| Titles |
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English :
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Influence of soil salinity on CEC, growth and NPK content of wheat roots
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Arabic :
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تأثير ملوحة التربة على السعه التبادلية الكاتيونيه والنمو والمحتوى النيتروجينى والفوسفورى والبوتاسي لجذور القمح
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| Abstract |
In arid and semi arid region with irrigated agriculture conditions ,excess soluble salts often occurs .Bread wheat is one of the primary crops used for human feeding .The wheat root response type of salinity tolerant and salinity sensitive cultivar against to salinity hazard is unclear . The work aimed to study the effect of soil salinity levels ( 0.08 ,0.2, 0.4and 0.6 %) were assessed on root growth and root cation exchange capacity in relation to N,P and K content of two wheat varieties (Sakha 92 , salinity tolerant and Gemmiza 9 , salinity sensitive)
The obtained results can be summarized in the following
Raising soil salinity level from control to 0.2 % caused an increase in root dry weight of both varieties , while soil salinity levels above 0.2 % high significantly decreased root dry weight .
Sakha 92 cv. all over the growth stages gave the highest values of root dry weight than that of the another one (Gemmiza 9 ) where root weight of Sakha 92 represent 108.8 % of Gemmiza 9 Cv. at tillering stage, 104.0 % at flowering and 104.9 %at maturity
Root cation exchange capacity values of wheat roots at flowering stage represented 122.70% and 169.73 % of that at tillering and maturity stage ,respectively .
Soil salinity level of 0.2% led to a rise root cation exchange capacity ( average of the two wheat varieties ) by 2.58% compared to control at tillering stage, and by 1.93% compared to control at flowering. At maturity, the same treatment of soil salinity led to decrease root cation exchange capacity by 9.31% ( from 4.264 meq/100 gm to 3.867 meq/100 gm) compared to control.
Soil salinity level above 0.2 % decreased root cation exchange capacity of wheat roots to a large extent at flowering stage.
Root cation exchange capacity values of Sakha 92 cv. were found to be higher at any growth stage, than that of Gemmiza 9 cv.
Root cation exchange capacity positively correlated with root weight in each physiological growth stage.
Soil salinity to a large extent controls nitrogen concentration of wheat roots , which positively correlated with root cation exchange capacity at any physiological stage .
The reduction in nitrogen percent due to salinity hazard was higher in Gemmiza 9 cultivar ( salinity sensitive ) than that of Sakha 92 cultivar ( salinity tolerant) at any growth stage.
Positive correlation between wheat roots cation exchange capacity and phosphorus percent of wheat roots was found.
Potassium concentration of roots significantly correlated with root cation exchange capacity and the correlation coefficient value differd from physiological stage to another, where it was 0.4842 for tillering, 0.7478 for flowering and 0.6095 for maturity stages
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| Publication year |
2005
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| Pages |
5675 -5687
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| Availability location |
Soils, Water and Environment Research Institute, ARC, 9 Cairo Univ. St., Giza, Egypt
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| Availability number |
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| City |
Mansoura
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| serial title |
Mansoura University Journal of Agricultural Sciences
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| ISSN |
1110-0346
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| Author(s) from ARC |
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| External authors (outside ARC) |
محمد وجدى العجرودى
كلية الزراعة - جامعة المنصورة
جمعه لبيب
كلية الزراعة - جامعة المنصورة
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| Agris Categories |
FertilizingPlant physiology - NutritionSoil fertility
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AGROVOC
TERMS |
Ion exchange capacity.
Nutrients.
Soil salinity.
Wheats.
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| Publication Type |
Journal
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