الفهرس Only 14 pages are availabe for public view
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Abstract
The obtained results from this investigation can be summerized as follows :
1-Two annual surveys of wheat powdery mildew incited by Blumeria graminis f sp tritici conducted in the northern governorates indicated that Kafr El-Sheikh, Gharbia , El-Behira and Damietta are hot spots to the diseases due to increased levels of humidity.
2-The obtained results indicated that Sakha 61 followed by Sakha 93 shoed high level of susceptibility. On the other hand Giza 168 and Gemmeiza 5 showed low level of susceptibility.
3-As regard to the bio-control the best treatment was recorded with Bacillus subtilies since it followed the fungicide treatment.
4-The obtained results also indicated that the highest chlorophyll content was recorded with cv Sakha 61 (%19.26) which was protected against the disease.
5- Fungicides proved their distinction for controlling powdery mildew out of six other systemic fungicides.