الفهرس 
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Abstract
The present study was carried out at four locations of Minia governorate. Trails of the study were conducted through two successive years ( September 2009 to August 20 11).
- Experimental Bees:
One hundred eleven hybrid Carnioilan honeybees (Apis melfijera carnica) colonies having an approximately equal strength were selected for this study. The experimental bee colonies were housed in Langstroth hives and received normal feeding program over the period of study. Simple trap (wooden barrier) was placed on the hive entrance of each experimental bee colony to prevent the \\’orkers to throw out the dead larvae outside the hive which helped in counting number of mummies of fungal diseases (chalkbrood and stone brood).
Record timing of appearance and follow up the infection of fungal diseases and its relation to temperature and relative humidity over the year:-
The tested honeybee colonies were inspected at 12 day intervals over the years to record percentages of infection of the two fungal diseases.
In first season 2009/20 I 0 results showed that the highest infection percentage was recorded in 20 April (7.25%) for chalkbrood disease and (4.51%) for stone brood disease which associated with average temperature 32.4 °C and 69.6% relative humidity. While the lowest infection was in minimum level over long period extended between half of December to last of March (0.0 - 0.66%) and between first of January
to last of March (0.0 - 0.005%) for stone brood disease. The prevailing temperature 16.2-25.7 °C and 67.7-68.8% for the period of recording relative humidity stone brood and average temperature 18.3-25.8 °C and 77.1-65.9% relative humidity for chalkbrood.
However, in the second season 20 I 0/20 11, results showed that the
highest infection (7.19%) was observed in April month for chalkbrood disease and (4.29%) for stone brood disease with mean temperature 31.9°C and 70.3% relative humidity. Also, chalkbrood and stone brood infection was in minimum level over long period extended between half of December to last of March (0.0 - 0.75%) and (0.0-0.005%), respectively. where temperature degrees ranged between 18.7 to 25.1 °C and relative humidity 76.4 to 67.3%.