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العنوان
studies on the role of soil biofumigation as a management strategy for the control of vicia faba root rot caused by fusarium oxysporum /
المؤلف
galal, yasmen mohammed mohammed.
هيئة الاعداد
باحث / ياسمين محمد محمد جلال
مشرف / عبد الواحد فهيم مصطفي
مشرف / محسن السيد إبراهيم
مناقش / محمد أنور عبد الستار
مناقش / عمر عبد الرحمن عبد الواحد
الموضوع
biofumigation. crop diseases. chemical fumigation.
تاريخ النشر
2016.
عدد الصفحات
105, pages 9. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
علوم النبات
تاريخ الإجازة
10/11/2016
مكان الإجازة
جامعة بورسعيد - كلية العلوم ببورسعيد - النبات
الفهرس
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Abstract

Faba- bean is considered one of the most important food legumes in Egypt as well as worldwide due to its high nutritional vale as a food source for human and feed for livestock and poultry. Moreover, bean peel products and secondary resulting products known as bean straw are also used. The unique ability of maintaining soil fertility by fixing atmospheric nitrogen through the symbiosis with soil bacterium, rhizobium leguminosarum, is another advantage introduced by such strategic crop into the soil that ensuring sustainable agriculture.
A number of pathogens can infect faba bean influencing its efficiency of nitrogen fixation process and prominent constraint on the crop productivity. Fusarial-root-rot was shown to be not only the most common but also the most devastating root diseases of faba bean.
Soil characters
- The total nitrogen was highest (87.1 mg/kg soil) for CSM and lowest (11.6 mg/100g) for RGM.
- The soil sulphate attained its lowest (0.62 ml/100g) and highest (1.33ml/100g) values at control and CGM treatment, respectively.
- The measured cations exhibited relatively narrow ranges among the different treatments.
- The soil p H was slightly alkaline for all treatment and varied from 7.51 to 7.88.
Root rot incidence
By comparison with control, the results showed no suppressive effect was noticed on the root rot of faba bean plants.
Host growth
- As for growth development, the obtained data showed that there was no significant differences in the root-length within the same growth stage in all treatments.
- All soil treatment showed prominent increase in shoot height and number of branches upon comparison with the untreated soil.
- It was evident that the soils amended with CSM and RGM showed distinctly higher values compared to other treatments as well as non-treated control soil in the terms of root and shoot dry- weight.
Host yield
The yield attributes represented by dry weight of pods number of pod/plant length of pods and seed number/pod of almost all treatments showed greatly higher values compared with the control.
Soil fungal community
- During the survey of the soil mycoflora it was possible to identify 14 taxa of which 9 were isolated from the control soil while the reminder (5 taxa) from the amended soil.
- Only 2 genera Aspergillus and Fusarium revealed relatively wide range of species where Aspergillus was represented by 5 and fusarium by 2.
- In view of fungal density the genus Fusarium came first followed by Penicillium and Aspergillus.
- By comparison to control the increase in the fungal count in treated soil is not consistent for every species. For instance F. oxysporum showed the most significant difference on RGM while F solani on CSM.
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