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Register a new userStudy of the effect of different concentrations of sodium salts (chloride - sulphate) on the stability of artificial soil aggregates at the Kaskais Research Center (Aleppo Governorate).
دراسة تأثير تراكيز مختلفة من أملاح الصوديوم (كلوريد - كبريتات) في ثباتية مجمعات التربة الصنعية في مركز أبحاث كصكيص (محافظة حلب).
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Authors
يوسف وليد الخلف( باحث )
Created by
د. يوسف الخلف
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نفذت تجربة مخبرية في مخبر معادن الطين والغرويات في قسم علوم التربة واستصلاح الأراضي في كلية الهندسة الزراعية- جامعة حلب. يهدف البحث إلى معرفة تأثير نوعان من الأملاح (NaCl – Na2SO4) بخمس تراكيز لكل ملح من الأملاح المدروسة في التجربة المخبرية في ثباتية مجمعات التربة الصنعية ومعرفة التراكيز الملحية التي تسبب الضرر الأكبر في تهديم مجمعات التربة الصنعية. أشارت النتائج إلى تأثير التركيز المتزايد للأملاح في زيادة نسب المجمعات التي تعرضت للتهدم، كما أشارت الدراسة إلى تضرر مجمعات التربة بشكل أكبر بفعل ملح كلوريد الصوديوم مقارنة مع ملح كبريتات الصوديوم. كما أشارت النتائج إلى أن ملح كلوريد الصوديوم يساهم بتخريب مجمعات التربة وخاصةً عند تركيز 10 g.𝓁-1 حيث بلغت النسبة المئوية للمجمعات المخربة نحو 35%. كما ساهم ملح كبريتات الصوديوم في تخريب مجمعات التربة وبلغت أعلى قيمة للنسبة المئوية للمجمعات المخربة (25.1%) عند تركيز 8 g.𝓁-1.
A laboratory experiment was carried out in the Clay Minerals and Colloids Laboratory in the Department of Soil Sciences and Land Reclamation at the Faculty of Agricultural Engineering - University of Aleppo. The research aims to know the effect of two types of salts (NaCl - Na2SO4) with five concentrations of each of the salts studied in the laboratory experiment on the stability of artificial soil aggregates and to know the salt concentrations that cause the greatest damage in the destruction of artificial soil aggregates. The results indicated the effect of the increased concentration of salts in increasing the percentage of aggregates that were subjected to collapse. The study also indicated that soil aggregates were damaged more by sodium chloride salt compared to sodium sulfate salt. The results indicated that sodium chloride salt contributes to the destruction of soil aggregates, especially at a concentration of 10 g.𝓁-1, where the percentage of destroyed aggregates reached about 35%. Sodium sulfate salt also contributed to the destruction of soil aggregates, and the highest value for the percentage of destroyed aggregates was (25.1%) at a concentration of 8 g.𝓁-1.
References used
21- Yadav,R.K.;S.P.Singh;D.Lai and A.Kumar(2007). Fodder production and soil health with conjunctive use of saline and good quality water in ustipsamments of a semiarid region. Land Degrad. Devt., 18 (2): 153-161.
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Research (GCSAR), Syria to study the effect of different concentrations of
sodium chloride on the multiplicati
on and rooting stages. The results showed
that the highest average of survival plants (98%), the number of new buds
(8.43) and plant length (8.58 cm) were obtained in the control treatment after 4
weeks from multiplication stage. The treatment with 50 mM of sodium chloride
led to reduce the multiplication rates with significant differences, while the
lowest plant multiplication had occurred with 100 mM of sodium chloride and
no survival plants were remained by the treatment with 150 mM of sodium
chloride during multiplication stage. The highest rooting rates (% 85.30), the
number of roots (4.67) and root length (6.28 cm) were also obtained in the
control treatment after 4 weeks from rooting stage. The treatment with 50 mM
of sodium chloride led to reduce the rooting process with significant
differences. The lowest rooting results were observed with 100 mM of sodium
chloride and no rooting rate was observed when plants were treated with 150
mM of sodium chloride.
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adding four different levels of phosphogypsum as much as (0.00,
6.72, 13.44, 20.16)ton / hectare (three replicates for eac
h treatment)
on bulk density and structure stability for clay soil has taken from
(Kattina).
The results showed improvement in the stability of the structure of
soil specially (0.25-1)mm, increasing in aggregation degree ,
increasing of the rate of total porosity ,air filled porosity in
comparison to the control at the two levels(13.44, 20.16)ton/hectare
and also by increasing the added level . Whereas the dispersion
ratio , and Bulk density were decreased when increasing the level
of phosphogypsum at the same two levels.
The main achieved results in this study showed , a significant
increase in aggregation degree in the soil when increasing the ratio
of the added phosphogypsum at the levels( 6.72, 13.44, 20.16) in
comparasion with control .
In other way the dispersion ratio was decreased and had negative
relationship when increasing the level of the added
phosphogypsum in comparasion with control .
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adding different concentrations of fennel (Foeniculum vulgare), 0.5, 1.0 and 1.5% on
the physiochemical and quality characteristics of the sponge cake stored for (0, 5
, 10
and 15) days. The results of the chemical composition of the flour used in the sponge
cake mix showed that the percentages of protein and fat were 10.3 and 0.8%
respectively, while the ash and carbohydrate levels were 0.65 and 76.75% respectively,
the moisture percentage was 11.5%. The results of the sensory evaluation showed that
the cake treated with 1% of fennel powder had good colour, texture and appearance in
comparison with the other treatments, while the cake treated with 1.5% of fennel
showed better flavour among other treatments. The results of the physical tests showed
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powder, while the specific size decreased compared to the standard sponge cake. The
values of peroxide and the acidity of the sponge cake stored at room temperature for 15
days were decreased with the increase of the percentage of fennel powder in comparison
with the standard sponge cake. The addition of fennel to cake mix effected positively on
the final product.
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