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Register a new userThe effect of certain fungicides on mycoflora in the bean plant rhizosphere
تأثير بعض مبيدات الفطور في الفلورا الفطرية في منطقة الريزوسفير لنبات الفول
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Damascus University ورقة بحثية
Publication date
2005
fields
Plant Protecion
and research's language is
العربية
Authors
زكريا الناصر( باحث )
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Shamra Editor
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يهدف البحث إلى دراسة تأثير تطبيق المبيدات الفطرية (كربندازيم، بينوميل، ثيرام و تولكلوفوس- ميثيل) في التربة بالتركيز الموصى به لكل مبيد و التركيز المضاعف في التجمعات الفطرية الموجودة في منطقة الريزوسفير لجذور نباتات الفول. وجد من النتائج أن المبيدات أدت إلى تخفيض معنوي للتجمعات الفطرية في منطقة الريزوسفير لجذور نباتات الفول سواء عند التطبيق بالتركيز الموصى به أو عند التطبيق بالتركيز المضاعف مقارنة مع الشاهد و هذا التخفيض استمر فترة أسبوعين تقريبًا بعد المعاملة بالتركيز الموصى به، و حتى ثلاثة أسابيع عند تطبيق التركيز المضاعف مقارنة مع الشاهد.
This study was carried out to determine the effect of fungicides application (carbendazim, benomyl, thiram and tolclofos-methyl) on soil when used at the recommended rates and at duplicated rates on the fungi population in the bean plant rhizosphere. Results showed that tested fungicides caused significant reduction in the fungi population of rhizosphere bean plant when used at the both levels compared with control. The tested fungicides caused various inhibitory effects according to the application rate. However, the duplicated rate caused remarkable reduction in fungi population. This reduction continued 2 or 3 weeks when applied fungicides used at recommended or duplicated rates respectively.
References used
Barnett, H. L. and Hunter. B. B. 1987. Illustrated Genera of Imperfect Fungi. Fourth Edition. New York
Beck, B. D., Calabrese E. J. and P. D. 1989. The use of toxicology in the regulatory process, in Principles and Method-s of Toxicology, Hayes, A. W., Ed., Raven Press, New York, . Cahp.1
Booth, C. 1971. The genus Fusarium. Commonwealth Mycological Institute, Kew, Surrey, England, 237
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This research was carried out through 2015-2016 growing season
belongs to the fourth stability at Gander village located on the
between Homs and Damascus .The aims of this research were to
study the effect of plant density on seed yield and its components
of faba bean (vica faba ) and to investigate the optimum plant
density of this crop in the region.
This research was carried out through 2015-2016 growing season
belongs to the fourth stability at Gander village located on the
between Homs and Damascus .The aims of this research were to
study the effect of plant density on seed yield and its components
of faba bean (vica faba ) and to investigate the optimum plant
density of this crop in the region.
To know the effect of some fungicides on peacock eye disease has beentested five
fungicides from different chemical groups, using concentrations advisable to field
application,on the 45 year old olive trees in the Baksa village Lattakia . The resul
ts
showed an increase in incidence of the control of 22.4 to 45.5 % after 45 days, versus low
incidence rates in the fungicides tested treatments . The best two fungicides were
thiophanate –methyl with infection decreasing from 19.2 to 10.3% and chlorothalonil from
24.3% to 16.5% . The severity also decreased in the treatment of the fungicide thiophanate
–methyl from 9.7 to 4.1 % and chlorothalonil from 13.7 to 8.9 % while the severity of the
infection of the control increased from 10.5 to 25.6 % .In order to efficiency the fungicide
thiophanate – methyl was more effective reducing the infection severity compared with the
control with 82.8 %, followed by chlorothalonil , kresoxsim methyl , and mancozeb with
73.3 , 72.0 , 71.9% respectively whereas the fungicide copper oxychloride was the least
effective with 68.1%.
The research was Carried out in Jisr area in the province of Idlib during the growing
season 2013 - 2014 to study the effect of planting dates in autumn sowing 28/9/2013 = (1),
8/10/2013 = (2), 18/10/2013 = (3) and spring sowing 18/3/2014 = (1), 28
/3/2014 = (2),
8/4/2014 = (3) on yield and growth parameters.
The results showed that the autumn sowing has a significant increase in growth
parameters compared to spring sowing: adapting coefficient (76.67-82.28%), Plant hight
(67.15 - 56.3 cm), number of branches/plant (11.63 - 6.84), number of head/Plant (21.39 -
17.76), oil content (23.19 - 20.68)%, yield petals (96.12 - 60.57) kg/ha, seed yield (1331.82
- 768.31) kg/ha, oil yields (315.15 - 158.99) kg/ha to autumn and spring, respectively.
While maturity date of autumn plants was delayed compared to spring (245.33 - 145.33)
Day.
When sowing was of autumn, growth parameters of third soing date were a
significantly higher compared to both the second and first sowing: number of branches /
plant, number of heads / plant, number of seeds / head, oil ratio (%), oil yield (kg/ha),
yields seeds ( kg/ha), petals yield (kg/ha). Wheras the first sowing date has delayed
maturity date compared of both the second and third sowing dates.
When sowing was in spring, growth parameters of the first sowing dates were a
significantly higher compared to both the second and third except for days to maturity.
This field study was carried out at EL- Gab Research Center during furing
2000-2001. Six fungicides namely, Benomyl 50%, Difenoconazole, Diniconazole,
Fludioxonile, Triticonazole and Thiram 37.5% + Carboxin 37.5% with high
doses×1, ×2, ×4, ×8 were
used as seed dressings on chickpea cultivar Gab3 to
study their effects on Ascochyta blight infection.
The results showed that fungicides eradicated the infection from the seeds
and protected the seedlings from infection. There was a clear effect on delaying
the infection by ascochyta blight on chickpea for about 10-15 days in
comparison with the untreated control. However, Higher doses of some
fungicides negatively affected the yield.
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