Insecticidal and Repellant Activities of Sugar Apple Leave Extract against Stored Grain Pest , Tribolium Castaneum ( Herbst , 1797 ) ( Coleoptera : Tenebrionidae )

Content Provider	Semantic Scholar
Author	Mar, Khin Myint
Copyright Year	2019
Abstract	This study was conducted to test the insecticidal and repellant activities of sugar apple leave extract against stored grain pest Tribolium castaneum (Herbst) during December 2018 to March 2019. The objectives of the study were to test the repellency of sugar apple extract against red flour beetle and to observe the mortality of beetle under the laboratory condition. 50g of dried leaves powder of sugar apple was soaked in the one liter of pure water for 24h at room temperature to obtain 5 percent concentration. In this experiment, the activity of 48.72 % when observed at the end of 24 h treatment, decreased to about 40.54% and 41.18 % respectively at the end of 48 h and 96 treatment. The extract of sugar apple leaves showed the highest level of repellant activity at the end of 72 h treatment. After 96 h of treatment, percentage of repellency was decreased about 41.18 %. Overall average of the repellency of sugar apple leave extract on Tribolium castaneum was 51.72 % and therefore Aqueous extract of sugar apple leaves belong to the repellency class III. The percentage of mortality was the highest (15%) after 96 h of treatment while the lowest after 24 h of treatment. The data pertaining in the experiment showed that higher the exposure time was higher the percent mortality. It was suggested that the extract showed effective repellency on strored grain pest red flour beetle and the results will be contributed to Integrated Pest Management programme and their structural elucidations are underway.
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Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article