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Fumigant action of some essential oils against stored grain insect pests

KrishiKosh

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Title Fumigant action of some essential oils against stored grain insect pests
 
Creator Geetanjaly
 
Contributor Tiwari, S.N.
 
Subject fumigants, essential oils, fumigation, stored products, food grains, insect pests, biological control, storage quality
 
Description Thesis-PhD
Experiments were conducted in the Post-Harvest Entomology Laboratory of Department of Entomology, G. B. Pant University of Agriculture & Technology, Pantnagar, to test the fumigant toxicity of eighteen essential oils against stored grain insect pests namely Sitophilus oryzae, Rhyzopertha dominica, Tribolium castaneum,Sitotroga cerealella and Callosobruchus chinensis. Most of the essential oils suppressed the feeding and breeding of test insects. Seven highly effective and edible plant oils were selected and their combinations were made to study their effect on insect mortality and long term bio-efficacy. Lethal concentration (μl/l) was calculated for each seven essential oils at 850.0, 425.0, 212.50, 106.30 and 53.10 μl/l, result showed that adults of R. dominica and C. chinensis were most susceptible to fumigant action than S. oryzae and T. castaneum; However these were found susceptible only at higher concentrations. Bio-efficacy of essential oils was dependent on dose and exposure period.
Study revealed that composition of essential oil may vary with change in season. GC-MS analysis identified that all seven oils contained monoterpenes as a major component followed by sesquiterpenes. No marked difference was observed in the organolaptic property of treated and untreated cooked rice, evaluated on different characteristics e.g. color, flavor, texture, taste, appearance and overall acceptability.
 
Date 2016-07-22T14:48:28Z
2016-07-22T14:48:28Z
2015-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69355
 
Language en
 
Format application/pdf
 
Publisher G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)