Soil Properties and Their Effect on Some Biological Activities in Abu Suberia Valley- Aswan, Egypt.

Ali, Alshaymaa Ibrahim Ahmed; Mahgoubb, Samir; Bahnasawy, Nabil Mohamed; Tahoun, Salah A.

doi:10.21608/ejss.2018.1972.1138

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…8 at a depth of 0-50 cm with an average value of 30.57%. Bahnasawy, (2018) and Ali et al, (2018)found that kaolinite is the dominant mineral compared to other clay minerals. These results showed that the soil under study was not exposed to severe weathering.…”

Section: Mineral Compositions Of Clay Fractionsmentioning

confidence: 99%

Mineralogical Study of Clay Fraction of Soil Along Nasser Lake Affected by Construction of The High Dam, Aswan, Egypt

Sweed

2023

Egypt.J. Soil Sci.

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LAY mineralogy studies were essential for understanding the weathering environments and source regions of fluvial sediments affected by construction of the High Dam. This study conducted in Aswan Governorate, Egypt, to knowing the minerals formed the clay fraction separated from some horizons of soil profiles. To achieve this purpose, were taken eight soil profiles from the western side of Nasser Lake to evaluate some soil properties and study clay mineralogy. The clay fraction was separated from the layers have a high content of clay and prepared for X-ray diffractometry which used to determination, to define of the different clay and accessory minerals. Our results showed that, the soil pH ranged from neutral (7.36) to highly alkaline (8.9), and it was classified as non-saline to highly saline and slightly to moderately calcareous. So, the values of soil EC ranged from 0.17 to 5.8 dSm -1 and CaCO 3 ranged from 0.04 to 7.39%, respectively. Moreover, the cation exchange capacity (CEC) was low to very high, ranging from 6.1 to 44.28 CmoL c kg -1 , with a predominantly sandy texture. Also, results revealed that, dominated contents of kaolinite minerals indicated followed by smectite, micasmectite, vermiculite, Sepiolite and plagioclase. The identified accessory minerals were dominant quartz followed by aragonite, calcite and hematite. In general, weathering was not severe because accessory minerals were not formed in large quantities, and perhaps these obtained results are due to the type of parent material predominated, whether present in the study area or transported across of Nile River to the place of sedimentation, and the weather conditions prevailing in the study area helped in that.

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Section: Mineral Compositions Of Clay Fractionsmentioning

confidence: 99%

Mineralogical Study of Clay Fraction of Soil Along Nasser Lake Affected by Construction of The High Dam, Aswan, Egypt

Sweed

2023

Egypt.J. Soil Sci.

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“…Among the most important of abiotic stresses, drought is particularly detrimental to plant growth and yield in agricultural production, affecting the world's food security (Vurukonda et al, 2016), and if current trends continue, droughtaffected areas are expected to double, and water resources will decrease by 30% by 2050 (Kasim et al, 2013).Therefore, the presence of water in the rhizosphere area is a major parameter that determines the availability of water, oxygen, and nutrients to plants and microorganisms (Van Gestel et al, 1993). Also, the complex interactions among microorganisms, roots, soil, and water in the rhizosphere induce changes in physico-chemical and structural properties of the soil (Haynes andSwift, 1990 andAli et al, 2018). In addition to, the behavior growth of legumes are affected by drought, which can due to reduction in vegetative growth, nodulation, yield and yield component, with a gradual decrease in nutrients of the plants (Costa et al, 2011, Omara and El-Gaafarey, 2018, Abd-Elrahman and Taha, 2018and Abdelhameid, 2019.…”

Section: Introductionmentioning

confidence: 99%

Interaction effect of skipping irrigation and co-inoculation with Bradyrhizobium and some strains of Bacillus bacteria on growth dynamics of cowpea (Vigna unguiculata L.) its yield and water productivity

Abdel-Fattah¹,

El-Nahrawy

El-Mansoury

2020

Egypt.J. Soil Sci.

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A FIELD experiment was conducted at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, North Nile Delta area, Egypt during the two successive growing seasons 2018 and 2019 to assess the interaction effect of skipping irrigation and co-inoculation of cowpea (Vigna 2019 to assess the interaction effect of skipping irrigation and co-inoculation of cowpea (Vigna radiata L.), with Bradyrhizobium sp. and some strains of Bacillus bacteria on growth dynamics, yield and water productivity. Spilt-plot design was used, the main plots were assigned to four treatments of water stress; I 1 : control treatment (no stress); I 2 : withholding one irrigation at the vegetative growth stage; I 3 : withholding one irrigation at the flowering growth stage; I 4 : withholding one irrigation at pod formation stage; while inoculation treatments were assigned to sub main plots which were: T 1 : inoculation with Bradyrhizobium sp. TAL 169 (control); T 2 : inoculation with Bradyrhizobium sp. TAL 169 + B. subtilis MF497446;T 3: inoculation with Bradyrhizobium sp. TAL 169 + B. coagulans NCAIM B.01123; T 4: inoculation with Bradyrhizobium sp. TAL 169 + B. circulance NCAIM B.02324. Our results of this present investigation showed that the flowering stage is the most sensitive stage in connection with cowpea watering following with vegetative and pod formation stages. Also, treatment I 4 T 4 recorded high values 7.61 g plant -1 , 39.00, 0.388 g plant -1 , 256.00 mg plant -1 and 1.054 mg g -1 FW at the first growing season for dry weight of plant, number of nodules plant -1 , dry weight of nodules, N and total chlorophyll contents compared to other treatments at 45 days after sowing (DAS), respectively. A similar trend was observed at 60 DAS. Irrigation at all stages accompanied with inoculation by Bradyrhizobium + B. circulance (I 1 T 4 treatment) gave the highest number of pods plant -1 , 100 seed weight and yield which the corresponding decrease in yield was 11.8, 1.4 and 0.4 %, for flowering, vegetative and pod formation stages, respectively. On the contrary, withdrawn irrigation at formation (I 4 ) under T 4 produced the highest values of productivity of irrigation water (PIW) and water productivity (WP). Herein, irrigation treatments followed the descending order of I 1 > I 2 > I 3 > I 4 . However, it followed as T 4 > T 3 > T 2 > T 1 under inoculation treatments. Thus, inoculation with Bradyrhizobium sp. + B. circulance under withholding one irrigation at pod formation stage could be efficiently used to partially eliminate the effects of water stress on growth dynamics of cowpea.

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Soil Properties and Their Effect on Some Biological Activities in Abu Suberia Valley- Aswan, Egypt.

Cited by 2 publications

References 9 publications

Mineralogical Study of Clay Fraction of Soil Along Nasser Lake Affected by Construction of The High Dam, Aswan, Egypt

Mineralogical Study of Clay Fraction of Soil Along Nasser Lake Affected by Construction of The High Dam, Aswan, Egypt

Interaction effect of skipping irrigation and co-inoculation with Bradyrhizobium and some strains of Bacillus bacteria on growth dynamics of cowpea (Vigna unguiculata L.) its yield and water productivity

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