The influence of pollen bees on the quantity of brood, honey and pollen at the time of flowering of (Sophora japonica)

Abstract

The research was conducted in order to determine the influence of pollen bees on the quantity of brood, honey and pollen at the time of flowering of Sophora japonica. The experiment was conducted on the apiary belonging to the Faculty of Agriculture of Belgrade in the period from 20 July to 10 August 1997/1999. The autochtonous bees breed Apis mellifera caraica Pollman was used in the experiment. The research established that the greatest inflow of pollen was recorded in the morning between 8 and 10 o'clock AM. The correlation between the number of pollen bees and the brood surface is strong; in the langstrooth hives bee colonies the correlation coefficient is 0.8127, while in the dadant blatt hive type bee colonies the coefficient is 0.8060. For the honey surface to be increased by 1 dm2 it takes 5.4 pollen bees more in the langstrooth hive, while it takes 10.52 bees less in the dadant blatt hive type to achieve the same goal.

U radu je ispitivan uticaj polenarica na količinu legla, meda i polena u vreme cvetanja Sophora japonica. Ogled je postavljen na pčelinjaku Poljoprivrednog fakulteta u Beogradu u periodu od 20.07.-10.08.1997/99. godine. U ogledu je korišćena autothona rasa pčela Apis mellifera carnica Pollman. U istraživanjima je utvrđeno da je najveći unos polena bio u jutarnjim časovima od 8 do 10 časova. Korelaciona zavisnost broja polenarica i površine legla je jaka i kod pčelinjih zajednica u langstrooth košnicama iznosi 0,8127, dok kod pčelinjih zajednica u dadant blatt tipu košnica iznosi 0,8060. Za povećanje površine meda od 1 dm2 kod langstrooth tipa košnica potrebno je 5,4 polenarica vise, dok je u dadant blatt tipu košnica bilo potrebno 10,52 polenarice manje.