Leon Nabahungu | IITA - Academia.edu (original) (raw)

Papers by Leon Nabahungu

Research paper thumbnail of Options of improved management of wetlands in Rwanda

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Research paper thumbnail of Quantification and Classification of Household Solid Waste in the City of Bukavu, DRC

OAlib, 2022

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Research paper thumbnail of Role of native arbuscular mycorrhizal fungi on maize (Zea mays) growth and nutrient uptake in acidic soils under controlled conditions

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2022

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Research paper thumbnail of Urea briquettes combined with a fertilizer blend reduces fertilizer costs and improves yields of irrigated rice in Rwanda

Agronomy Journal

We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland ... more We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland rice (Oryza sativa L.) fertilizer recommendation from the current practice of 200 kg NPK 17‐17‐17 ha−1 and 100 kg urea ha−1 with a basal blend of 74 kg diammonium phosphate (DAP), 57 kg potassium chloride (KCl), and deep placement of 112.5 kg urea briquettes ha−1 at 4 weeks after transplanting. Experiments were carried out in nine diverse marshlands across Rwanda in the long and short rainy seasons of 2016, with the two fertilizer treatments and a no‐fertilizer control. Compared to the current practice, the urea deep placement (UDP) package increased yields by 1.08 and 0.84 mt ha−1 in the respective seasons, while at the same time lowering N fertilizer rate by 15 kg ha−1. Average value to cost ratio increased from 1.89 (current recommendation) to 3.16 (UDP recommendation) and would be still greater than 2.0 at six times increase in labor cost. The cost of fertilizer recommendation (ferti...

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Research paper thumbnail of Réponse du soja (Glycine max L.) à des doses croissantes du DAP et Urée au Sud-Kivu, RD Congo

Journal of Applied Biosciences, 2018

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Research paper thumbnail of Famer’s Perception of Land Management Practices and Compliance with Land Use Regulations Regarding the Impact on Water Quality, in Migina Catchment, Rwanda

International Journal of Environment, Agriculture and Biotechnology, 2021

The Migina catchment is found in the Southern province of Rwanda and is very significant for wate... more The Migina catchment is found in the Southern province of Rwanda and is very significant for water uses such as irrigation, fish ponds and drinking but remains prejudiced by numerous land uses along its valley and marshlands. In this study, the famer’s perception was investigated in a total of nine sites purposively selected as representing growing settlements and agricultural fields that seem to have more potential to release pollutants and sediments affecting water quality. The methodology used includes the face-to-face interview, Focus Group Discussions and Key Informants Interviews and the collected information was completed by land use changes revealed by historical maps thanks to GIS tools for more evidences. This is also deepening by a physical observation during a transect walk. Growing settlements and agricultural activities were the key factors affecting land cover and downhill water quality. The Migina river faces visible pollution especially during heavy rain season. It receives tributaries and other wastewater from runoff considered to be pollution sources viewed by water uses. The main proposed measures to be taken are planting trees, constructing terraces where needed, rain water harvesting and river bank protection. Contrary to governmental regulation, farmers use to over cultivate up to the border of the river violating the 10 meters recommended to be protected. Therefore, floods and sludge’s are sometimes observed as confirmed by 65 % of respondents. 75 % of interviewed said that domestic animals have access within 10 meters of the river. Moreover, chemicals are used as pesticides or inorganic fertilizers especially for maize and rice as confirmed by 100 % of interviewees. 33.3 % of households responded that trees plantations including afforestation, forest rehabilitation and Agroforestry system is the best strategy to overcome the issue of land and wastes moving towards downhill surface waters. 21.7 % of interviewed mainly from zones with high slop think that the use of terraces is the best solution while 16.7 % have chosen rain water harvesting as best option to reduce pollutant and sediments in downhill surface water. The use of improved stoves and renewable energies as biogas, bottled methane gas to minimize cutting trees for charcoal and wood for cooking was proposed by 8.3 % and the river bank protection as downhill side measure by 20 % of respondents. Land use and land cover change analysis using vegetation cover maps from 1990 to 2015 demonstrated a significant change in land use associated with deforestation increasing in parallel with agricultural activities and growing settlements. Compared to the total area of Migina catchment, settlements ‘area has changed from 1.26 % to 1.8 %, cropland from 66.8 % to 76.5 %, forestlands from 31.64 % to 12.2 %, wetland from 0.27 % to 0.40 % and grassland from 0.03 % to 8.40 %. As a result, the stresses of human population growth are combined and add to the limited land management practices making this study imperative in order to identify mitigation strategies as solution-based of land and water conservation.

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Research paper thumbnail of Host plants and edaphic factors influence the distribution and diversity of ectomycorrhizal fungal fruiting bodies within rainforests from Tshopo, Democratic Republic of the Congo

African Journal of Ecology, 2019

Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant ... more Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant nutrition and resistance against stresses. Diversity of ectomycorrhizal (EcM) fungi is, however, affected by host plant diversity and soil heterogeneity. This study provides information about the influence of host plants and soil resources on the diversity of ectomycorrhizal fungal fruiting bodies from rainforests of the Democratic Republic of the Congo. Based on the presence of fungal fruiting bodies, significant differences in the number of ectomycorrhizal fungi species existed between forest stand types (p < 0.001). The most ectomycorrhizal species‐rich forest was the Gilbertiodendron dewevrei‐dominated forest (61 species). Of all 93 species of ectomycorrhizal fungi, 19 demonstrated a significant indicator value for particular forest stand types. Of all analysed edaphic factors, the percentage of silt particles was the most important parameter influencing EcM fungi host plant tree ...

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Research paper thumbnail of Options of improved management of wetlands in Rwanda

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Research paper thumbnail of Quantification and Classification of Household Solid Waste in the City of Bukavu, DRC

OAlib, 2022

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Research paper thumbnail of Role of native arbuscular mycorrhizal fungi on maize (Zea mays) growth and nutrient uptake in acidic soils under controlled conditions

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2022

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Research paper thumbnail of Urea briquettes combined with a fertilizer blend reduces fertilizer costs and improves yields of irrigated rice in Rwanda

Agronomy Journal

We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland ... more We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland rice (Oryza sativa L.) fertilizer recommendation from the current practice of 200 kg NPK 17‐17‐17 ha−1 and 100 kg urea ha−1 with a basal blend of 74 kg diammonium phosphate (DAP), 57 kg potassium chloride (KCl), and deep placement of 112.5 kg urea briquettes ha−1 at 4 weeks after transplanting. Experiments were carried out in nine diverse marshlands across Rwanda in the long and short rainy seasons of 2016, with the two fertilizer treatments and a no‐fertilizer control. Compared to the current practice, the urea deep placement (UDP) package increased yields by 1.08 and 0.84 mt ha−1 in the respective seasons, while at the same time lowering N fertilizer rate by 15 kg ha−1. Average value to cost ratio increased from 1.89 (current recommendation) to 3.16 (UDP recommendation) and would be still greater than 2.0 at six times increase in labor cost. The cost of fertilizer recommendation (ferti...

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Research paper thumbnail of Réponse du soja (Glycine max L.) à des doses croissantes du DAP et Urée au Sud-Kivu, RD Congo

Journal of Applied Biosciences, 2018

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Research paper thumbnail of Famer’s Perception of Land Management Practices and Compliance with Land Use Regulations Regarding the Impact on Water Quality, in Migina Catchment, Rwanda

International Journal of Environment, Agriculture and Biotechnology, 2021

The Migina catchment is found in the Southern province of Rwanda and is very significant for wate... more The Migina catchment is found in the Southern province of Rwanda and is very significant for water uses such as irrigation, fish ponds and drinking but remains prejudiced by numerous land uses along its valley and marshlands. In this study, the famer’s perception was investigated in a total of nine sites purposively selected as representing growing settlements and agricultural fields that seem to have more potential to release pollutants and sediments affecting water quality. The methodology used includes the face-to-face interview, Focus Group Discussions and Key Informants Interviews and the collected information was completed by land use changes revealed by historical maps thanks to GIS tools for more evidences. This is also deepening by a physical observation during a transect walk. Growing settlements and agricultural activities were the key factors affecting land cover and downhill water quality. The Migina river faces visible pollution especially during heavy rain season. It receives tributaries and other wastewater from runoff considered to be pollution sources viewed by water uses. The main proposed measures to be taken are planting trees, constructing terraces where needed, rain water harvesting and river bank protection. Contrary to governmental regulation, farmers use to over cultivate up to the border of the river violating the 10 meters recommended to be protected. Therefore, floods and sludge’s are sometimes observed as confirmed by 65 % of respondents. 75 % of interviewed said that domestic animals have access within 10 meters of the river. Moreover, chemicals are used as pesticides or inorganic fertilizers especially for maize and rice as confirmed by 100 % of interviewees. 33.3 % of households responded that trees plantations including afforestation, forest rehabilitation and Agroforestry system is the best strategy to overcome the issue of land and wastes moving towards downhill surface waters. 21.7 % of interviewed mainly from zones with high slop think that the use of terraces is the best solution while 16.7 % have chosen rain water harvesting as best option to reduce pollutant and sediments in downhill surface water. The use of improved stoves and renewable energies as biogas, bottled methane gas to minimize cutting trees for charcoal and wood for cooking was proposed by 8.3 % and the river bank protection as downhill side measure by 20 % of respondents. Land use and land cover change analysis using vegetation cover maps from 1990 to 2015 demonstrated a significant change in land use associated with deforestation increasing in parallel with agricultural activities and growing settlements. Compared to the total area of Migina catchment, settlements ‘area has changed from 1.26 % to 1.8 %, cropland from 66.8 % to 76.5 %, forestlands from 31.64 % to 12.2 %, wetland from 0.27 % to 0.40 % and grassland from 0.03 % to 8.40 %. As a result, the stresses of human population growth are combined and add to the limited land management practices making this study imperative in order to identify mitigation strategies as solution-based of land and water conservation.

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Research paper thumbnail of Host plants and edaphic factors influence the distribution and diversity of ectomycorrhizal fungal fruiting bodies within rainforests from Tshopo, Democratic Republic of the Congo

African Journal of Ecology, 2019

Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant ... more Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant nutrition and resistance against stresses. Diversity of ectomycorrhizal (EcM) fungi is, however, affected by host plant diversity and soil heterogeneity. This study provides information about the influence of host plants and soil resources on the diversity of ectomycorrhizal fungal fruiting bodies from rainforests of the Democratic Republic of the Congo. Based on the presence of fungal fruiting bodies, significant differences in the number of ectomycorrhizal fungi species existed between forest stand types (p < 0.001). The most ectomycorrhizal species‐rich forest was the Gilbertiodendron dewevrei‐dominated forest (61 species). Of all 93 species of ectomycorrhizal fungi, 19 demonstrated a significant indicator value for particular forest stand types. Of all analysed edaphic factors, the percentage of silt particles was the most important parameter influencing EcM fungi host plant tree ...

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Research paper thumbnail of Selection of bean lines tolerant to low soil fertility conditions in Africa

BEAN IMPROVEMENT …, 2002

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Research paper thumbnail of Selection of bean lines tolerant to low soil fertility conditions in Africa

BEAN IMPROVEMENT …, 2002

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Research paper thumbnail of Maize‐Nutrient Response Functions for Eastern and Southern Africa

Agronomy Journal, 2018

Core Ideas Mean maize response to N is similar in Kenya, Tanzania, and Rwanda. Maize is relativel... more Core Ideas Mean maize response to N is similar in Kenya, Tanzania, and Rwanda. Maize is relatively more responsive to nitrogen in Malawi and Rwanda. Maize is responsive to phosphorus and potassium in Rwanda. There is little potential for profitable response to phosphorus and potassium in most areas of East Africa. Maize response to Mg–S–Zn–B needs more investigation in Rwanda. Information is scarce for maize (Zea mays L.) response to nutrient application for many production areas in tropical Africa. Research was conducted to determine macronutrient response functions and to diagnose Mg–S–Zn–B deficiencies. Site–year × N‐rate interactions within countries often accounted for little variation in yield relative to the N‐rate effect. Country mean grain yield responses to N‐rate were curvilinear to plateau, but linear in Malawi. Although mean yields differed, the response to N was similar for Kenya, Tanzania, and Zambia with a mean yield increase of 0.94 Mg ha−1 due to 50 kg ha−1 N compa...

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Research paper thumbnail of T4FS project Ethiopia Baseline Survey.xlsx

Baseline Data that was collected in Ethiopia.

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Research paper thumbnail of LDSF_FieldForm_2013.pdf

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Research paper thumbnail of Alem Tena Infilitration.xlsx

Baseline data

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Research paper thumbnail of Options of improved management of wetlands in Rwanda

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Quantification and Classification of Household Solid Waste in the City of Bukavu, DRC

OAlib, 2022

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Research paper thumbnail of Role of native arbuscular mycorrhizal fungi on maize (Zea mays) growth and nutrient uptake in acidic soils under controlled conditions

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2022

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Research paper thumbnail of Urea briquettes combined with a fertilizer blend reduces fertilizer costs and improves yields of irrigated rice in Rwanda

Agronomy Journal

We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland ... more We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland rice (Oryza sativa L.) fertilizer recommendation from the current practice of 200 kg NPK 17‐17‐17 ha−1 and 100 kg urea ha−1 with a basal blend of 74 kg diammonium phosphate (DAP), 57 kg potassium chloride (KCl), and deep placement of 112.5 kg urea briquettes ha−1 at 4 weeks after transplanting. Experiments were carried out in nine diverse marshlands across Rwanda in the long and short rainy seasons of 2016, with the two fertilizer treatments and a no‐fertilizer control. Compared to the current practice, the urea deep placement (UDP) package increased yields by 1.08 and 0.84 mt ha−1 in the respective seasons, while at the same time lowering N fertilizer rate by 15 kg ha−1. Average value to cost ratio increased from 1.89 (current recommendation) to 3.16 (UDP recommendation) and would be still greater than 2.0 at six times increase in labor cost. The cost of fertilizer recommendation (ferti...

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Research paper thumbnail of Réponse du soja (Glycine max L.) à des doses croissantes du DAP et Urée au Sud-Kivu, RD Congo

Journal of Applied Biosciences, 2018

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Famer’s Perception of Land Management Practices and Compliance with Land Use Regulations Regarding the Impact on Water Quality, in Migina Catchment, Rwanda

International Journal of Environment, Agriculture and Biotechnology, 2021

The Migina catchment is found in the Southern province of Rwanda and is very significant for wate... more The Migina catchment is found in the Southern province of Rwanda and is very significant for water uses such as irrigation, fish ponds and drinking but remains prejudiced by numerous land uses along its valley and marshlands. In this study, the famer’s perception was investigated in a total of nine sites purposively selected as representing growing settlements and agricultural fields that seem to have more potential to release pollutants and sediments affecting water quality. The methodology used includes the face-to-face interview, Focus Group Discussions and Key Informants Interviews and the collected information was completed by land use changes revealed by historical maps thanks to GIS tools for more evidences. This is also deepening by a physical observation during a transect walk. Growing settlements and agricultural activities were the key factors affecting land cover and downhill water quality. The Migina river faces visible pollution especially during heavy rain season. It receives tributaries and other wastewater from runoff considered to be pollution sources viewed by water uses. The main proposed measures to be taken are planting trees, constructing terraces where needed, rain water harvesting and river bank protection. Contrary to governmental regulation, farmers use to over cultivate up to the border of the river violating the 10 meters recommended to be protected. Therefore, floods and sludge’s are sometimes observed as confirmed by 65 % of respondents. 75 % of interviewed said that domestic animals have access within 10 meters of the river. Moreover, chemicals are used as pesticides or inorganic fertilizers especially for maize and rice as confirmed by 100 % of interviewees. 33.3 % of households responded that trees plantations including afforestation, forest rehabilitation and Agroforestry system is the best strategy to overcome the issue of land and wastes moving towards downhill surface waters. 21.7 % of interviewed mainly from zones with high slop think that the use of terraces is the best solution while 16.7 % have chosen rain water harvesting as best option to reduce pollutant and sediments in downhill surface water. The use of improved stoves and renewable energies as biogas, bottled methane gas to minimize cutting trees for charcoal and wood for cooking was proposed by 8.3 % and the river bank protection as downhill side measure by 20 % of respondents. Land use and land cover change analysis using vegetation cover maps from 1990 to 2015 demonstrated a significant change in land use associated with deforestation increasing in parallel with agricultural activities and growing settlements. Compared to the total area of Migina catchment, settlements ‘area has changed from 1.26 % to 1.8 %, cropland from 66.8 % to 76.5 %, forestlands from 31.64 % to 12.2 %, wetland from 0.27 % to 0.40 % and grassland from 0.03 % to 8.40 %. As a result, the stresses of human population growth are combined and add to the limited land management practices making this study imperative in order to identify mitigation strategies as solution-based of land and water conservation.

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Research paper thumbnail of Host plants and edaphic factors influence the distribution and diversity of ectomycorrhizal fungal fruiting bodies within rainforests from Tshopo, Democratic Republic of the Congo

African Journal of Ecology, 2019

Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant ... more Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant nutrition and resistance against stresses. Diversity of ectomycorrhizal (EcM) fungi is, however, affected by host plant diversity and soil heterogeneity. This study provides information about the influence of host plants and soil resources on the diversity of ectomycorrhizal fungal fruiting bodies from rainforests of the Democratic Republic of the Congo. Based on the presence of fungal fruiting bodies, significant differences in the number of ectomycorrhizal fungi species existed between forest stand types (p < 0.001). The most ectomycorrhizal species‐rich forest was the Gilbertiodendron dewevrei‐dominated forest (61 species). Of all 93 species of ectomycorrhizal fungi, 19 demonstrated a significant indicator value for particular forest stand types. Of all analysed edaphic factors, the percentage of silt particles was the most important parameter influencing EcM fungi host plant tree ...

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Research paper thumbnail of Options of improved management of wetlands in Rwanda

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Quantification and Classification of Household Solid Waste in the City of Bukavu, DRC

OAlib, 2022

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Role of native arbuscular mycorrhizal fungi on maize (Zea mays) growth and nutrient uptake in acidic soils under controlled conditions

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2022

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Urea briquettes combined with a fertilizer blend reduces fertilizer costs and improves yields of irrigated rice in Rwanda

Agronomy Journal

We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland ... more We evaluated the yield and potential economic impact in Rwanda of replacing the standard lowland rice (Oryza sativa L.) fertilizer recommendation from the current practice of 200 kg NPK 17‐17‐17 ha−1 and 100 kg urea ha−1 with a basal blend of 74 kg diammonium phosphate (DAP), 57 kg potassium chloride (KCl), and deep placement of 112.5 kg urea briquettes ha−1 at 4 weeks after transplanting. Experiments were carried out in nine diverse marshlands across Rwanda in the long and short rainy seasons of 2016, with the two fertilizer treatments and a no‐fertilizer control. Compared to the current practice, the urea deep placement (UDP) package increased yields by 1.08 and 0.84 mt ha−1 in the respective seasons, while at the same time lowering N fertilizer rate by 15 kg ha−1. Average value to cost ratio increased from 1.89 (current recommendation) to 3.16 (UDP recommendation) and would be still greater than 2.0 at six times increase in labor cost. The cost of fertilizer recommendation (ferti...

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Research paper thumbnail of Réponse du soja (Glycine max L.) à des doses croissantes du DAP et Urée au Sud-Kivu, RD Congo

Journal of Applied Biosciences, 2018

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Famer’s Perception of Land Management Practices and Compliance with Land Use Regulations Regarding the Impact on Water Quality, in Migina Catchment, Rwanda

International Journal of Environment, Agriculture and Biotechnology, 2021

The Migina catchment is found in the Southern province of Rwanda and is very significant for wate... more The Migina catchment is found in the Southern province of Rwanda and is very significant for water uses such as irrigation, fish ponds and drinking but remains prejudiced by numerous land uses along its valley and marshlands. In this study, the famer’s perception was investigated in a total of nine sites purposively selected as representing growing settlements and agricultural fields that seem to have more potential to release pollutants and sediments affecting water quality. The methodology used includes the face-to-face interview, Focus Group Discussions and Key Informants Interviews and the collected information was completed by land use changes revealed by historical maps thanks to GIS tools for more evidences. This is also deepening by a physical observation during a transect walk. Growing settlements and agricultural activities were the key factors affecting land cover and downhill water quality. The Migina river faces visible pollution especially during heavy rain season. It receives tributaries and other wastewater from runoff considered to be pollution sources viewed by water uses. The main proposed measures to be taken are planting trees, constructing terraces where needed, rain water harvesting and river bank protection. Contrary to governmental regulation, farmers use to over cultivate up to the border of the river violating the 10 meters recommended to be protected. Therefore, floods and sludge’s are sometimes observed as confirmed by 65 % of respondents. 75 % of interviewed said that domestic animals have access within 10 meters of the river. Moreover, chemicals are used as pesticides or inorganic fertilizers especially for maize and rice as confirmed by 100 % of interviewees. 33.3 % of households responded that trees plantations including afforestation, forest rehabilitation and Agroforestry system is the best strategy to overcome the issue of land and wastes moving towards downhill surface waters. 21.7 % of interviewed mainly from zones with high slop think that the use of terraces is the best solution while 16.7 % have chosen rain water harvesting as best option to reduce pollutant and sediments in downhill surface water. The use of improved stoves and renewable energies as biogas, bottled methane gas to minimize cutting trees for charcoal and wood for cooking was proposed by 8.3 % and the river bank protection as downhill side measure by 20 % of respondents. Land use and land cover change analysis using vegetation cover maps from 1990 to 2015 demonstrated a significant change in land use associated with deforestation increasing in parallel with agricultural activities and growing settlements. Compared to the total area of Migina catchment, settlements ‘area has changed from 1.26 % to 1.8 %, cropland from 66.8 % to 76.5 %, forestlands from 31.64 % to 12.2 %, wetland from 0.27 % to 0.40 % and grassland from 0.03 % to 8.40 %. As a result, the stresses of human population growth are combined and add to the limited land management practices making this study imperative in order to identify mitigation strategies as solution-based of land and water conservation.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Host plants and edaphic factors influence the distribution and diversity of ectomycorrhizal fungal fruiting bodies within rainforests from Tshopo, Democratic Republic of the Congo

African Journal of Ecology, 2019

Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant ... more Ectomycorrhizal fungi constitute an important component of forest ecosystems that enhances plant nutrition and resistance against stresses. Diversity of ectomycorrhizal (EcM) fungi is, however, affected by host plant diversity and soil heterogeneity. This study provides information about the influence of host plants and soil resources on the diversity of ectomycorrhizal fungal fruiting bodies from rainforests of the Democratic Republic of the Congo. Based on the presence of fungal fruiting bodies, significant differences in the number of ectomycorrhizal fungi species existed between forest stand types (p < 0.001). The most ectomycorrhizal species‐rich forest was the Gilbertiodendron dewevrei‐dominated forest (61 species). Of all 93 species of ectomycorrhizal fungi, 19 demonstrated a significant indicator value for particular forest stand types. Of all analysed edaphic factors, the percentage of silt particles was the most important parameter influencing EcM fungi host plant tree ...

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Research paper thumbnail of Selection of bean lines tolerant to low soil fertility conditions in Africa

BEAN IMPROVEMENT …, 2002

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Selection of bean lines tolerant to low soil fertility conditions in Africa

BEAN IMPROVEMENT …, 2002

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Maize‐Nutrient Response Functions for Eastern and Southern Africa

Agronomy Journal, 2018

Core Ideas Mean maize response to N is similar in Kenya, Tanzania, and Rwanda. Maize is relativel... more Core Ideas Mean maize response to N is similar in Kenya, Tanzania, and Rwanda. Maize is relatively more responsive to nitrogen in Malawi and Rwanda. Maize is responsive to phosphorus and potassium in Rwanda. There is little potential for profitable response to phosphorus and potassium in most areas of East Africa. Maize response to Mg–S–Zn–B needs more investigation in Rwanda. Information is scarce for maize (Zea mays L.) response to nutrient application for many production areas in tropical Africa. Research was conducted to determine macronutrient response functions and to diagnose Mg–S–Zn–B deficiencies. Site–year × N‐rate interactions within countries often accounted for little variation in yield relative to the N‐rate effect. Country mean grain yield responses to N‐rate were curvilinear to plateau, but linear in Malawi. Although mean yields differed, the response to N was similar for Kenya, Tanzania, and Zambia with a mean yield increase of 0.94 Mg ha−1 due to 50 kg ha−1 N compa...

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Research paper thumbnail of T4FS project Ethiopia Baseline Survey.xlsx

Baseline Data that was collected in Ethiopia.

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Research paper thumbnail of LDSF_FieldForm_2013.pdf

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Alem Tena Infilitration.xlsx

Baseline data

Bookmarks Related papers MentionsView impact