STUDIES REGARDING THE INFLUENCE OF CHEMICAL PESTICIDES IN COMBATING THE PESTS FROM THE SUN FLOWER FIELDS, UPON THE DECREES OF THE BEE FAMILIES IN THE YEARS 2006-2007 PUBLISHEDAlin Jivan, Silvia Pătruică, Gheorghe Popescu
The purpose of this study was to observe the quantity of younglings raised by the bee family studied in the blooming period of the sun flower culture , in the conditions in which the seed was treated with the imidacloprid pesticide (Gaucho 600g/l)and the BACTERIAL procloraz(Mirage 450g/l). In July 2006 and 2007, for 4 weeks 5 studied bee families where the aspect of their behavior during the sunflower springing and under the aspect of offspring deposits. As a witness, the gathered pollen from the acacia blooming was taken. During the sun flower culture blooming the maximum number of 1800mm2 surface covered with offspring was recorded, at the bee family nr.5. All the offspring frames where measured from all the studied hides and one could observe that the bee family where during 15 minutes more than 650 bees where observed coming into the hide with pollen and nectar loaded in the morning, the surface of frames covered with offspring was bigger than at the other hides the maximum value recorded was of 1800mm2 in the first week and at the bee family where less than 500 bees where counted entering the hide pollen and nectar loaded the surface covered with offspring was of maximum 1300mm2. The work is original through his methods of research, the counting of the bees and the measurements of the surfaces covered with younglings raised by the bee family in this period. This work is very important because through such researches it can be demonstrated if one product is toxic for the bees or not.
substance; bee. Younglings; measure; decrees