author(s)
Muhammad Umar, Anjum Aqeel, Waheed Ul Hassan, Nawaz Haider Bashir, Ihsan Ullah, Talha Nazir and Abdul Hanan

abstract
Honey bees play a vital role in increasing production of many crops including oil seed crops through their foraging activity. Foraging activities starts early in the morning and ends in evening. These activities fluctuate throughout the day. Day timings have great impact on foraging activities and pollen collection. Pollen collection is recorded high in the afternoon session between 11.00 am to 1.00 pm. Forager bees prefer to collect different substances like pollen, nectar and water in these times. Apis mellifera species is mostly domesticated for honey production. The present study was investigated on the same species in the apiary of College of Agriculture, University of Sargodha. The experiment was conducted from November 2016 to March 2017. Number of entering and exiting forager bees in the hive were counted for 10 min/colony three times (morning, noon and evening) in a day from 8:00 am to 4:00 pm. Collected pollen were counted three times in a day on the same timings. Foraging activity were investigated on three linseed varieties (Chandani, Punjab and PR-24). Date were collected for two weeks and two days in a week. Experiment had three replications in RCBD design. Three varieties were sown on area of three canals. Three honey bee colonies were used in this experiment. Pollen collectors were used for the collection of pollens. Data were analysed and mean values were tested by using R software.