANT FACTOR OF CALLOSOBRUCHUS CHINENSIS L. MANAGEMENT IN CHICKPEA GRAINS
 
Farid Asif Shaheen*
Department of Entomology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi
 
ABSTRACT
Pulse beetle, Callosobruchus chinensis L., is a major pest of stored chickpea. To reduce infestation of chickpea grains by this pest, the impact of short temperature changes on various life cycle aspects of this pest on chickpea grains was studied. Shifts of temperatures, from the average storage temperature of 30oC, of plus or minus 5, 10 or 15 oC for either five or ten minutes each day for two days, was sufficient to affect the life cycle of the pest and reduce infestation. In general the larger the temperature shift and the longer the time at the shifted temperature, the greater was the effect. The treatment of 15oC for 10 minutes proved to be the most effective reducing the number of days to death from 19.77 to 4.97 days, the number of eggs laid per grain from 3.92 to 1.21 eggs, the number of F1 adults per test sample from 13.71 to 0.93 adults, the lifespan of F1 adults from 18.39 to 2.75 days, the number of holes per grain from 1.63 to 0.18 holes and the percent weight loss of grains from 29.61 to 8.69%. These data suggest that short, but significant, changes in temperature can adversely affect the physiology of this pest and provides a potential method for reducing product loss.
Keywords: Temperature, Callosobruchus chinensis, mortality, chickpea grains, weight loss
Download PDF

FacebookTwitterEmailWhatsApp
 
     
 
 
 
Asian Journal of Agriculture and Biology © 2017  
Asian Journal of Agriculture and Biology is licensed under a 
Creative Commons Attribution 3.0 License.