Marwa Abdelateef Zyton <br/><br/>
Pathological studies on crown and stem rots of Egyptian clover /  
 دراسات مرضية على أعفان التاج والساق في البرسيم المصرى 
Marwa Abdelateef Zyton ; Supervised Effat Abdelmageed Zaher , Khairy Abdelmaksoud Abada  
 - Cairo :   Marwa Abdelateef Zyton ,   2014 
 - 116 P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Plant Pathology and Physiology 
<br/><br/> Isolation trials from the rotted crowns and stems of Egyptian clover plants  were carried out. The isolated fungi were purified and identified as Alternaria spp.,  Fusarium spp., F.solani, Macrophomina phaseolina, Pythium spp., Rhizoctonia solani,  Sclerotinia sclerotiorum, S.trifoliorum, Trichoderma album, T.harzianum and T.viride.  No apparent infection by crown and stem rot diseases was observed on clover plants  during October, November and May then the infection began to appear from December  to April of the next year. The highest infection by crown rot occures during January and  by stem rot during February. Pathogenicity test by soil infestation and stem inoculation  revealed that all the tested fungi were able to infect clover plants except Trichoderma  spp. S. sclerotiorum infected all the plants that belong to family Fabaceae, i.e. alfaalfa,  bean, chick pea, Egyptian clover, faba bean, etcas well as lettuce, safflower  cantaloupe, cucumber, and potato and failed to infect barley and wheat 
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<br/><br/><label>Subjects--Index Terms: </label>Crown and stem rots   Disease management Egyptian clover