الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 95 |  |  |
| | | from | 95 | | |
Abstract
The present hvestigation was planned to study the chemical and biological control of the following phytopathogenic bacteria:- Awobacterium tumef aciens , the causal agent of crown-gall disease, Erwinia atroseptica , the causal agent of po tat0 black-leg disease ,E. - carotovora the causal agent of softrot disease ; Streptomyces scabies, the causd agent of potato sommon-scab disease.