The Experts below are selected from a list of 126 Experts worldwide ranked by ideXlab platform
Diegane Diouf - One of the best experts on this subject based on the ideXlab platform.
-
Importance and trees management of senegalia senegal on soil fertility and yield of associated crops in northern senegal
2019Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatou Ndoye, Julia Wilson, Alioune Kane, Elhadji Serigne Sylla, Didier Lesueur, Diegane DioufAbstract:Trees are usually eliminated in field due their possible competition with crops for water and nutrients. Our work aimed to investigate how to manage S. senegal trees to optimize their association with crops. A field trial was conducted under natural conditions in a S. senegal plantation 10 years old. Investigations were conducted during two years to evaluate the effect of S. senegal trees management on gum arabic yield, associated cowpea yield, soil mycorrhizal fungi spores density and enzymes activities reflecting soil fertility such as fluorescein diacetate (FDA), acid phosphatase and dehydrogenase. Four treatments of pruning were applicated (control, shoots, roots, shoots and roots pruning) and tapped in november. Soil samples were collected during dry and wet seasons at 0-25 cm layer. Cowpeas were sown at the beginning of rainy season in rows 0.5 m apart. Results showed that shoots pruning significantly increased gum arabic while a negative effect of roots pruning was noted. The presence of S. senegal increased soil fertility and cowpea yield. Any significant effect of treatments was noted on pods yield during the first year. However, shoots pruning, shoot and roots pruning increased significantly pods yield during the second year. Shoots and roots pruning seemed to decrease FDA and spores density depending on the season. Our results showed that shoots and roots pruning increased the positive effect on soil fertility and the association of S. senegal with annual crops.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:The soil amendment with peanut shells (4, 6 or 8 t ha −1 ) improves soil properties and growth of senegalia senegal (L.) Britton , Vachellia seyal ( Delile) P . Hurter and Prosopis juliflora (Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl). Salinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species. The aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils. Seedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress. Peanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings. The organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
senegalia senegal (synonym: Acacia senegal), its importance to sub-Saharan Africa, and its relationship with a wide range of symbiotic soil microorganisms
South African Journal of Botany, 2018Co-Authors: Niokhor Bakhoum, Dioumacor Fall, Fatoumata Fall, Fatou Diouf, Ann M. Hirsch, Dananjeyan Balachandar, Diegane DioufAbstract:Abstract Changing environmental conditions in dryland areas exacerbate land degradation and food insecurity in many sub-Saharan African nations. Multi-purpose tree species such as senegalia senegal (L.) Britton, are favored for reforestation and land reclamation as compared to single-use species. A great deal of research has also focused on this tree species due to its ability to fix atmospheric nitrogen into ammonia, which is returned over time to the soil via the recycling of N-rich plant tissue. We review the recent literature on how S. senegal contributes to soil fertility and crop production especially in the context of sustainable and ecological agriculture. We also review the current literature on this legume species with regard to its microsymbionts, with the goal of further maximizing the potential of S. senegal for agriculture in sub-Saharan Africa. senegalia senegal, which has the potential to restore degraded soils and to be used for agroforestry, is both economically and ecologically important for the dry areas of sub-Saharan Africa because it produces gum arabic, an important commodity crop for smallholder farmers; it succeeds where other crops fail. This tree species also can correct soil fertility loss caused by continuous agriculture and worsened by a reduced or non-existent fallow period. senegalia senegal and its soil microbes are positively associated with this species' ability to survive in harsh conditions. This tree is an important candidate for restoring soil fertility and providing commercial products especially in countries with arid environments.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Mathieu Ndigue Faye, Valérie Hocher, Cheikh Ndiaye, Diegane DioufAbstract:AbstractKey messageThe soil amendment with peanut shells (4, 6 or 8 t ha−1) improves soil properties and growth ofsenegalia senegal(L.) Britton, Vachellia seyal (Delile) P.Hurter andProsopis juliflora(Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl).ContextSalinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species.AimsThe aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils.MethodsSeedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress.ResultsPeanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings.ConclusionThe organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
Improvement of tree growth in salt-affected soils under greenhouse conditions using a combination of peanut shells and microbial inoculation
Journal of Agricultural Biotechnology and Sustainable Development, 2017Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:This study aimed at selecting an effective microbial inoculum to enhance the performance of senegalia senegal, Vachellia seyal and Prosopis juliflora and assessing the combination effect of microbial inoculation and peanut shells amendment on their growth under salinity in greenhouse conditions. In the first experiment, seedlings were individually cultivated in plastic bags containing non-sterile sandy soil. Seedlings were inoculated at transplantation with rhizobial and arbuscular mycorrhizal fungi (AMF) strains. Four inoculation treatments were performed: control, inoculation with rhizobia, inoculation with AMF and dual-inoculation with rhizobia and AMF. After one month, seedlings were gradually watered with four saline solutions (0, 86, 171 and 257 mM NaCl) for 4 months. ANOVA showed that inoculation treatments significantly increased seedlings growth particularly in saline conditions and the best performance was obtained with dual inoculation. In the second experiment, seedlings were grown under the same experimental conditions on a mixture of non-sterile sandy soil and 6 tha-1 (169.56 g per bag) of peanut shells var 73-33. Results showed that inoculation, peanut shells and their combination significantly improved seedlings growth. The higher performance was obtained with the combination of microbial inoculation and peanut shells. Key words: Mycorrhiza, rhizobia, organic amendment, senegalia senegal, Vachellia seyal, Prosopis juliflora, salt tolerance.
Dioumacor Fall - One of the best experts on this subject based on the ideXlab platform.
-
Importance and trees management of senegalia senegal on soil fertility and yield of associated crops in northern senegal
2019Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatou Ndoye, Julia Wilson, Alioune Kane, Elhadji Serigne Sylla, Didier Lesueur, Diegane DioufAbstract:Trees are usually eliminated in field due their possible competition with crops for water and nutrients. Our work aimed to investigate how to manage S. senegal trees to optimize their association with crops. A field trial was conducted under natural conditions in a S. senegal plantation 10 years old. Investigations were conducted during two years to evaluate the effect of S. senegal trees management on gum arabic yield, associated cowpea yield, soil mycorrhizal fungi spores density and enzymes activities reflecting soil fertility such as fluorescein diacetate (FDA), acid phosphatase and dehydrogenase. Four treatments of pruning were applicated (control, shoots, roots, shoots and roots pruning) and tapped in november. Soil samples were collected during dry and wet seasons at 0-25 cm layer. Cowpeas were sown at the beginning of rainy season in rows 0.5 m apart. Results showed that shoots pruning significantly increased gum arabic while a negative effect of roots pruning was noted. The presence of S. senegal increased soil fertility and cowpea yield. Any significant effect of treatments was noted on pods yield during the first year. However, shoots pruning, shoot and roots pruning increased significantly pods yield during the second year. Shoots and roots pruning seemed to decrease FDA and spores density depending on the season. Our results showed that shoots and roots pruning increased the positive effect on soil fertility and the association of S. senegal with annual crops.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:The soil amendment with peanut shells (4, 6 or 8 t ha −1 ) improves soil properties and growth of senegalia senegal (L.) Britton , Vachellia seyal ( Delile) P . Hurter and Prosopis juliflora (Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl). Salinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species. The aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils. Seedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress. Peanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings. The organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
senegalia senegal (synonym: Acacia senegal), its importance to sub-Saharan Africa, and its relationship with a wide range of symbiotic soil microorganisms
South African Journal of Botany, 2018Co-Authors: Niokhor Bakhoum, Dioumacor Fall, Fatoumata Fall, Fatou Diouf, Ann M. Hirsch, Dananjeyan Balachandar, Diegane DioufAbstract:Abstract Changing environmental conditions in dryland areas exacerbate land degradation and food insecurity in many sub-Saharan African nations. Multi-purpose tree species such as senegalia senegal (L.) Britton, are favored for reforestation and land reclamation as compared to single-use species. A great deal of research has also focused on this tree species due to its ability to fix atmospheric nitrogen into ammonia, which is returned over time to the soil via the recycling of N-rich plant tissue. We review the recent literature on how S. senegal contributes to soil fertility and crop production especially in the context of sustainable and ecological agriculture. We also review the current literature on this legume species with regard to its microsymbionts, with the goal of further maximizing the potential of S. senegal for agriculture in sub-Saharan Africa. senegalia senegal, which has the potential to restore degraded soils and to be used for agroforestry, is both economically and ecologically important for the dry areas of sub-Saharan Africa because it produces gum arabic, an important commodity crop for smallholder farmers; it succeeds where other crops fail. This tree species also can correct soil fertility loss caused by continuous agriculture and worsened by a reduced or non-existent fallow period. senegalia senegal and its soil microbes are positively associated with this species' ability to survive in harsh conditions. This tree is an important candidate for restoring soil fertility and providing commercial products especially in countries with arid environments.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Mathieu Ndigue Faye, Valérie Hocher, Cheikh Ndiaye, Diegane DioufAbstract:AbstractKey messageThe soil amendment with peanut shells (4, 6 or 8 t ha−1) improves soil properties and growth ofsenegalia senegal(L.) Britton, Vachellia seyal (Delile) P.Hurter andProsopis juliflora(Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl).ContextSalinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species.AimsThe aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils.MethodsSeedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress.ResultsPeanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings.ConclusionThe organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
Improvement of tree growth in salt-affected soils under greenhouse conditions using a combination of peanut shells and microbial inoculation
Journal of Agricultural Biotechnology and Sustainable Development, 2017Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:This study aimed at selecting an effective microbial inoculum to enhance the performance of senegalia senegal, Vachellia seyal and Prosopis juliflora and assessing the combination effect of microbial inoculation and peanut shells amendment on their growth under salinity in greenhouse conditions. In the first experiment, seedlings were individually cultivated in plastic bags containing non-sterile sandy soil. Seedlings were inoculated at transplantation with rhizobial and arbuscular mycorrhizal fungi (AMF) strains. Four inoculation treatments were performed: control, inoculation with rhizobia, inoculation with AMF and dual-inoculation with rhizobia and AMF. After one month, seedlings were gradually watered with four saline solutions (0, 86, 171 and 257 mM NaCl) for 4 months. ANOVA showed that inoculation treatments significantly increased seedlings growth particularly in saline conditions and the best performance was obtained with dual inoculation. In the second experiment, seedlings were grown under the same experimental conditions on a mixture of non-sterile sandy soil and 6 tha-1 (169.56 g per bag) of peanut shells var 73-33. Results showed that inoculation, peanut shells and their combination significantly improved seedlings growth. The higher performance was obtained with the combination of microbial inoculation and peanut shells. Key words: Mycorrhiza, rhizobia, organic amendment, senegalia senegal, Vachellia seyal, Prosopis juliflora, salt tolerance.
Ayben Kilislioglu - One of the best experts on this subject based on the ideXlab platform.
-
preparation and characterization of antibacterial senegalia acacia senegal iron silica bio nanocomposites
Applied Surface Science, 2015Co-Authors: Tuba Şişmanoğlu, Selcan Karakuş, Özgür Birer, Gulin Selda Pozan Soylu, Ayşen Kolan, Ezgi Tan, Öykü Ürk, Gizem Akdut, Ayben KilisliogluAbstract:Abstract Many studies that research bio-nanocomposites utilize techniques that involve the dispersion of strengthening components like silica, metal and metal oxides through a host biopolymer matrix. The biggest success factor for the bio-nanocomposite is having a smooth integration of organic and inorganic phases. This interattraction between the surfaces of inorganic particles and organic molecules are vital for good dispersion. In this study, a novel biodegradable antibacterial material was developed using gum arabic from senegalia senegal (stabilizer), silica (structure reinforcer) and zero valent iron particles. Silica particles work to not only strengthen the mechanical properties of the senegalia senegal but also prevent the accumulation of ZVI nanoparticles due to attraction between hydroxyl groups and FeO. The gum arabic/Fe–SiO 2 bio-nanocomposite showed effective antibacterial property against the Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli . Using Scanning electron microscopy, homogeneous dispersion and uniform particle size was viewed in the biopolymer. X-ray diffraction studies of iron particles organization in senegalia senegal also showed that the main portion of iron was crystalline and in the form of FeO and Fe 0 . X-ray photoelectron spectroscopy was used to evaluate the chemical composition of the surface but no appreciable peak was measured for the iron before Ar etching. These results suggest that the surface of iron nanoparticles consist mainly of a layer of iron oxides in the form of FeO. Thermal gravimetric analysis was used to determine the thermal stability and absorbed moisture content.
-
Preparation and characterization of antibacterial senegalia (Acacia) senegal/iron–silica bio-nanocomposites
Applied Surface Science, 2015Co-Authors: Tuba Şişmanoğlu, Selcan Karakuş, Özgür Birer, Gulin Selda Pozan Soylu, Ayşen Kolan, Ezgi Tan, Öykü Ürk, Gizem Akdut, Ayben KilisliogluAbstract:Abstract Many studies that research bio-nanocomposites utilize techniques that involve the dispersion of strengthening components like silica, metal and metal oxides through a host biopolymer matrix. The biggest success factor for the bio-nanocomposite is having a smooth integration of organic and inorganic phases. This interattraction between the surfaces of inorganic particles and organic molecules are vital for good dispersion. In this study, a novel biodegradable antibacterial material was developed using gum arabic from senegalia senegal (stabilizer), silica (structure reinforcer) and zero valent iron particles. Silica particles work to not only strengthen the mechanical properties of the senegalia senegal but also prevent the accumulation of ZVI nanoparticles due to attraction between hydroxyl groups and FeO. The gum arabic/Fe–SiO 2 bio-nanocomposite showed effective antibacterial property against the Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli . Using Scanning electron microscopy, homogeneous dispersion and uniform particle size was viewed in the biopolymer. X-ray diffraction studies of iron particles organization in senegalia senegal also showed that the main portion of iron was crystalline and in the form of FeO and Fe 0 . X-ray photoelectron spectroscopy was used to evaluate the chemical composition of the surface but no appreciable peak was measured for the iron before Ar etching. These results suggest that the surface of iron nanoparticles consist mainly of a layer of iron oxides in the form of FeO. Thermal gravimetric analysis was used to determine the thermal stability and absorbed moisture content.
Niokhor Bakhoum - One of the best experts on this subject based on the ideXlab platform.
-
Importance and trees management of senegalia senegal on soil fertility and yield of associated crops in northern senegal
2019Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatou Ndoye, Julia Wilson, Alioune Kane, Elhadji Serigne Sylla, Didier Lesueur, Diegane DioufAbstract:Trees are usually eliminated in field due their possible competition with crops for water and nutrients. Our work aimed to investigate how to manage S. senegal trees to optimize their association with crops. A field trial was conducted under natural conditions in a S. senegal plantation 10 years old. Investigations were conducted during two years to evaluate the effect of S. senegal trees management on gum arabic yield, associated cowpea yield, soil mycorrhizal fungi spores density and enzymes activities reflecting soil fertility such as fluorescein diacetate (FDA), acid phosphatase and dehydrogenase. Four treatments of pruning were applicated (control, shoots, roots, shoots and roots pruning) and tapped in november. Soil samples were collected during dry and wet seasons at 0-25 cm layer. Cowpeas were sown at the beginning of rainy season in rows 0.5 m apart. Results showed that shoots pruning significantly increased gum arabic while a negative effect of roots pruning was noted. The presence of S. senegal increased soil fertility and cowpea yield. Any significant effect of treatments was noted on pods yield during the first year. However, shoots pruning, shoot and roots pruning increased significantly pods yield during the second year. Shoots and roots pruning seemed to decrease FDA and spores density depending on the season. Our results showed that shoots and roots pruning increased the positive effect on soil fertility and the association of S. senegal with annual crops.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:The soil amendment with peanut shells (4, 6 or 8 t ha −1 ) improves soil properties and growth of senegalia senegal (L.) Britton , Vachellia seyal ( Delile) P . Hurter and Prosopis juliflora (Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl). Salinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species. The aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils. Seedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress. Peanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings. The organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
senegalia senegal (synonym: Acacia senegal), its importance to sub-Saharan Africa, and its relationship with a wide range of symbiotic soil microorganisms
South African Journal of Botany, 2018Co-Authors: Niokhor Bakhoum, Dioumacor Fall, Fatoumata Fall, Fatou Diouf, Ann M. Hirsch, Dananjeyan Balachandar, Diegane DioufAbstract:Abstract Changing environmental conditions in dryland areas exacerbate land degradation and food insecurity in many sub-Saharan African nations. Multi-purpose tree species such as senegalia senegal (L.) Britton, are favored for reforestation and land reclamation as compared to single-use species. A great deal of research has also focused on this tree species due to its ability to fix atmospheric nitrogen into ammonia, which is returned over time to the soil via the recycling of N-rich plant tissue. We review the recent literature on how S. senegal contributes to soil fertility and crop production especially in the context of sustainable and ecological agriculture. We also review the current literature on this legume species with regard to its microsymbionts, with the goal of further maximizing the potential of S. senegal for agriculture in sub-Saharan Africa. senegalia senegal, which has the potential to restore degraded soils and to be used for agroforestry, is both economically and ecologically important for the dry areas of sub-Saharan Africa because it produces gum arabic, an important commodity crop for smallholder farmers; it succeeds where other crops fail. This tree species also can correct soil fertility loss caused by continuous agriculture and worsened by a reduced or non-existent fallow period. senegalia senegal and its soil microbes are positively associated with this species' ability to survive in harsh conditions. This tree is an important candidate for restoring soil fertility and providing commercial products especially in countries with arid environments.
-
Effect of peanut shells amendment on soil properties and growth of seedlings of senegalia senegal (L.) Britton, Vachellia seyal (Delile) P. Hurter, and Prosopis juliflora (Swartz) DC in salt-affected soils
Annals of Forest Science, 2018Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Mathieu Ndigue Faye, Valérie Hocher, Cheikh Ndiaye, Diegane DioufAbstract:AbstractKey messageThe soil amendment with peanut shells (4, 6 or 8 t ha−1) improves soil properties and growth ofsenegalia senegal(L.) Britton, Vachellia seyal (Delile) P.Hurter andProsopis juliflora(Swartz) DC seedlings on salty soils (86, 171, 257 mM NaCl).ContextSalinization causes the degradation of biological, chemical, and physical properties of soils. Salty soils reclamation can be achieved with organic amendments and afforestation with salt tolerant species.AimsThe aim of the study was to assess in greenhouse conditions the effect of peanut shells on soil chemical characteristics and growth of multipurpose leguminous trees senegalia senegal, Vachellia seyal, and Prosopis juliflora under salt-affected soils.MethodsSeedlings were individually cultivated in plastic bags containing a mixture of non-saline and non-sterile soil and crushed peanut shells. Four doses of peanut shells (0, 4, 6, and 8 t ha−1) of 73-33 variety were tested. Salt stress was gradually applied after 1 month of cultivation at a rate of 43 mM NaCl per day until concentrations of 0, 86, 171, and 257 mM were reached. Seedlings growth, physiological responses, and soil characteristics were evaluated after 3 months of stress.ResultsPeanut shells application improved soil chemical properties (carbon, nitrogen, phosphorus contents, pH, total microbial activity, and cation-exchange capacity) and reduced soil salinity. They also increased height, collar diameter, shoots and root biomass, chlorophyll, and proline contents of seedlings.ConclusionThe organic amendment with peanut shells improves soil fertility and tree growth under saline conditions.
-
Improvement of tree growth in salt-affected soils under greenhouse conditions using a combination of peanut shells and microbial inoculation
Journal of Agricultural Biotechnology and Sustainable Development, 2017Co-Authors: Dioumacor Fall, Niokhor Bakhoum, Fatoumata Fall, Fatou Diouf, Ndiaye, Mathieu Ndigue Faye, Valérie Hocher, Diegane DioufAbstract:This study aimed at selecting an effective microbial inoculum to enhance the performance of senegalia senegal, Vachellia seyal and Prosopis juliflora and assessing the combination effect of microbial inoculation and peanut shells amendment on their growth under salinity in greenhouse conditions. In the first experiment, seedlings were individually cultivated in plastic bags containing non-sterile sandy soil. Seedlings were inoculated at transplantation with rhizobial and arbuscular mycorrhizal fungi (AMF) strains. Four inoculation treatments were performed: control, inoculation with rhizobia, inoculation with AMF and dual-inoculation with rhizobia and AMF. After one month, seedlings were gradually watered with four saline solutions (0, 86, 171 and 257 mM NaCl) for 4 months. ANOVA showed that inoculation treatments significantly increased seedlings growth particularly in saline conditions and the best performance was obtained with dual inoculation. In the second experiment, seedlings were grown under the same experimental conditions on a mixture of non-sterile sandy soil and 6 tha-1 (169.56 g per bag) of peanut shells var 73-33. Results showed that inoculation, peanut shells and their combination significantly improved seedlings growth. The higher performance was obtained with the combination of microbial inoculation and peanut shells. Key words: Mycorrhiza, rhizobia, organic amendment, senegalia senegal, Vachellia seyal, Prosopis juliflora, salt tolerance.
Tuba Şişmanoğlu - One of the best experts on this subject based on the ideXlab platform.
-
preparation and characterization of antibacterial senegalia acacia senegal iron silica bio nanocomposites
Applied Surface Science, 2015Co-Authors: Tuba Şişmanoğlu, Selcan Karakuş, Özgür Birer, Gulin Selda Pozan Soylu, Ayşen Kolan, Ezgi Tan, Öykü Ürk, Gizem Akdut, Ayben KilisliogluAbstract:Abstract Many studies that research bio-nanocomposites utilize techniques that involve the dispersion of strengthening components like silica, metal and metal oxides through a host biopolymer matrix. The biggest success factor for the bio-nanocomposite is having a smooth integration of organic and inorganic phases. This interattraction between the surfaces of inorganic particles and organic molecules are vital for good dispersion. In this study, a novel biodegradable antibacterial material was developed using gum arabic from senegalia senegal (stabilizer), silica (structure reinforcer) and zero valent iron particles. Silica particles work to not only strengthen the mechanical properties of the senegalia senegal but also prevent the accumulation of ZVI nanoparticles due to attraction between hydroxyl groups and FeO. The gum arabic/Fe–SiO 2 bio-nanocomposite showed effective antibacterial property against the Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli . Using Scanning electron microscopy, homogeneous dispersion and uniform particle size was viewed in the biopolymer. X-ray diffraction studies of iron particles organization in senegalia senegal also showed that the main portion of iron was crystalline and in the form of FeO and Fe 0 . X-ray photoelectron spectroscopy was used to evaluate the chemical composition of the surface but no appreciable peak was measured for the iron before Ar etching. These results suggest that the surface of iron nanoparticles consist mainly of a layer of iron oxides in the form of FeO. Thermal gravimetric analysis was used to determine the thermal stability and absorbed moisture content.
-
Preparation and characterization of antibacterial senegalia (Acacia) senegal/iron–silica bio-nanocomposites
Applied Surface Science, 2015Co-Authors: Tuba Şişmanoğlu, Selcan Karakuş, Özgür Birer, Gulin Selda Pozan Soylu, Ayşen Kolan, Ezgi Tan, Öykü Ürk, Gizem Akdut, Ayben KilisliogluAbstract:Abstract Many studies that research bio-nanocomposites utilize techniques that involve the dispersion of strengthening components like silica, metal and metal oxides through a host biopolymer matrix. The biggest success factor for the bio-nanocomposite is having a smooth integration of organic and inorganic phases. This interattraction between the surfaces of inorganic particles and organic molecules are vital for good dispersion. In this study, a novel biodegradable antibacterial material was developed using gum arabic from senegalia senegal (stabilizer), silica (structure reinforcer) and zero valent iron particles. Silica particles work to not only strengthen the mechanical properties of the senegalia senegal but also prevent the accumulation of ZVI nanoparticles due to attraction between hydroxyl groups and FeO. The gum arabic/Fe–SiO 2 bio-nanocomposite showed effective antibacterial property against the Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli . Using Scanning electron microscopy, homogeneous dispersion and uniform particle size was viewed in the biopolymer. X-ray diffraction studies of iron particles organization in senegalia senegal also showed that the main portion of iron was crystalline and in the form of FeO and Fe 0 . X-ray photoelectron spectroscopy was used to evaluate the chemical composition of the surface but no appreciable peak was measured for the iron before Ar etching. These results suggest that the surface of iron nanoparticles consist mainly of a layer of iron oxides in the form of FeO. Thermal gravimetric analysis was used to determine the thermal stability and absorbed moisture content.
