Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userThe Effect of Vesicular - Arbuscular Mycorrhiza Isolated from Syrian soil on Alfalfa Growth And Nitrogen Fixation in saline soil
دراسة تأثير الميكوريزا الحويصلية الشجيرية المعزولة من التربة السورية في نباتات الفصة المزروعة في تربة مالحة وفي التثبيت الحيوي للنتروجين
638
0 21
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2000
fields
Biology
and research's language is
العربية
Authors
فائزة الأطرش( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
تبين أن للميكوريزا الحويصلية الشجيرية Vesicular- arbuscular Mycorrhiza فعالية إيجابية في التثبيت الحيوي للنتروجين و أن التأثيرات الإيجابية لVAM في نباتات الفصة النامية في الترب المالحة على جانب كبير من الأهمية . يهدف هذا البحث إلى دراسة تأثير الميكوريزا في محصول نباتات الفصةMedicago sativa L. و في تشكل العقد الجذرية Nodulation و في التثبيت الحيوي للنتروجين – Biological Nitrogen Fixation - (BNF) مقدرًا باستخدام تقانة النظير النتروجيني N ١٥ في أوساط مختلفة من الملوحة و علاقة هذا التأثير مع تأثير التغذية الفوسفاتية.
The influence of vesicular - arbuscular Mycorrhiza fungi (VAM) on symbiotic fixation of N٢ in alfalfa plants has been observed. Beneficial effects of VAM plants in saline soil are of great interest. The aim of this work was to study the effect of VAM or phosphorous fertilization on alfalfa (Medicago sativa L.) yields, number of nodules and N٢ fixation by N١٥ isotope dilution at different salinity levels.
References used
Baker, A.; Sprent, J.I. and Wilson, J. ١٩٩٥. Effects of sodium chloride and mycorrhizal infection of the growth and nitrogen fixation on Prosopis juliflora
Barea, J. M.; Azcon-Aguilar, C. ١٩٨٢. Production of plant growth substances by the vesicular arbuscular mycorrhizal fungus glomus mossea Appl. Environ
Barea, J. M.; Azcon–Aguilar, C. and Azcon, R. ١٩٨٧. Vesicular arbuscular mycorrhiza improve both symbiotic N٢ - fixation and N uptake from soil as assessed with a N technique under field conditions
rate research
Read More
A pots experiment was carried out using two soil types (clay loam and sand
soil) to study the interaction between VA-mycorrhizal (My) and some soil fungi
under the effect of rock phosphat on growth of onion plant.
The interaction between mycorrhiz
al (My) and other soil fungi increased
the fresh weight of root in comparison with mycorrhizal (My) alone, however
the differences were not significant except for (Saccharomyces+Mycorrhiza)
(Sac+My) similar results were obtained in sandy loam soil.
The percentage of root colonization on the growth of onion plant was not
effected by the interaction between mycorrhiza (My) and other osil fungi
(Actinomucor, Aspergillus, Penicillium, Saccharomyces) (Act, Asp, P, Sac). This
value, however was high in the second harvest in treatment mycorrhiza (My)
and (My+Sac) (My+Act) The VAM- fungus alone and their interaction with
other soil fungi increased the plant growth.
Cultivars of Medicago Sativa l.var local were planted in three locations, ten
pots per location. The first location wich is the most polluted one is (Bab
Toma), second polluted one is (Jeser Victoria), and the reference location is
(Daria), in the
west of Damascus.
Temperature, relative humidity and concentrations of main pollutants in
that three locations were measured.
Resultes showed that air pollution decreased growth of plants, amount of
chlorophyll, production of plants, number of flowers, number of pods and leaf
area in comparison with reference location.
With the widespread of oil facilities, distribution centers of oil and oil tanks, it has become a must in this article to study the impact of these materials on the physical and mechanical properties of soils, especially at coast to avoid distortions
and changes in the properties of these soils.
We tried in this research to study Clay coastal soil. Two main samples were studied: one polluted with materials leaked from these sites and the other was not. The samples were taken from both types and transported to the laboratories of the Faculty of Civil Engineering at the University in October. In the laboratory, we conducted experiments and evaluated their results.
Effect of organic and bio fertilizers (Azotobacter and phosphate solubilizing
bacteria) on production of potatoes and some soil properties was studied in
Tartous.
The experiment consisted of 4 treatments (control soil, soil+manure, soil+
bioferti
lizer and soil+manure+biofertilizer) each replicated four time, for 2004
and 2005 seasons.
Total N, available P, available K, and organic matter in soil were
determined.
Significant increases were observed in most of the inoculated and organic
fertilized treatments compared with the control. However, the treatment
(soil+manure+biofertilizer) was the best and showed significant increases in
potato yield compared with other treatments especially in the next season.
However, the second season was better in yield increase in all treatments
than the first seacon.
The experiment was carried out in Tartous Governorate in the Qubeiba region in the two agricultural seasons 2011 and 2012 to study the effect of different types of ploughs, the depth of plowing, and the timing of adding nitrogen fertilizer on some ph
ysical and chemical properties of the soil and some growth indicators of peanuts and its productivity. Three types of plows were used: MP ), disc plow ( DP ) and backhoe plow ( CP ) .
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
