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Articles by Abdel-Kareem M. El-Saady
Total Records ( 4 ) for Abdel-Kareem M. El-Saady
  Mahmoud M. Shaaban , Mohamed M. Housein and Abdel-Kareem M. El-Saady
  Pot experiment was conducted in the greenhouse of National Research Centre with 6 barley (Hordeum vulgaris L.) genotypes (Giza 123, Giza 124, Giza 125, Giza 126, Giza 127 and Giza 128) to investigate the effect of different salinity levels (250, 2000, 4000 and 6000 mg L1) in the irrigation water on the nutrient status (uptake, concentrations and balance) in the shoot tissues. Variations in genotypic tolerance to salinity stress were also under investigation. Uptakes of N, P, K, Mn and Cu were significantly declined as salinity dose in the irrigation water increased. The most affected nutrient ratios were N/P, P/Mn and P/Zn. Concentrations of nutrients in all studded genotypes were disturbed and N-concentration was deficient in the shoot tissues of all genotypes grown under salinity stress, except of Giza 127. Nutrient balances in all genotypes under investigation were also disturbed. Giza 127 was the only genotype which nutrient ratios in its shoot tissues were near to the sufficient ranges.
  Mohamed M. Hussein , Mahmoud M. Shaaban and Abdel-Kareem M. El-Saady
  Pot experiment was conducted in the greenhouse of the National Research Centre to study the effect of two doses (50 and 100 mg L-1) of PK foliar fertilization in the form of K2PO3 on leaf nutrient concentrations and growth parameters of cowpea (Vigna unguiculata L.) grown under two diluted Mediterranean seawater levels (3.0, 6.0 dS m-1) in the irrigation water in addition to tap water (0.4 dS m-1) as control. Diluted seawater as irrigation led to significant decreases of macro and micronutrients concentrations in the leaves of cowpea plants. Plant height, number of green leaves, fresh and dry weights were also negatively affected with high significance (p0.05) as the plants irrigated with saline water. PK-foliar fertilization in the form of K2PO3 could increase P, K and other macro- and micronutrient concentrations in the leaves of the salt-stressed plants. The most effective dose was the 100 mg L-1 K2PO3 with the lower salinity level (3.0 dS m-1). Making the plants more tolerant to salinity stress, PK-foliar fertilization could improve plant growth parameters and increase plant heights, number of green leaves, fresh and dry weights.
  Mahmoud M. Shaaban , Mohamed M. Housein and Abdel-Kareem M. El-Saady
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  Mohamed M. Hussein , Mahmoud M. Shaaban and Abdel-Kareem M. El-Saady
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