Hassan M . Al-Sayed | Al-Azhar University (original) (raw)

Papers by Hassan M . Al-Sayed

Research paper thumbnail of Impact of Different Fertilizers on Black Cumin (Nigella Sativa L) Plants and Their Relation to Release Kinetics of Nitrogen and Phosphorus

Egyptian Journal of Soil Science, Sep 1, 2024

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Research paper thumbnail of Irrigation regime with organic and bio-fertilizers for faba bean production grown on sand clay loam soil

Journal of plant nutrition, Apr 12, 2024

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Research paper thumbnail of Carbon Mineralization Kinetics and Soil Fertility Induced by Organic and Bio-Fertilization Through Different Incubation Periods

Communications in Soil Science and Plant Analysis, Dec 19, 2023

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Research paper thumbnail of Improved plant yield of potato through exogenously applied potassium fertilizer sources and biofertilizer

AMB Express

Excessive usage of chemical fertilizers has detrimental effects on the environment and the safety... more Excessive usage of chemical fertilizers has detrimental effects on the environment and the safety of food. Conversely, utilizing organic fertilizers such as sage offers several advantages, including cost-effectiveness, soil enhancement, and promotion of root development. A two-year field experiment was conducted to investigate the impact of different potassium fertilizer sources and biofertilizers (specifically Bacillus cereus (MBc)) on potato plants. The experiment employed a split-plot design with three replicates, where the main plot factor was MBc (with and without), and the subplot factor was the sources of potassium fertilizer (control without K fertilizer, 100% Feldspar (FD), 100% Filter cake (FC), 75% FD + 25% FC, 25% FD + 75% FC, and 50% FD + 50% FC). The purpose was to examine the growth response of potato plants to these treatments. The results indicated that all treatments increased plant height, stem count, and tuber dry matter compared to the control. Furthermore, all ...

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Research paper thumbnail of Carbon Mineralization Kinetics and Soil Fertility Induced by Organic and Bio-Fertilization Through Different Incubation Periods

Taylor and Francis, 2013

Agricultural practices such as fertilization considerably influence soil carbon dioxide (CO 2) fl... more Agricultural practices such as fertilization considerably influence soil carbon dioxide (CO 2) fluxes that cause climate changes. The study aims to test the influence of various organic (vermicompost, VC, and rabbit manure, RM) and bio (Azotobacter and Azospirillum) fertilizers in addition to incubation times on CO 2 flux, carbon (C) mineralization kinetic, and some soil chemical properties. The dual exponential equation was the best one to describe carbon mineralization kinetics compared to the 1 st and 2 nd order equations. Carbon half-lives were resided by 18.98, 1.97, 2.00, 1.89, and 2.53 years for control, VC without and with bio, RM without and with bio treatments, respectively. The results exposed that applying VC and RM without or with bio-fertilizer reduced soil reaction (pH) that differ than control treatment after 2 months incubation. Applying VC and RM caused a significant increase in soil salinity (EC) compared to the control. Available nitrogen (N), phosphorus (P) and potassium (K) were significantly enhanced with adding different fertilizers compared to pre-treated soil. It is found that adding organic and biofertilizers improved fertility and soil quality.

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Research paper thumbnail of Phosphorus Sources and Sheep Manure Fertilization for Soil Properties Enhancement and Sugar Beet Yield

Gesunde Pflanzen, Aug 9, 2023

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Research paper thumbnail of Growth Biostimulants as Synthetic Hormone Replacements for Rooting, Vegetative Growth and Chemical Constituents Promotion in Rose Cuttings Under Different Growing Media

Assiut Journal of Agricultural Sciences

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Research paper thumbnail of Impact of applying organic fertilizers activated by doses of NPK the new reclaimed soil and wheat productivity

Archives of Agriculture Sciences Journal, Apr 1, 2022

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Research paper thumbnail of Effects of compost and biofertilizer on carbon dioxide emission, yield, and quality of roselle (<i>Hibiscus sabdariffa</i> L.) plants grown on clay loam

Journal of Plant Nutrition, Jan 2, 2023

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Research paper thumbnail of Compost and Non-Symbiotic Nitrogen Fixers to Reduce Inorganic-N Rates for Roselle (Hibiscus sabdariffa L.)

Communications in Soil Science and Plant Analysis

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Research paper thumbnail of Impact of applying organic fertilizers activated by doses of NPK the new reclaimed soil and wheat productivity

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Research paper thumbnail of Evaluation of Phosphorous and Potassium Status in Soils of Assiut Governorate

Assiut Journal of Agricultural Sciences, 2016

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Research paper thumbnail of Combined Effect of Prickly Pear Waste Biochar and Azolla on Soil Fertility, Growth, and Yield of Roselle (Hibiscus sabdariffa L.) Plants

Journal of Soil Science and Plant Nutrition

Although the use of biochar to promote plant growth has been reported by many researchers, the co... more Although the use of biochar to promote plant growth has been reported by many researchers, the combined effect of prickly pear waste biochar (BC) and Azolla (AZ) in a field experiment on the roselle plants did yet receive attention. Therefore, the study aims to evaluate the effect of biochar and Azolla extract on the growth, production, and quality of roselle plants. The experiment treatments were in a completely randomized block design with three replicates. Biochar was added at rates of 0, 10, and 20 ton ha−1 and AZ was applied at rates of 0, 3, and 6% in addition to a control treatment. Biochar added at high rate (20 ton ha−1) significantly increased the fresh and dry weights of sepals by 27.98 and 35.73%, respectively, compared to the control. The corresponding values were significantly increased by 11.89 and 11.85% over the control when Azolla was added at rate of 6%. The interaction effect of both BC and AZ treatments at high rate significantly increased the fresh and dry weig...

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Research paper thumbnail of Evaluation of quality and growth of roselle (Hibiscus sabdariffa L.) as affected by bio-fertilizers

Journal of Plant Nutrition

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Research paper thumbnail of Evaluation of Phosphorous and Potassium Status in Soils of Assiut Governorate

Assiut J. Agric. Sci., (47) No. (1) 2016 (89-104), 2016

Optimal use of nutrients based on soil analysis can improve crop productivity and minimize enviro... more Optimal use of nutrients based on soil analysis can improve crop productivity and minimize environmental pollution. Therefore this study aimed to assess forms of both potassium and phosphorus in soils of Assiut and the relationship between both elements and some soil properties. The study area was divided into 10 transects and 54 soil profiles were selected. Soil samples from two depths (0-30 and 30-60 cm) at each location were collected then they were analyzed by standard methods. Available and total content of both phosphorus and potassium were measured. The correlation matrix of soil properties shows that several physical and chemical variables were correlated with each other especially, CaCO3, OM, pH, EC and CEC. Soil salinity (EC) of 90% of soil samples were less than 2 dS/m. Soil reaction (pH) of Assiut Governorate ranged from 7.22 to 8.92 with average value of 7.98. The soil organic matter (SOM) content of Assiut governorate ranged from 0.33 to 4.09% with average value of 1.51 %. Available phosphorus was low in 63.9%, medium in 21.3% and high in 14.8% of the soil samples. Available phosphorus was low in 63.9%, medium in 21.3% and high in 14.8% of the soil samples. Available potassium was low in 16.7% soil samples and 60.2% of soil samples were medium. The remaining 23.2% of soil samples were high. Soil Nutrient Index of the study area was found in category of low phosphorus, medium potassium and high OMC.

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Research paper thumbnail of Integrated Effect of Inorganic and Organic Nitrogen Sources on Growth and Yield of Roselle (Hibiscus sabdariffa L

Assiut J. Agric. Sci, 2019

The pot experiment was conducted in summer season of 2017 at Assiut Governorate, Egypt, to study ... more The pot experiment was conducted in summer season of 2017 at Assiut Governorate, Egypt, to study the influence of compost and different rates of inorganic nitrogen on growth and chemical composition roselle as well as yield. The studied treatments include the application of recommended dose of N as T 1 = urea, T 2 = compost, T 3 = 75% urea + 25 % compost and T 4 = 50% urea +50% compost. Plants treated with the combination of mineral nitrogen and organic fertilization gave the highest significant values of growth parameters, i.e., plant height, as well as fresh and dry weight of leaves, chlorophyll, carotenoids, N, P and K contents in leaves tissues. While the application of full dose in the inorganic form gave the moderate values compared to the untreated plant. The maximum sepals yield was obtained from the 100% of N from compost treatment which increased the fresh and dry weight of sepals by 228.75 and 138.96% above the untreated soil. Generally it is concluded that roselle sepals yield and quality can be improved through the treatment of 100% composted and application of 50 % urea + 50 % compost improved the growth and yield of roselle also increased the available N nutrients in the soil as well as the macronutrients concentrations. Therefore, this treatment could be recommended to obtain economical yield with satisfactory quality and to improve the soil fertility under the conditions of the studied area.

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Research paper thumbnail of Journal of Plant Nutrition Evaluation of quality and growth of roselle (Hibiscus sabdariffa L.) as affected by bio-fertilizers

Journal of Plant Nutrition, 2020

Roselle (Hibiscus sabdariffa L.) plant is a valuable medicinal crop in arid and semi-arid regions... more Roselle (Hibiscus sabdariffa L.) plant is a valuable medicinal crop in arid and semi-arid regions. The use of microbes as bio-fertilizers in enhancing crop production is more favorable than chemical fertilizers due to food safety. A pot experiment was conducted to explore the effect of Azotobacter chroococcum and Azospirillum brasiliense as a bio-fertilizer on the growth, yield, and quietly of roselle plants. Roselle seeds were mixed with the tested biofertilizer and cultivated on plastic pots filled with a sandy clay loam soil. The bio-fertilization significantly (p<0.05) increased the growth, nutrients uptake, yield, and quality of roselle plants compared to the untreated plants. The inoculation of roselle plants with the bio-fertilizer increased the total chlorophyll, carotenoid, total anthocyanin (TAC), and total flavonel (TF) by 16.45, 26.10, 8.44, and 14.27%, respectively, above the control. The bio-fertilization increased the soil available nitrogen by 14.33% above the control, and increased the uptake of N, P, and K by 18.8, 17.81, and 12.75%. The biofertilization not only increased the quality of roselle plants but also increased the fresh and dry weights of sepals yield by 5.89 and 3.55%, respectively.

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Research paper thumbnail of Impact of Different Fertilizers on Black Cumin (Nigella Sativa L) Plants and Their Relation to Release Kinetics of Nitrogen and Phosphorus

Egyptian Journal of Soil Science, Sep 1, 2024

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Research paper thumbnail of Irrigation regime with organic and bio-fertilizers for faba bean production grown on sand clay loam soil

Journal of plant nutrition, Apr 12, 2024

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Research paper thumbnail of Carbon Mineralization Kinetics and Soil Fertility Induced by Organic and Bio-Fertilization Through Different Incubation Periods

Communications in Soil Science and Plant Analysis, Dec 19, 2023

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Research paper thumbnail of Improved plant yield of potato through exogenously applied potassium fertilizer sources and biofertilizer

AMB Express

Excessive usage of chemical fertilizers has detrimental effects on the environment and the safety... more Excessive usage of chemical fertilizers has detrimental effects on the environment and the safety of food. Conversely, utilizing organic fertilizers such as sage offers several advantages, including cost-effectiveness, soil enhancement, and promotion of root development. A two-year field experiment was conducted to investigate the impact of different potassium fertilizer sources and biofertilizers (specifically Bacillus cereus (MBc)) on potato plants. The experiment employed a split-plot design with three replicates, where the main plot factor was MBc (with and without), and the subplot factor was the sources of potassium fertilizer (control without K fertilizer, 100% Feldspar (FD), 100% Filter cake (FC), 75% FD + 25% FC, 25% FD + 75% FC, and 50% FD + 50% FC). The purpose was to examine the growth response of potato plants to these treatments. The results indicated that all treatments increased plant height, stem count, and tuber dry matter compared to the control. Furthermore, all ...

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Research paper thumbnail of Carbon Mineralization Kinetics and Soil Fertility Induced by Organic and Bio-Fertilization Through Different Incubation Periods

Taylor and Francis, 2013

Agricultural practices such as fertilization considerably influence soil carbon dioxide (CO 2) fl... more Agricultural practices such as fertilization considerably influence soil carbon dioxide (CO 2) fluxes that cause climate changes. The study aims to test the influence of various organic (vermicompost, VC, and rabbit manure, RM) and bio (Azotobacter and Azospirillum) fertilizers in addition to incubation times on CO 2 flux, carbon (C) mineralization kinetic, and some soil chemical properties. The dual exponential equation was the best one to describe carbon mineralization kinetics compared to the 1 st and 2 nd order equations. Carbon half-lives were resided by 18.98, 1.97, 2.00, 1.89, and 2.53 years for control, VC without and with bio, RM without and with bio treatments, respectively. The results exposed that applying VC and RM without or with bio-fertilizer reduced soil reaction (pH) that differ than control treatment after 2 months incubation. Applying VC and RM caused a significant increase in soil salinity (EC) compared to the control. Available nitrogen (N), phosphorus (P) and potassium (K) were significantly enhanced with adding different fertilizers compared to pre-treated soil. It is found that adding organic and biofertilizers improved fertility and soil quality.

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Research paper thumbnail of Phosphorus Sources and Sheep Manure Fertilization for Soil Properties Enhancement and Sugar Beet Yield

Gesunde Pflanzen, Aug 9, 2023

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Research paper thumbnail of Growth Biostimulants as Synthetic Hormone Replacements for Rooting, Vegetative Growth and Chemical Constituents Promotion in Rose Cuttings Under Different Growing Media

Assiut Journal of Agricultural Sciences

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Research paper thumbnail of Impact of applying organic fertilizers activated by doses of NPK the new reclaimed soil and wheat productivity

Archives of Agriculture Sciences Journal, Apr 1, 2022

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Research paper thumbnail of Effects of compost and biofertilizer on carbon dioxide emission, yield, and quality of roselle (<i>Hibiscus sabdariffa</i> L.) plants grown on clay loam

Journal of Plant Nutrition, Jan 2, 2023

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Research paper thumbnail of Compost and Non-Symbiotic Nitrogen Fixers to Reduce Inorganic-N Rates for Roselle (Hibiscus sabdariffa L.)

Communications in Soil Science and Plant Analysis

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Research paper thumbnail of Impact of applying organic fertilizers activated by doses of NPK the new reclaimed soil and wheat productivity

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Evaluation of Phosphorous and Potassium Status in Soils of Assiut Governorate

Assiut Journal of Agricultural Sciences, 2016

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Research paper thumbnail of Combined Effect of Prickly Pear Waste Biochar and Azolla on Soil Fertility, Growth, and Yield of Roselle (Hibiscus sabdariffa L.) Plants

Journal of Soil Science and Plant Nutrition

Although the use of biochar to promote plant growth has been reported by many researchers, the co... more Although the use of biochar to promote plant growth has been reported by many researchers, the combined effect of prickly pear waste biochar (BC) and Azolla (AZ) in a field experiment on the roselle plants did yet receive attention. Therefore, the study aims to evaluate the effect of biochar and Azolla extract on the growth, production, and quality of roselle plants. The experiment treatments were in a completely randomized block design with three replicates. Biochar was added at rates of 0, 10, and 20 ton ha−1 and AZ was applied at rates of 0, 3, and 6% in addition to a control treatment. Biochar added at high rate (20 ton ha−1) significantly increased the fresh and dry weights of sepals by 27.98 and 35.73%, respectively, compared to the control. The corresponding values were significantly increased by 11.89 and 11.85% over the control when Azolla was added at rate of 6%. The interaction effect of both BC and AZ treatments at high rate significantly increased the fresh and dry weig...

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Research paper thumbnail of Evaluation of quality and growth of roselle (Hibiscus sabdariffa L.) as affected by bio-fertilizers

Journal of Plant Nutrition

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Research paper thumbnail of Evaluation of Phosphorous and Potassium Status in Soils of Assiut Governorate

Assiut J. Agric. Sci., (47) No. (1) 2016 (89-104), 2016

Optimal use of nutrients based on soil analysis can improve crop productivity and minimize enviro... more Optimal use of nutrients based on soil analysis can improve crop productivity and minimize environmental pollution. Therefore this study aimed to assess forms of both potassium and phosphorus in soils of Assiut and the relationship between both elements and some soil properties. The study area was divided into 10 transects and 54 soil profiles were selected. Soil samples from two depths (0-30 and 30-60 cm) at each location were collected then they were analyzed by standard methods. Available and total content of both phosphorus and potassium were measured. The correlation matrix of soil properties shows that several physical and chemical variables were correlated with each other especially, CaCO3, OM, pH, EC and CEC. Soil salinity (EC) of 90% of soil samples were less than 2 dS/m. Soil reaction (pH) of Assiut Governorate ranged from 7.22 to 8.92 with average value of 7.98. The soil organic matter (SOM) content of Assiut governorate ranged from 0.33 to 4.09% with average value of 1.51 %. Available phosphorus was low in 63.9%, medium in 21.3% and high in 14.8% of the soil samples. Available phosphorus was low in 63.9%, medium in 21.3% and high in 14.8% of the soil samples. Available potassium was low in 16.7% soil samples and 60.2% of soil samples were medium. The remaining 23.2% of soil samples were high. Soil Nutrient Index of the study area was found in category of low phosphorus, medium potassium and high OMC.

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Research paper thumbnail of Integrated Effect of Inorganic and Organic Nitrogen Sources on Growth and Yield of Roselle (Hibiscus sabdariffa L

Assiut J. Agric. Sci, 2019

The pot experiment was conducted in summer season of 2017 at Assiut Governorate, Egypt, to study ... more The pot experiment was conducted in summer season of 2017 at Assiut Governorate, Egypt, to study the influence of compost and different rates of inorganic nitrogen on growth and chemical composition roselle as well as yield. The studied treatments include the application of recommended dose of N as T 1 = urea, T 2 = compost, T 3 = 75% urea + 25 % compost and T 4 = 50% urea +50% compost. Plants treated with the combination of mineral nitrogen and organic fertilization gave the highest significant values of growth parameters, i.e., plant height, as well as fresh and dry weight of leaves, chlorophyll, carotenoids, N, P and K contents in leaves tissues. While the application of full dose in the inorganic form gave the moderate values compared to the untreated plant. The maximum sepals yield was obtained from the 100% of N from compost treatment which increased the fresh and dry weight of sepals by 228.75 and 138.96% above the untreated soil. Generally it is concluded that roselle sepals yield and quality can be improved through the treatment of 100% composted and application of 50 % urea + 50 % compost improved the growth and yield of roselle also increased the available N nutrients in the soil as well as the macronutrients concentrations. Therefore, this treatment could be recommended to obtain economical yield with satisfactory quality and to improve the soil fertility under the conditions of the studied area.

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Research paper thumbnail of Journal of Plant Nutrition Evaluation of quality and growth of roselle (Hibiscus sabdariffa L.) as affected by bio-fertilizers

Journal of Plant Nutrition, 2020

Roselle (Hibiscus sabdariffa L.) plant is a valuable medicinal crop in arid and semi-arid regions... more Roselle (Hibiscus sabdariffa L.) plant is a valuable medicinal crop in arid and semi-arid regions. The use of microbes as bio-fertilizers in enhancing crop production is more favorable than chemical fertilizers due to food safety. A pot experiment was conducted to explore the effect of Azotobacter chroococcum and Azospirillum brasiliense as a bio-fertilizer on the growth, yield, and quietly of roselle plants. Roselle seeds were mixed with the tested biofertilizer and cultivated on plastic pots filled with a sandy clay loam soil. The bio-fertilization significantly (p<0.05) increased the growth, nutrients uptake, yield, and quality of roselle plants compared to the untreated plants. The inoculation of roselle plants with the bio-fertilizer increased the total chlorophyll, carotenoid, total anthocyanin (TAC), and total flavonel (TF) by 16.45, 26.10, 8.44, and 14.27%, respectively, above the control. The bio-fertilization increased the soil available nitrogen by 14.33% above the control, and increased the uptake of N, P, and K by 18.8, 17.81, and 12.75%. The biofertilization not only increased the quality of roselle plants but also increased the fresh and dry weights of sepals yield by 5.89 and 3.55%, respectively.

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