The variations exist in acceptance percentage of grafted larvae, emergence percentage and weight of virgin queens according to different grafted bar level and queen cells position of local carniolan race (Apis mellifera carnica) in Manzala region were investigated. No significant differences were found in the acceptance percentage, emergence percentage and weight of virgin queen for the three bar levels. However, the acceptance percentage was positively affected by minimum temperature for the top bar. The weight of virgin queens was positively affected by the change in minimum temperature on all bar levels. On the other hand, the tested parameters were significantly increased on the middle position of bar than on the edge. In spite of the percentages of acceptance and queen emergence were positively affected by the ambient temperatures elements they were more pronounced factors on the weight of emerged queens on the edge position.

This study was carried out on honey extractor with eight moving baskets to evaluate three methods for modification of this extractor (The most prevalent in Egypt) to radial extractor as following:-The first method, (1) Possibility to temporary modify of honey extractor with moving baskets to radial extractor, with retaining all components and parts of this extractor, by fixing the moving basket in the direction of the extractor radius by iron wire is n-shaped. So the honey are extracted from both sides of the honeycomb once at the same time. (2) The honeycomb head should be placed beside the moving axis of the basket, so do not break the combs. The second method, modify of the extractor with moving baskets to radial extractor is easy to jaw and installation and have twice the number of baskets, by making three circles of iron for fixed the baskets in the direction of the extractor radius, (1) With the present number of 8 baskets only, will save more than twice the time. (2) With the number twice of 16 baskets, it provides four times for the extractor with moving baskets. The third method, the modification to radial extractor without baskets, by making three circles of iron for fixed the combs (16 combs) in the direction of the extractor radius.The results showed that, the first method is a simple and inexpensive, honey combs don't broken and providing twice the time, the honeycomb head should be placed beside the moving axis of the basket, so do not break the combs while the second method which is easy to jaw and installation and have double number of baskets. The third method, the extractor is very light, it provides four times comparing with the extractor have moving baskets, and all combs were intact and unbroken.

In the current study, The variations exist in acceptance percentage of grafted larvae, emergence percentage and weight of virgin queens were investigated in queenless rearing colonies of local carniolan race (Apis mellifera carnica) with different worker populations in Manzala region as isolated area. The accepted percentage of grafted larvae in different worker populations was varying from 52.4 to 100.0% and the variations were significant by different between higher and lower worker population. The higher value of accepted percentage showed in May, 14, 2016, while the lower value appeared in February,16, 2016. The variation in the emerged percentage between lower and higher worker population was also significant. The emerged percentage of virgin queens varying from 84.1 to 100%. The mean weight of virgin queens was 159.63 and 160.58 mg. for lower and higher worker population, respectively with no significant difference between them. The minimum, maximum and mean temperatures had a significant and positive effect on the studied parameters when the rearing occurred in colonies with lower worker. It could be concluded that the preparing queen rearing colonies with worker populations equal 1.5 kilogram or more is very satisfactory in producing good queens.

This study was carried out to evaluate the following aims : 1-What honeybee workers do to queen cells ready to successful caging, comparison between caging queen cells inside the normal cage and queen-excluder-cage, after sealing directly, in the colony. 2-Evaluation of the best day for caging inside the normal cage after queen cells sealing directly. 3-Patterning which honeybee workers do to wax layer removal of queen cells from on queen emergence slot and evaluation this in the incubator by comparison between incubation in the colony and incubator with handling removal of this new way. The results showed that caging inside queen-excluder-cage was better than the caging inside the normal cage, after queen cells sealing directly, in the colony. Also, the results appeared that the best day for the caging was after four days from sealing of queen cells. The experiments clearing that the honeybee workers removed wax layer of queen cell from on queen emergence slot with 6-9 mm circular. Using handling method in removing this layer on the queen cells inside incubator, after sealing directly, gave the same. Thereby the colonies could be used for queen rearing cells only. This way gave two batch instead of one batch in the same time, the production become duple comparing with all normal ways.