Ibrahim Ahmed Kawu - Academia.edu (original) (raw)
Papers by Ibrahim Ahmed Kawu
... References 1. Quddus, KG and Zaman, MH (1996). Irrigation water quality in some selected vill... more ... References 1. Quddus, KG and Zaman, MH (1996). Irrigation water quality in some selected villages of Meherpur in Bangladesh. Journal ... irrigation. Journal of agric and environment (1):1 120-128 4. Ibrahim, AK, and Usman, A. (2011b). ...
Asian Journal of Agriculture and Food Sciences, Dec 12, 2013
A study was conducted to evaluate extractable micronutrient (Fe, Cu, Zn and Mn) status and their ... more A study was conducted to evaluate extractable micronutrient (Fe, Cu, Zn and Mn) status and their relationship with soil properties in Yamaltu-Deba Local Government Area of Gombe State, Nigeria. Fifty five (55) composite soil samples were collected at 0 to 30 cm depth and analyzed for physico-chemical properties and status of extractable micronutrients. Results indicate that the soils were dominantly Clay loam, pH were slightly to moderately acidic (pH = 5.9-6.7) low in organic carbon (mean = 7.6 gkg-1) and high in CEC (mean = 13 cmolkg-1). Extractable Fe, Cu, Zn and Mn (in mgkg-1) were 13.1 to 19.7 (mean = 16.3), 0.19 to 0.33 (mean = 0.26), 0.49 to 0.93 (mean = 0.72), and 18.9 to 29.8 (mean = 27.4), respectively. Further, Fe showed positive correlation with clay and CEC but negative correlation with pH, silt and Oc. Mn also showed positive correlation with silt but negative correlation with pH, clay, CEC and Oc. Cu showed positive correlation with pH, silt, CEC and Oc and negative correlation with clay. Zn also followed the same trend as that of Cu with pH, silt, CEC and Oc and negative correlation with clay. The extractable Fe and Mn contents were above the critical limits for crop production in all the locations. Copper and Zinc were low in some places and their application are recommended for successful crop production in the area.
Asian Journal of Soil Science and Plant Nutrition, 2018
A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of ... more A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of the Leventist Farm, Tumu Akko local Government area, Gombe State, to evaluate the effect of incorporated legumes and nitrogen levels on yield and yield attributes of maize. The treatments consist of four legumes crops (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) with three replicates. The results of the experiment revealed that, growing maize on lablab plots had significant (P≤0.05) effect on all the characters measured than other treatments. The results further revealed that, application of nitrogen fertilizer at the rate of 60kgN/ha gave significantly (P≤0.05) higher effects on all the characters studied than when the other rates were used. Control plots on the other hand recorded the least.The results indicated that maximum cob yield (3280 kg ha-1), stover yield (2115 kg ha-1), and grain yield (2359 kg ha-1) of maize were obtained with plots incorporated with lablab combined with 60 kg N ha-1 respectively. Studies on interaction revealed that, combined application of lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum grain yield. The combination saves 60 kg NPK ha-1 when
Journal of Experimental Agriculture International, 2017
Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticul... more Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticulture Bagauda, Kano and Federal College of Horticulture Research and Training Farm Dadinkowa, Gombe State. The experiment investigated the effect of NPK fertilizer application rates and intra-row spacing on yield of radish (Raphanus sativus L.). The treatments were six level of NPK fertilizer (0, 40, 80, 120, 160 and 200 kg/ha) and three levels of spacing (10, 15 and 20 cm). The treatments were laid down in a randomized complete block design (RCBD). Yield and yield components were measured and data were analyzed using ANOVA. Intra-row spacing significantly affected root diameter and root length. The result of the study indicated that increasing level of NPK fertilizer from 0 to 200 kg/ha increased significantly yield components. Increasing intra-row spacing
Nigerian journal of soil and environmental research, 2021
Nigerian journal of soil and environmental research, 2021
Nigerian journal of soil and environmental research, 2021
Quality of water is a prerequisite for the success of an irrigation project. With this view, an e... more Quality of water is a prerequisite for the success of an irrigation project. With this view, an effort was made to assess the groundwater quality of a hydrological basin in Nafada. Common problems for poor quality parameter indices determined were precisely evaluated and interpreted. Water sample were collected randomly from eighteen tube wells in the peak dry season (January to April 2011). The analysis reveals that the compositions of the groundwater samples were within the permissible range of irrigation use. Standard water quality parameters in dices like pH (6.8-8.5) showed slightly acidic to alkaline; the TDS was rated as 'fresh water'. ECw and SAR were 'low' and 'medium salinity' (C1 and C2) classes and 'low alkali hazard' (S1) class, combinedly expressed as C1S1 and C2S1. SSP was of 'Good' and 'permissible' categories. However, samples are free from RSC and belonged to suitable category for irrigation. Moreover, except minor discrepancies the groundwater of the study area was categorized as excellent to Good quality and seemed to be suitable for crop production.
The physico-chemical properties of the Fadama soils of Kwadan in Yamalt/ Deba Local Government Ar... more The physico-chemical properties of the Fadama soils of Kwadan in Yamalt/ Deba Local Government Area of Gombe State, Nigeria were investigated. 24 composite soil samples were randomly collected at 0-15 cm and 15-30 cnm depth in four sections of the Fadama and subjected to laboratory analysis using standard procedure. The results revealed that soil texture was generally clay loam and the soil p" was slightly acidic. The organic carbon and total nitrogen content were low, while the available phosphorus, exchangeable bases and cation exchange capacity (CEC) were rated medium to high. However, the soils have low electrical conductivity (50-160 uS.cm) and exchangeable sodiun percentage (0.5-6.0%). The soil was found to be free from salinity/ sodicity problem. Application of organic manures complemented with organic fertilizers at appropriate levels will improve crop production.
A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of ... more A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of the Leventist Farm, Tumu Akko local Government area, Gombe State, to evaluate the effect of incorporated legumes and nitrogen levels on yield and yield attributes of maize. The treatments consist of four legumes crops (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) with three replicates. The results of the experiment revealed that, growing maize on lablab plots had significant (P≤0.05) effect on all the characters measured than other treatments. The results further revealed that, application of nitrogen fertilizer at the rate of 60kgN/ha gave significantly (P≤0.05) higher effects on all the characters studied than when the other rates were used. Control plots on the other hand recorded the least.The results indicated that maximum cob yield (3280 kg ha-1), stover yield (2115 kg ha-1), and grain yield (2359 kg ha-1) of maize were obtained with plots incorporated with lablab combined with 60 kg N ha-1 respectively. Studies on interaction revealed that, combined application of lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum grain yield. The combination saves 60 kg NPK ha-1 when
This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact... more This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact of land uses on concentration of heavy metals (Cd, Cr, Cu and Pb) in soils and their uptake by plant. Soil samples were collected at 0-30 cm depths from arable, Fadama, forest and grazing lands and analyzed. The results showed that the mean concentration range of metals for all land use types were 0.14±0.01 to 0.22±0.01 Cu 2+ and 0.15±0.24 to 1.77±0.24 Pb in soil samples and were all found to be below the Department of Petroleum Resources standards (DPR, 2002) while the values recorded in plants ranged from 0.14±0.01 to 0.25±0.01 Cu and 0.57±0.24 to 1.77±0.24 Pb and all found to be below the NAFDAC permissible limits of these metals in plants for all the land use types. However, Cd and Cr were not detected in all the land use studied. The values of transfer factor obtained from this study were in the following order: Pb > Cu > Cd: Cr. The TF values of studied heavy metals in all the studied sites were found to be < 1, thus there is possibility that soil is the main source of metal bioaccumulation in plants.
The research was conducted at Hinna research and training farm of the Federal College of Horticul... more The research was conducted at Hinna research and training farm of the Federal College of Horticulture Dadin kowa, ombe State. The intiuence of seed treatments on the germination and early growth of Carica Papaya were studied in 012. The experiment was laid out in Completely Randomized Design (CRD) with four treatments replicated tour t er of 0.8 ton ha of top soil, cowdung 0.3 ton ha mixed with river sand and river sand only serving as control were rate oplied to the poting mixtureS in equal proportion (1:1:1). The treatments consisted of seeds with removed sarcotes seeds soaked in KN03 (a) 30 ppm (0.03 g) for 6hrs, seeds soaked in cold water overnight and untreated seeds serving as control. Growth parameters Such as plant heights, collar girths and leaf counts were measured for 12 weeks. Ihe resUIS shows that Priming papaya seeds in 1 litre of distilled water with 0.03 grams of KNO3 for 6hrs caused the seed to germinate in bdays and has the highest germination rate of 87.5%. The results also revealed that priming the seeds wn KNO3 (a) for 6hrs had the highest mean height of 42.2 cm, collar girth 4.0 cm and leaf count of 48 compared with the otner treatments. Ihis result indicated that soaking papaya seedsin Potassium Nitrate (KNO3) solution (0.03 g) in a distilled water for 6hrs should be adopted for enhancing germination and early growth of Carica Papaya L. For raising its seediings in mass production by the farmers, researchers and orchardists.
Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticul... more Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticulture Bagauda, Kano and Federal College of Horticulture Research and Training Farm Dadinkowa, Gombe State. The experiment investigated the effect of NPK fertilizer application rates and intra-row spacing on yield of radish (Raphanus sativus L.). The treatments were six level of NPK fertilizer (0, 40, 80, 120, 160 and 200 kg/ha) and three levels of spacing (10, 15 and 20 cm). The treatments were laid down in a randomized complete block design (RCBD). Yield and yield components were measured and data were analyzed using ANOVA. Intra-row spacing significantly affected root diameter and root length. The result of the study indicated that increasing level of NPK fertilizer from 0 to 200 kg/ha increased significantly yield components. Increasing intra-row spacing
Declining crops yield in the smallholder farmers cropping systems present the need to develop eff... more Declining crops yield in the smallholder farmers cropping systems present the need to develop efficient and more sustainable production systems in the study area. Depletion of essential plant nutrients from the soils have been identified as the major contributing factors due to continues cultivation of cereal crops without application of organic/ inorganic fertilizers.
This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact... more This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact of land uses on concentration of heavy metals (Cd, Cr, Cu and Pb) in soils and their uptake by plant. Soil samples were collected at 0-30 cm depths from arable, Fadama, forest and grazing lands and analyzed. The results showed that the mean concentration range of metals for all land use types were 0.14±0.01 to 0.22±0.01 Cu 2+ and 0.15±0.24 to 1.77±0.24 Pb in soil samples and were all found to be below the Department of Petroleum Resources standards (DPR, 2002) while the values recorded in plants ranged from 0.14±0.01 to 0.25±0.01 Cu and 0.57±0.24 to 1.77±0.24 Pb and all found to be below the NAFDAC permissible limits of these metals in plants for all the land use types. However, Cd and Cr were not detected in all the land use studied. The values of transfer factor obtained from this study were in the following order: Pb > Cu > Cd: Cr. The TF values of studied heavy metals in all the studied sites were found to be < 1, thus there is possibility that soil is the main source of metal bioaccumulation in plants.
International Journal of Archaeology
Thesis Chapters by Ibrahim Ahmed Kawu
Ife journal of agriculture, 2023
The treatments consisted of four green manure sources (Centrosema, Lablab, Mucuna, Sesbania and c... more The treatments consisted of four green manure sources (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Data were collected on: plant height, number of leaves and stem girth. Data collected were subjected to Analysis of Variance (ANOVA). Means were separated using Duncan Multiple Range Test (DMRT) at 5% probability level. Results of the experiment revealed that the incorporation of Lablab significantly increased plant height; number of leaves and stem girth in all the sampling stages. Application of 60 kg NPK ha-1 gave a significant (P<0.05) increase in plant height (144.9 cm), number of leaves (11.7) and stem girth (6.4 cm) in all the sampling stages. However, further increase in NPK level from 60 kg NPK ha-1 upward had no significant effect on plant height; number of leaves and stem girth per plant. Interactions between green manure and NPK levels revealed that, incorporation of Lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum plant growth. Based on the results obtained, application of 60 kg ha-1 N as top dress to maize grown on Lablab residue plots should be adopted by farmers in and around the study area for increased growth parameters.
... References 1. Quddus, KG and Zaman, MH (1996). Irrigation water quality in some selected vill... more ... References 1. Quddus, KG and Zaman, MH (1996). Irrigation water quality in some selected villages of Meherpur in Bangladesh. Journal ... irrigation. Journal of agric and environment (1):1 120-128 4. Ibrahim, AK, and Usman, A. (2011b). ...
Asian Journal of Agriculture and Food Sciences, Dec 12, 2013
A study was conducted to evaluate extractable micronutrient (Fe, Cu, Zn and Mn) status and their ... more A study was conducted to evaluate extractable micronutrient (Fe, Cu, Zn and Mn) status and their relationship with soil properties in Yamaltu-Deba Local Government Area of Gombe State, Nigeria. Fifty five (55) composite soil samples were collected at 0 to 30 cm depth and analyzed for physico-chemical properties and status of extractable micronutrients. Results indicate that the soils were dominantly Clay loam, pH were slightly to moderately acidic (pH = 5.9-6.7) low in organic carbon (mean = 7.6 gkg-1) and high in CEC (mean = 13 cmolkg-1). Extractable Fe, Cu, Zn and Mn (in mgkg-1) were 13.1 to 19.7 (mean = 16.3), 0.19 to 0.33 (mean = 0.26), 0.49 to 0.93 (mean = 0.72), and 18.9 to 29.8 (mean = 27.4), respectively. Further, Fe showed positive correlation with clay and CEC but negative correlation with pH, silt and Oc. Mn also showed positive correlation with silt but negative correlation with pH, clay, CEC and Oc. Cu showed positive correlation with pH, silt, CEC and Oc and negative correlation with clay. Zn also followed the same trend as that of Cu with pH, silt, CEC and Oc and negative correlation with clay. The extractable Fe and Mn contents were above the critical limits for crop production in all the locations. Copper and Zinc were low in some places and their application are recommended for successful crop production in the area.
Asian Journal of Soil Science and Plant Nutrition, 2018
A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of ... more A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of the Leventist Farm, Tumu Akko local Government area, Gombe State, to evaluate the effect of incorporated legumes and nitrogen levels on yield and yield attributes of maize. The treatments consist of four legumes crops (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) with three replicates. The results of the experiment revealed that, growing maize on lablab plots had significant (P≤0.05) effect on all the characters measured than other treatments. The results further revealed that, application of nitrogen fertilizer at the rate of 60kgN/ha gave significantly (P≤0.05) higher effects on all the characters studied than when the other rates were used. Control plots on the other hand recorded the least.The results indicated that maximum cob yield (3280 kg ha-1), stover yield (2115 kg ha-1), and grain yield (2359 kg ha-1) of maize were obtained with plots incorporated with lablab combined with 60 kg N ha-1 respectively. Studies on interaction revealed that, combined application of lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum grain yield. The combination saves 60 kg NPK ha-1 when
Journal of Experimental Agriculture International, 2017
Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticul... more Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticulture Bagauda, Kano and Federal College of Horticulture Research and Training Farm Dadinkowa, Gombe State. The experiment investigated the effect of NPK fertilizer application rates and intra-row spacing on yield of radish (Raphanus sativus L.). The treatments were six level of NPK fertilizer (0, 40, 80, 120, 160 and 200 kg/ha) and three levels of spacing (10, 15 and 20 cm). The treatments were laid down in a randomized complete block design (RCBD). Yield and yield components were measured and data were analyzed using ANOVA. Intra-row spacing significantly affected root diameter and root length. The result of the study indicated that increasing level of NPK fertilizer from 0 to 200 kg/ha increased significantly yield components. Increasing intra-row spacing
Nigerian journal of soil and environmental research, 2021
Nigerian journal of soil and environmental research, 2021
Nigerian journal of soil and environmental research, 2021
Quality of water is a prerequisite for the success of an irrigation project. With this view, an e... more Quality of water is a prerequisite for the success of an irrigation project. With this view, an effort was made to assess the groundwater quality of a hydrological basin in Nafada. Common problems for poor quality parameter indices determined were precisely evaluated and interpreted. Water sample were collected randomly from eighteen tube wells in the peak dry season (January to April 2011). The analysis reveals that the compositions of the groundwater samples were within the permissible range of irrigation use. Standard water quality parameters in dices like pH (6.8-8.5) showed slightly acidic to alkaline; the TDS was rated as 'fresh water'. ECw and SAR were 'low' and 'medium salinity' (C1 and C2) classes and 'low alkali hazard' (S1) class, combinedly expressed as C1S1 and C2S1. SSP was of 'Good' and 'permissible' categories. However, samples are free from RSC and belonged to suitable category for irrigation. Moreover, except minor discrepancies the groundwater of the study area was categorized as excellent to Good quality and seemed to be suitable for crop production.
The physico-chemical properties of the Fadama soils of Kwadan in Yamalt/ Deba Local Government Ar... more The physico-chemical properties of the Fadama soils of Kwadan in Yamalt/ Deba Local Government Area of Gombe State, Nigeria were investigated. 24 composite soil samples were randomly collected at 0-15 cm and 15-30 cnm depth in four sections of the Fadama and subjected to laboratory analysis using standard procedure. The results revealed that soil texture was generally clay loam and the soil p" was slightly acidic. The organic carbon and total nitrogen content were low, while the available phosphorus, exchangeable bases and cation exchange capacity (CEC) were rated medium to high. However, the soils have low electrical conductivity (50-160 uS.cm) and exchangeable sodiun percentage (0.5-6.0%). The soil was found to be free from salinity/ sodicity problem. Application of organic manures complemented with organic fertilizers at appropriate levels will improve crop production.
A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of ... more A Field experiments were conducted from 2015 to 2016 wet seasons at the Teaching and Research of the Leventist Farm, Tumu Akko local Government area, Gombe State, to evaluate the effect of incorporated legumes and nitrogen levels on yield and yield attributes of maize. The treatments consist of four legumes crops (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) with three replicates. The results of the experiment revealed that, growing maize on lablab plots had significant (P≤0.05) effect on all the characters measured than other treatments. The results further revealed that, application of nitrogen fertilizer at the rate of 60kgN/ha gave significantly (P≤0.05) higher effects on all the characters studied than when the other rates were used. Control plots on the other hand recorded the least.The results indicated that maximum cob yield (3280 kg ha-1), stover yield (2115 kg ha-1), and grain yield (2359 kg ha-1) of maize were obtained with plots incorporated with lablab combined with 60 kg N ha-1 respectively. Studies on interaction revealed that, combined application of lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum grain yield. The combination saves 60 kg NPK ha-1 when
This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact... more This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact of land uses on concentration of heavy metals (Cd, Cr, Cu and Pb) in soils and their uptake by plant. Soil samples were collected at 0-30 cm depths from arable, Fadama, forest and grazing lands and analyzed. The results showed that the mean concentration range of metals for all land use types were 0.14±0.01 to 0.22±0.01 Cu 2+ and 0.15±0.24 to 1.77±0.24 Pb in soil samples and were all found to be below the Department of Petroleum Resources standards (DPR, 2002) while the values recorded in plants ranged from 0.14±0.01 to 0.25±0.01 Cu and 0.57±0.24 to 1.77±0.24 Pb and all found to be below the NAFDAC permissible limits of these metals in plants for all the land use types. However, Cd and Cr were not detected in all the land use studied. The values of transfer factor obtained from this study were in the following order: Pb > Cu > Cd: Cr. The TF values of studied heavy metals in all the studied sites were found to be < 1, thus there is possibility that soil is the main source of metal bioaccumulation in plants.
The research was conducted at Hinna research and training farm of the Federal College of Horticul... more The research was conducted at Hinna research and training farm of the Federal College of Horticulture Dadin kowa, ombe State. The intiuence of seed treatments on the germination and early growth of Carica Papaya were studied in 012. The experiment was laid out in Completely Randomized Design (CRD) with four treatments replicated tour t er of 0.8 ton ha of top soil, cowdung 0.3 ton ha mixed with river sand and river sand only serving as control were rate oplied to the poting mixtureS in equal proportion (1:1:1). The treatments consisted of seeds with removed sarcotes seeds soaked in KN03 (a) 30 ppm (0.03 g) for 6hrs, seeds soaked in cold water overnight and untreated seeds serving as control. Growth parameters Such as plant heights, collar girths and leaf counts were measured for 12 weeks. Ihe resUIS shows that Priming papaya seeds in 1 litre of distilled water with 0.03 grams of KNO3 for 6hrs caused the seed to germinate in bdays and has the highest germination rate of 87.5%. The results also revealed that priming the seeds wn KNO3 (a) for 6hrs had the highest mean height of 42.2 cm, collar girth 4.0 cm and leaf count of 48 compared with the otner treatments. Ihis result indicated that soaking papaya seedsin Potassium Nitrate (KNO3) solution (0.03 g) in a distilled water for 6hrs should be adopted for enhancing germination and early growth of Carica Papaya L. For raising its seediings in mass production by the farmers, researchers and orchardists.
Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticul... more Field experiments were conducted during 2013 rainy season at the Kano State Institute of Horticulture Bagauda, Kano and Federal College of Horticulture Research and Training Farm Dadinkowa, Gombe State. The experiment investigated the effect of NPK fertilizer application rates and intra-row spacing on yield of radish (Raphanus sativus L.). The treatments were six level of NPK fertilizer (0, 40, 80, 120, 160 and 200 kg/ha) and three levels of spacing (10, 15 and 20 cm). The treatments were laid down in a randomized complete block design (RCBD). Yield and yield components were measured and data were analyzed using ANOVA. Intra-row spacing significantly affected root diameter and root length. The result of the study indicated that increasing level of NPK fertilizer from 0 to 200 kg/ha increased significantly yield components. Increasing intra-row spacing
Declining crops yield in the smallholder farmers cropping systems present the need to develop eff... more Declining crops yield in the smallholder farmers cropping systems present the need to develop efficient and more sustainable production systems in the study area. Depletion of essential plant nutrients from the soils have been identified as the major contributing factors due to continues cultivation of cereal crops without application of organic/ inorganic fertilizers.
This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact... more This study was conducted in Kashere Area Akko LGA of Gombe State, Nigeria to evaluates the impact of land uses on concentration of heavy metals (Cd, Cr, Cu and Pb) in soils and their uptake by plant. Soil samples were collected at 0-30 cm depths from arable, Fadama, forest and grazing lands and analyzed. The results showed that the mean concentration range of metals for all land use types were 0.14±0.01 to 0.22±0.01 Cu 2+ and 0.15±0.24 to 1.77±0.24 Pb in soil samples and were all found to be below the Department of Petroleum Resources standards (DPR, 2002) while the values recorded in plants ranged from 0.14±0.01 to 0.25±0.01 Cu and 0.57±0.24 to 1.77±0.24 Pb and all found to be below the NAFDAC permissible limits of these metals in plants for all the land use types. However, Cd and Cr were not detected in all the land use studied. The values of transfer factor obtained from this study were in the following order: Pb > Cu > Cd: Cr. The TF values of studied heavy metals in all the studied sites were found to be < 1, thus there is possibility that soil is the main source of metal bioaccumulation in plants.
International Journal of Archaeology
Ife journal of agriculture, 2023
The treatments consisted of four green manure sources (Centrosema, Lablab, Mucuna, Sesbania and c... more The treatments consisted of four green manure sources (Centrosema, Lablab, Mucuna, Sesbania and control) and NPK fertilizer (0, 60 and 120 kg ha-1) laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Data were collected on: plant height, number of leaves and stem girth. Data collected were subjected to Analysis of Variance (ANOVA). Means were separated using Duncan Multiple Range Test (DMRT) at 5% probability level. Results of the experiment revealed that the incorporation of Lablab significantly increased plant height; number of leaves and stem girth in all the sampling stages. Application of 60 kg NPK ha-1 gave a significant (P<0.05) increase in plant height (144.9 cm), number of leaves (11.7) and stem girth (6.4 cm) in all the sampling stages. However, further increase in NPK level from 60 kg NPK ha-1 upward had no significant effect on plant height; number of leaves and stem girth per plant. Interactions between green manure and NPK levels revealed that, incorporation of Lablab green manure and 60 kg NPK ha-1 , are the most viable combinations for maximum plant growth. Based on the results obtained, application of 60 kg ha-1 N as top dress to maize grown on Lablab residue plots should be adopted by farmers in and around the study area for increased growth parameters.