The experiment was conducted at the research farm of Sher-e-Bangla Agricultural University. Dhaka-1207 during the period from November 2016 to February 2017. The experiment consisted of three different ways of insect visitors foraging for pollination of mustard flowers viz. T1= Open field (Control). https://www.roneverhart.com/Mesa-Boogie-Rectifier-4x12-Cabinet-Standard-Straight-p31703/