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Experiments on hogplum beetle,  Podontia 14-punctata  were carried out to find out the suitable insecticide(s) with appropriate dose(s) for suppressing both larvae and adults. Results revealed that the highest mortality (100%) was found in 1 st  instar larvae after 24 hours at each dose of superior 505EC and the lowest mortality was in T 4  treated leaves. The highest mortality was also found in 2 nd , 3 rd , 4 th  and adult stages of hog-plum beetle by T 5  and T 6  treatments. No mortality was observed in control treatment in laboratory trial. The mean number of larvae ranged from 1.5 to 7.6 per square meter of quadrate at one week after last spray. No significant difference was observed among treatments regarding percent leaf infestation at one day before 1 st  spray. The percent leaf infestation ranged from 5.01 to 9.82 at one week after last spray. The lowest percent (5.87%) leaf infestation was found in T6 treated plants while the highest percent (15.76%) leaf infestation was found in untreated control plants. The highest mortality was observed in T 5  and T 6  treated plants at all larval instars and no significant difference was found between two doses of each insecticide under field condition. The results of field trial also revealed that the minimum dose (0.75 ml L -1  of water) of Superior 505 EC is sufficient to suppress the field population of larvae and adults of  Podontia 14-punctata  effectively. Finally, it may be concluded that the highest mortality was found in all larval instars and adult stage of hog-plum beetle after 24 hours at each dose of superior 505 EC (T 5  and T 6  treatments) both in laboratory and field trials.  J. Environ. Sci. u0026 Natural Resources, 8(1): 79-83 2015

Effects of Insecticides for Controlling Hogplum Beetle Podontia 14-punctata under Laboratory and Field Conditions