الفهرس 
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Abstract
The present study was conducted at the experimental farm of Sakha Agricultural Research Station, Kafr El-Sheikh Governorate and in Motobes region, Kafr El-Sheikh Governorate, during the blooming period of citrus (Citrus spp.) and returned to experimental region during seasons, 2012/2013, to study the impact of wooden and foam langstroth hives on activity and productivity of honeybee colonies. 1 .The highest mean worker sealed brood areas were observed in colonies of Foam hives during May, while the lowest one was found in January in colonies of wooden hives. 2. No drone brood was found during September – January in colonies in all hives. 3. The highest mean number of incoming workers/colony/minute was observed in colonies of Foam hives during May and June, while the lowest number of incoming workers/colony/minute was found in November in colonies of wooden hives.4. The highest mean stored pollen areas were observed in colonies of Foam hives during May and June, while the lowest one was found in January in colonies of wooden hives.5.The largest area of constructed wax comb were found in colonies of Foam hives during May, while the lowest one was found in March in colonies of wooden hives. All colonies did not secret wax during the period from September to February.6. The highest amounts of honey yield (citrus, clover and cotton) were in foam hives than in wooden hives.7. The highest percentage of infestation was recorded in August, while the lowest percentage of infestation was recorded in August during May in colonies of wooden hives. Meanwhile, the mite not detected on unsealed drone brood in colonies of foam hives throughout the experimental period. 8. The importance of using Foam hives due to increasing brood area, Stored pollen and enable to saving energy of honeybee and hive production from wax and honey and protected them from Varro and this may be due to effect of polyestrien (principle component of foam hive) against Varro as repellent substance.