الفهرس Only 14 pages are availabe for public view
 |  | from | 97 |  |  |
| | | from | 97 | | |
Abstract
Leafcutting bees are considered to be an important pollinator of alfalfa.
Artificial nests were prepared for leafcutting bees Megachile spp renesting, by using
new foam model contain paper tubes of 5. mm. diameter. These empty nests were
transferred to the natural nest sites on the mud walls in El-Tal Elkebeer and El
Kasasin as a tarp for attracting bees. Then artificial nests were collected and
transferred to the alfalfa experimental field to study their interaction with alfalfa seed
production. Results showed that seed production of plants were higher in plants near
the shelters than in plants far from shelters. Some fertilization treatments were carried
out to study their impacts on the seed production but there is no significant
differences were found between all treatments. The maximum bee activity through
the day was observed, it was at 1pm, while before and after that time the activity
decrease (zero activity was at sunrise and sunset).