EFFECTIVENESS OF SPRAYING TIME FOR JUDICIAL USE OF INSECTICIDES IN CONTROLLING OF FRUIT FLY

M A Rahaman, M Jahan, K S Islam and S N Alam
Journal of the Sylhet Agricultural University, Volume 3, Issue 1, 2016, Pages 37-40

Abstract:

A study on effectiveness of spraying time for judicial use of insecticides in controlling of fruit fly was conducted in farmers’ filed during March to May, 2011 in Bogra district. The insecticide Nitro-505EC was selected as test insecticide and bitter gourd was as test crop for this experiment. The insecticide was sprayed three times as treatments viz. spraying early in the morning (7:00am to 8:00am), spraying at noon (12:00 noon to 1:00pm) and spraying before evening (4:00pm to 5:00pm) and was compared with the untreated control. The lowest infestation (26.80 %) by cucurbit fruit fly was found after spraying of insecticide in the afternoon (4:00pm to 5:00pm) and the maximum fruit infestation was found in the untreated control treatment (60.24%). Significant differences were found in percent of infested fruits immediate after three days, but after seven days there was no significant differences among the treatments.

Keywords:

Bactrocera cucurbitae, insecticide spraying time, fruit fly, infestation, bitter gourd


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M A Rahaman, M Jahan, K S Islam and S N Alam. 2016. EFFECTIVENESS OF SPRAYING TIME FOR JUDICIAL USE OF INSECTICIDES IN CONTROLLING OF FRUIT FLY, Journal of the Sylhet Agricultural University 3(1): 37-40.