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We investigated the root microbiomes of rice sampled from six major rice-producing regions in Ghana using Illumina MiSeq high-throughput amplicon sequencing analysis. The result showed that both bacterial and fungal community compositions were significantly varied across the regions. Bacterial communities were shaped predominantly by biotic factors, including root fungal diversity and abundance. In contrast, fungal communities were influenced by abiotic factors such as soil nitrate, total carbon and soil pH. A negative correlation between the diversity and abundance of root fungi with soil nitrate (NO3-) level was observed. It suggested that there were direct and indirect effects of NO3- on the root-associated bacterial and fungal community composition. The gradient of soil nitrate from North to South parts of Ghana may influence the composition of rice root microbiome. Bacterial community composition was shaped by fungal diversity and abundance; whereas fungal community composition was shaped by bacterial abundance. It suggested the mutualistic interaction of bacteria and fungi at the community level in the rice root microbiome. Specific bacterial and fungal taxa were detected abundantly in the ‘Northern’ regions of Ghana, which were very low or absent from the samples of other regions. The analysis of indicator species suggested that an ‘ecological specialization’ may have occurred which enabled specific microbial taxa to adapt to the local environment, such as the low-nitrate condition in the Northern regions.
Makoto Kanasugi; Elsie Sarkodee-Addo; Richard Ansong Omari; Khondoker Mohammad Golam Dastogeer; Yoshiharu Fujii; Samuel Oppong Abebrese; Ralph Bam; Stella Asuming-Brempong; Shin Okazaki. Exploring Rice Root Microbiome; The Variation, Specialization and Interaction of Bacteria and Fungi In Six Tropic Savanna Regions in Ghana. Sustainability 2020, 12, 5835 .
AMA StyleMakoto Kanasugi, Elsie Sarkodee-Addo, Richard Ansong Omari, Khondoker Mohammad Golam Dastogeer, Yoshiharu Fujii, Samuel Oppong Abebrese, Ralph Bam, Stella Asuming-Brempong, Shin Okazaki. Exploring Rice Root Microbiome; The Variation, Specialization and Interaction of Bacteria and Fungi In Six Tropic Savanna Regions in Ghana. Sustainability. 2020; 12 (14):5835.
Chicago/Turabian StyleMakoto Kanasugi; Elsie Sarkodee-Addo; Richard Ansong Omari; Khondoker Mohammad Golam Dastogeer; Yoshiharu Fujii; Samuel Oppong Abebrese; Ralph Bam; Stella Asuming-Brempong; Shin Okazaki. 2020. "Exploring Rice Root Microbiome; The Variation, Specialization and Interaction of Bacteria and Fungi In Six Tropic Savanna Regions in Ghana." Sustainability 12, no. 14: 5835.
Understanding the community composition and diversity of arbuscular mycorrhizal fungi (AMF) in an agricultural ecosystem is important for exploiting their potential in sustainable crop production. In this study, we described the genetic diversity and community structure of indigenous AMF in rain-fed rice cultivars across six different regions in Ghana. The morphological and molecular analyses revealed a total of 15 different AMF genera isolated from rice roots. Rhizophagus and Glomus were observed to be predominant in all regions except the Ashanti region, which was dominated by the genera Scutellospora and Acaulospora. A comparison of AMF diversity among the agroecological zones revealed that Guinea Savannah had the highest diversity. Permutational Multivariate Analysis of Variance (PERMANOVA) analysis indicated that the available phosphorus (AP) in the soil was the principal determining factor for shaping the AMF community structure (p < 0.05). We report, for the first time, AMF diversity and community structure in rice roots and how communities are affected by the chemical properties of soil from different locations in Ghana.
Elsie Sarkodee-Addo; Michiko Yasuda; Chol Gyu Lee; Makoto Kanasugi; Yoshiharu Fujii; Richard Ansong Omari; Samuel Oppong Abebrese; Ralph Bam; Stella Asuming-Brempong; Khondoker Mohammad Golam Dastogeer; Shin Okazaki. Arbuscular Mycorrhizal Fungi Associated with Rice (Oryza sativa L.) in Ghana: Effect of Regional Locations and Soil Factors on Diversity and Community Assembly. Agronomy 2020, 10, 559 .
AMA StyleElsie Sarkodee-Addo, Michiko Yasuda, Chol Gyu Lee, Makoto Kanasugi, Yoshiharu Fujii, Richard Ansong Omari, Samuel Oppong Abebrese, Ralph Bam, Stella Asuming-Brempong, Khondoker Mohammad Golam Dastogeer, Shin Okazaki. Arbuscular Mycorrhizal Fungi Associated with Rice (Oryza sativa L.) in Ghana: Effect of Regional Locations and Soil Factors on Diversity and Community Assembly. Agronomy. 2020; 10 (4):559.
Chicago/Turabian StyleElsie Sarkodee-Addo; Michiko Yasuda; Chol Gyu Lee; Makoto Kanasugi; Yoshiharu Fujii; Richard Ansong Omari; Samuel Oppong Abebrese; Ralph Bam; Stella Asuming-Brempong; Khondoker Mohammad Golam Dastogeer; Shin Okazaki. 2020. "Arbuscular Mycorrhizal Fungi Associated with Rice (Oryza sativa L.) in Ghana: Effect of Regional Locations and Soil Factors on Diversity and Community Assembly." Agronomy 10, no. 4: 559.
Radioactive cesium (137Cs) in distinct soil fractions provides key information to its bioavailability, and therefore determining the effect of soil characteristics and land use types on existing fractions of 137Cs in soils is important for predicting future 137Cs mobility in Fukushima. Thus, the objective of this study was to investigate the influence of soil characteristics and land use types on sequentially extracted fractions of 137Cs in Fukushima. In this study, five coniferous forest soils, eight arable soils, and eight paddy rice soils were sampled in 2012 and 2013. The 137Cs in the soils were separated into four fractions; water-soluble, exchangeable, organic matter-bound and residual fractions. More than 90% of the soil 137Cs fraction for arable and paddy rice soils was found in the residual fraction, implying significantly reduced bioavailable 137Cs with higher fixation. In contrast, forest soils measured higher exchangeable and organic matter-bound fractions of 5%–33% and 9%–44%, respectively, implying future 137Cs mobility in the forest ecosystem. Correlation analysis showed a significant negative correlation (p < 0.05) between the organic matter fraction and residual fraction in both arable and paddy rice soils. There was a significant positive correlation (p < 0.05) for both exchangeable and residual fractions with cation exchange capacity (CEC), total carbon (TC) and total nitrogen (TN) values in arable soils. Organic matter content influenced both exchangeable and residual fractions. It was not clear whether organic matter played a direct role in 137Cs fixation or mobility in the agricultural soils. In paddy rice soils, the organic matter fraction showed a significant negative correlation with TC and TN values. Soil pH was significantly negatively correlated (p < 0.05) with both water-soluble and residual fractions in forest soils but positively (p < 0.1) with the organically bound 137Cs fraction.
Akwasi Dwira Mensah; Akimi Terasaki; Han Phyo Aung; Hiroto Toda; Sohzoh Suzuki; Haruo Tanaka; Siaw Onwona-Agyeman; Richard Ansong Omari; Sonoko Dorothea Bellingrath-Kimura. Influence of Soil Characteristics and Land Use Type on Existing Fractions of Radioactive 137Cs in Fukushima Soils. Environments 2020, 7, 16 .
AMA StyleAkwasi Dwira Mensah, Akimi Terasaki, Han Phyo Aung, Hiroto Toda, Sohzoh Suzuki, Haruo Tanaka, Siaw Onwona-Agyeman, Richard Ansong Omari, Sonoko Dorothea Bellingrath-Kimura. Influence of Soil Characteristics and Land Use Type on Existing Fractions of Radioactive 137Cs in Fukushima Soils. Environments. 2020; 7 (2):16.
Chicago/Turabian StyleAkwasi Dwira Mensah; Akimi Terasaki; Han Phyo Aung; Hiroto Toda; Sohzoh Suzuki; Haruo Tanaka; Siaw Onwona-Agyeman; Richard Ansong Omari; Sonoko Dorothea Bellingrath-Kimura. 2020. "Influence of Soil Characteristics and Land Use Type on Existing Fractions of Radioactive 137Cs in Fukushima Soils." Environments 7, no. 2: 16.
To investigate the interrelationships among biochar, soil nutrients, and soybean plant growth in more detail, the root nodulation response of soybean (Glycine max L.) to biochar application was analyzed in a field study. We further examined the biochar effect on soil phosphatase activity to elucidate the relationships among biochar, phosphatase activity, and plant phosphorus uptake. Soybean was planted in a sandy field wherein the biochar and irrigation conditions were considered the two treatment factors. In our result, irrigation increased the pod number and plant height by 20.7% and 11.1%, respectively. Irrigation reduced the shoot and root dry matter content by 67.9% and 75.1%, respectively. The nodule number increased by 37% due to biochar addition under irrigated conditions. The soil carbon concentration was elevated by 13.4% with biochar application under rainfed conditions. Acid phosphomonoesterase (APM) was increased by 21.8% in the biochar-incorporated plots under the irrigated condition. Principal component analysis and redundancy analysis suggested that biochar application enhanced the relationships between the nodule number and soil potassium and magnesium concentrations. The correlation between soil sulfur content and nodule number was eliminated by biochar application. APM activity was associated with higher shoot and root phosphorus content and shoot dry weight after biochar application.
Hua Ma; Dilfuza Egamberdieva; Stephan Wirth; Qirui Li; Richard Ansong Omari; MuDan Hou; Sonoko D. Bellingrath-Kimura. Effect of Biochar and Irrigation on the Interrelationships among Soybean Growth, Root Nodulation, Plant P Uptake, and Soil Nutrients in a Sandy Field. Sustainability 2019, 11, 6542 .
AMA StyleHua Ma, Dilfuza Egamberdieva, Stephan Wirth, Qirui Li, Richard Ansong Omari, MuDan Hou, Sonoko D. Bellingrath-Kimura. Effect of Biochar and Irrigation on the Interrelationships among Soybean Growth, Root Nodulation, Plant P Uptake, and Soil Nutrients in a Sandy Field. Sustainability. 2019; 11 (23):6542.
Chicago/Turabian StyleHua Ma; Dilfuza Egamberdieva; Stephan Wirth; Qirui Li; Richard Ansong Omari; MuDan Hou; Sonoko D. Bellingrath-Kimura. 2019. "Effect of Biochar and Irrigation on the Interrelationships among Soybean Growth, Root Nodulation, Plant P Uptake, and Soil Nutrients in a Sandy Field." Sustainability 11, no. 23: 6542.
Background: The in-depth traditional knowledge of medicinal plants is at risk of extinction due to the dependency on oral transmission, and as such, there is an urgent need to document such knowledge. This study aimed to document indigenous uses of medicinal plants among community members in the Ejisu-Juaben Municipality. Methods: Data was collected in 2016 from community members and local herbalists in the Ejisu-Juaben Municipality through a semi-structured questionnaire. Statistical tools and ethnobotanical indices, i.e., informant consensus factor (ICF), fidelity level (FL), and use value (UV) were used to analyse the data. Results: One hundred and six medicinal plants belonging to 45 families were reported to cure 68 different human diseases. The most frequently used plant part in this study was the leaves (52%). Decoction (57.5%) and oral administration (58.3%) were the most utilised herbal preparation and administration route respectively. Cleistopholis patens had the highest UV (0.54) with pain & fevers and skin diseases having the highest ICF values (0.88 and 0.85 respectively). Furthermore, new medicinal uses of Hilleria latifolia and ten other species were recorded for the treatment of the traditional local disease, aseram. Conclusions: The current knowledge and uses of medicinal plants are still high in the study area based on the high degree of consensus among informants. This study could allow for the preservation of knowledge and biodiversity of medicinal plants, both of which are threatened with extinction.
Kwame Sarpong Appiah; Clement Peprah Oppong; Hossein Korrani Mardani; Richard Ansong Omari; Sylvia Kpabitey; Christiana Adukwei Amoatey; Siaw Onwona-Agyeman; Yosei Oikawa; Keisuke Katsura; Yoshiharu Fujii. Medicinal Plants Used in the Ejisu-Juaben Municipality, Southern Ghana: An Ethnobotanical Study. Medicines 2018, 6, 1 .
AMA StyleKwame Sarpong Appiah, Clement Peprah Oppong, Hossein Korrani Mardani, Richard Ansong Omari, Sylvia Kpabitey, Christiana Adukwei Amoatey, Siaw Onwona-Agyeman, Yosei Oikawa, Keisuke Katsura, Yoshiharu Fujii. Medicinal Plants Used in the Ejisu-Juaben Municipality, Southern Ghana: An Ethnobotanical Study. Medicines. 2018; 6 (1):1.
Chicago/Turabian StyleKwame Sarpong Appiah; Clement Peprah Oppong; Hossein Korrani Mardani; Richard Ansong Omari; Sylvia Kpabitey; Christiana Adukwei Amoatey; Siaw Onwona-Agyeman; Yosei Oikawa; Keisuke Katsura; Yoshiharu Fujii. 2018. "Medicinal Plants Used in the Ejisu-Juaben Municipality, Southern Ghana: An Ethnobotanical Study." Medicines 6, no. 1: 1.
In a two-season study, six treatments comprising three organic resources (ORs) [Centrosema pubsecens (CENT), Crotalaria juncea (CROT), and Zea mays (MZE)], two conventional chemical fertilizer (CF) applications plus control were tested at Nyankpala (Guinea savannah) and Kade (Deciduous forest) to identify suitable conditions to optimize their effects on maize yield and soil chemical and microbial biomass. Aboveground biomasses of each OR were applied to respective plots at 4 Mg ha−1 season−1, followed by basal NPK 15:15:15 and subsequent topdressing with [(NH4)2SO4] at 40 kg ha−1 and 30 kg N ha−1, respectively. Maize yield response was significant in Nyankpala compared to Kade. Average maize grain yield increased from 1.2 to 1.7 t ha−1 at Nyankpala versus 1.1 to 1.4 t ha−1 at Kade. Additionally, MZE plus CF consistently showed high average grain yield at both sites. On average, agronomic N use efficiency (AEN) increased from 4.9 to 18.3 kg grain kg−1 N applied at Nyankpala against a reduction from 13.0 to 12.3 kg grain kg−1 N applied at Kade. Moreover, AEN increased with year of cultivation in the sole CF and MZE plus CF treatments. However, CROT plus CF treatment enhanced microbial biomass compared to sole CFs at both sites. Overall, while the effects of MZE with CF application on maize yield appeared suitable at both sites, inconsistent responses were observed in CENT and CROT amendments. We conclude that soil fertility and climate are essential variables in regulating the effects of OR and CF inputs on yield and AEN in maize production systems.
Richard Ansong Omari; Yoshiharu Fujii; Elsie Sarkodee-Addo; Yosei Oikawa; Siaw Onwona-Agyeman; Sonoko Dorothea Bellingrath-Kimura. Organic and chemical fertilizer input management on maize and soil productivity in two agro-ecological zones of Ghana. Environmental Sustainability 2018, 1, 437 -447.
AMA StyleRichard Ansong Omari, Yoshiharu Fujii, Elsie Sarkodee-Addo, Yosei Oikawa, Siaw Onwona-Agyeman, Sonoko Dorothea Bellingrath-Kimura. Organic and chemical fertilizer input management on maize and soil productivity in two agro-ecological zones of Ghana. Environmental Sustainability. 2018; 1 (4):437-447.
Chicago/Turabian StyleRichard Ansong Omari; Yoshiharu Fujii; Elsie Sarkodee-Addo; Yosei Oikawa; Siaw Onwona-Agyeman; Sonoko Dorothea Bellingrath-Kimura. 2018. "Organic and chemical fertilizer input management on maize and soil productivity in two agro-ecological zones of Ghana." Environmental Sustainability 1, no. 4: 437-447.
Weeds are rapidly developing resistance to synthetic herbicides, and this can pose a threat to the ecosystem. Exploring allelopathic species as an alternative weed control measure can help minimize the ecological threat posed by herbicide-resistant weeds. In this study, we aimed to evaluate the contribution of some polyphenols to the allelopathy of rosemary (Rosmarinus officinalis L.). The phytotoxic effects of rosemary (leaves, roots, inflorescences, and stems) crude extracts were tested on lettuce (Lactuca sativa L.). Soils incorporated with dried rosemary leaves were also tested on test plants. Reversed-phase high-performance liquid chromatography (HPLC) analysis was used to determine the content of some polyphenols (caffeic, ferulic, gallic, rosmarinic, carnosic, and chlorogenic acids) in rosemary. The specific activity and total activity of crude extracts and individual compounds were evaluated using lettuce. The crude extract of rosemary leaves showed the highest growth inhibitory effect among the rosemary organs tested. Soil amended with rosemary leaf debris reduced the dry matter and seed emergence of lettuce. Carnosic acid was the main compound detected in rosemary leaves and had a high specific activity when tested on lettuce. During the seed germination period, there was observed filter paper coloration among the test plants treated with carnosic acid (250 μg/mL). The high concentration and strong inhibitory effect of carnosic acid could explain the inhibitory activity of the rosemary leaf extract. Hence, we conclude based on the total activity estimation that carnosic acid among the other tested compounds is the major allelochemical in rosemary leaves.
Kwame Sarpong Appiah; Hossein Korrani Mardani; Richard Ansong Omari; Vincent Yao Eziah; John Ofosu-Anim; Siaw Onwona-Agyeman; Christiana Adukwei Amoatey; Kiyokazu Kawada; Keisuke Katsura; Yosei Oikawa; Yoshiharu Fujii. Involvement of Carnosic Acid in the Phytotoxicity of Rosmarinus officinalis Leaves. Toxins 2018, 10, 498 .
AMA StyleKwame Sarpong Appiah, Hossein Korrani Mardani, Richard Ansong Omari, Vincent Yao Eziah, John Ofosu-Anim, Siaw Onwona-Agyeman, Christiana Adukwei Amoatey, Kiyokazu Kawada, Keisuke Katsura, Yosei Oikawa, Yoshiharu Fujii. Involvement of Carnosic Acid in the Phytotoxicity of Rosmarinus officinalis Leaves. Toxins. 2018; 10 (12):498.
Chicago/Turabian StyleKwame Sarpong Appiah; Hossein Korrani Mardani; Richard Ansong Omari; Vincent Yao Eziah; John Ofosu-Anim; Siaw Onwona-Agyeman; Christiana Adukwei Amoatey; Kiyokazu Kawada; Keisuke Katsura; Yosei Oikawa; Yoshiharu Fujii. 2018. "Involvement of Carnosic Acid in the Phytotoxicity of Rosmarinus officinalis Leaves." Toxins 10, no. 12: 498.
The use of location-specific and underutilized organic residues (OR) as soil amendments in small-holder agro-ecosystems is promising. Six ORs (Leucaena leucocephala, Centrosema pubescens, Gliricidia sepium, Pueraria phaseoloides, Azadirachta indica, and Theobroma cacao) were amended to three tropical soils each at 24 mg g−1 dry soil in 120-day incubation study to estimate their nitrogen (N) mineralization and microbial biomass carbon (C) dynamics. Inorganic N contents varied among ORs, soil type and incubation days. Regardless of soil type, Gliricidia had the highest inorganic N among the studied ORs. Mineralization rate of 1.4 to 1.5 mg N kg−1 soil day−1 was observed for Lego and Tec soils, respectively, and was twice higher than Nya soil. However, Nya soil released higher inorganic N than Tec and Lego soils, implying high N mineralization efficiency in the former. Consistent soil pH increase was respectively observed for Theobroma and Pueraria treatments in all soils. Moreover, Theobroma and Pueraria amendments showed the highest soil microbial biomass C (MBC) at the end of the incubation. The assessed soil properties likely affected by the dominant edaphic factors and management influenced differences in MBC and dissolved organic carbon (DOC) while OR quality indices controlled N mineralization. Thus, we conclude that soil properties and OR type are important factors for optimal utilization of organic resources.
Richard Ansong Omari; Dorothea Sonoko Bellingrath-Kimura; Yoshiharu Fujii; Elsie Sarkodee-Addo; Kwame Appiah Sarpong; Yosei Oikawa. Nitrogen Mineralization and Microbial Biomass Dynamics in Different Tropical Soils Amended with Contrasting Organic Resources. Soil Systems 2018, 2, 63 .
AMA StyleRichard Ansong Omari, Dorothea Sonoko Bellingrath-Kimura, Yoshiharu Fujii, Elsie Sarkodee-Addo, Kwame Appiah Sarpong, Yosei Oikawa. Nitrogen Mineralization and Microbial Biomass Dynamics in Different Tropical Soils Amended with Contrasting Organic Resources. Soil Systems. 2018; 2 (4):63.
Chicago/Turabian StyleRichard Ansong Omari; Dorothea Sonoko Bellingrath-Kimura; Yoshiharu Fujii; Elsie Sarkodee-Addo; Kwame Appiah Sarpong; Yosei Oikawa. 2018. "Nitrogen Mineralization and Microbial Biomass Dynamics in Different Tropical Soils Amended with Contrasting Organic Resources." Soil Systems 2, no. 4: 63.
Efforts to improve soil productive capacity aimed at boosting crop production in the Northern Ghana has primarily focused on field-based experiments with little documentation on farmer practice and local indigenous knowledge of soil management. A sample group of 114 farmers from five farming communities in the Guinea Savannah was interviewed to evaluate their indigenous knowledge of crop production practices in the context of soil health, fertilization management, and crop yield. Data were collected using semi-structured interviews and responses for each category were calculated using simple proportions. Farmers’ fertilization practice was primarily influenced by fertilization resource availability and crop yield response. The results showed that inorganic fertilization was the commonest fertilization type among farmers. Farmer local indicators of soil health were predominantly limited to visually observable signs such as presence or absence of indicator plants, growth vigor of plants, soil color, and tilth, texture, and compaction. Non-tactile and visible indicators, notably soil chemical composition and presence of soil microorganisms, was rarely used. The listed indicators were congruent with scientific reports, although some knowledge gaps, particularly on the use of indicator plants, were identified. The use of indicator plants as determinants of healthy or non-healthy soils appeared to be influenced by the ease of control of weeds, its utilitarian benefits, benefits to the soil, and threats on cultivated crops. Famers were well informed about the decreasing crop yield. Fertilization practices and limitations in soil management practices with proposed capacity building approaches aimed at enhancing productive capacities of cultivated farmlands are discussed.
Richard Ansong Omari; Sonoko Bellingrath-Kimura; Elsie Sarkodee Addo; Yosei Oikawa; Yoshiharu Fujii. Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana. Sustainability 2018, 10, 1034 .
AMA StyleRichard Ansong Omari, Sonoko Bellingrath-Kimura, Elsie Sarkodee Addo, Yosei Oikawa, Yoshiharu Fujii. Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana. Sustainability. 2018; 10 (4):1034.
Chicago/Turabian StyleRichard Ansong Omari; Sonoko Bellingrath-Kimura; Elsie Sarkodee Addo; Yosei Oikawa; Yoshiharu Fujii. 2018. "Exploring Farmers’ Indigenous Knowledge of Soil Quality and Fertility Management Practices in Selected Farming Communities of the Guinea Savannah Agro-Ecological Zone of Ghana." Sustainability 10, no. 4: 1034.
The decline in soil productivity amidst efforts to increase crop yield in Sub Saharan Africa (SSA) has made it imperative to assess the current fertilization management approaches. This study was conducted in two agroecological zones (i.e., Guinea Savannah (GS) and Deciduous forest (DF)) of Ghana to evaluate how different fertilization schemes in the long term (>5 years) impacted the soil biochemical properties. Soil samples under four fertilization schemes (inorganic fertilizer only, low-to-medium organic residues only, inorganic fertilizers plus low-to-medium organic residues, and no fertilization) from 20 farmers’ field were sampled from March to April 2015. Soil biochemical quality indicators were determined using standard procedures. Overall, the average chemical and microbial biomass contents for most indicators were significantly higher in DF compared to GS. Relative to the reference sites, soil quality improvement were observed under inorganic fertilization in both agroecologies in contrast to significant soil deterioration (26.5%) under sole organic residue application in GS. Furthermore, the results showed that increased inorganic fertilization rate alone or combination with organic residues improved soil quality relative to the reference. The present results suggest the need to raise the current fertilizer application rates, especially in GS in order to enhance optimum soil productivity.
Richard Ansong Omari; Elsie Sarkodee-Addo; Yoshiharu Fujii; Yosei Oikawa; Sonoko Dorothea Bellingrath-Kimura. Impacts of Fertilization Type on Soil Microbial Biomass and Nutrient Availability in Two Agroecological Zones of Ghana. Agronomy 2017, 7, 55 .
AMA StyleRichard Ansong Omari, Elsie Sarkodee-Addo, Yoshiharu Fujii, Yosei Oikawa, Sonoko Dorothea Bellingrath-Kimura. Impacts of Fertilization Type on Soil Microbial Biomass and Nutrient Availability in Two Agroecological Zones of Ghana. Agronomy. 2017; 7 (3):55.
Chicago/Turabian StyleRichard Ansong Omari; Elsie Sarkodee-Addo; Yoshiharu Fujii; Yosei Oikawa; Sonoko Dorothea Bellingrath-Kimura. 2017. "Impacts of Fertilization Type on Soil Microbial Biomass and Nutrient Availability in Two Agroecological Zones of Ghana." Agronomy 7, no. 3: 55.
The use of plant materials as soil amendments is an uncommon practice amongst major farming communities in Ghana, although it is necessary for soil fertility improvement. An examination of the effects of soil amendments is necessary to encourage the use of under-utilized organic resources in Ghana. Thus, a field experiment was conducted using 8 different tropical plant materials mixed with chicken manure as soil amendments for growth of tomato as a test crop. The plant materials included Leucaena leucocephala, Centrosema pubescens, Sesbania sesban, Gliricidia sepium, Mucuna pruriens, Pueraria phaseoloides, Azadirachta indica, and Theobroma cacao. There were two other treatments: one with equivalent amounts of chemical fertilizers and the other with no-fertilizer input (control). Plant materials were mixed with chicken manure to obtain a uniform carbon-to-nitrogen (C:N) ratio of 5:1. Except the no-fertilizer control, all treatments received the same amount of nitrogen (N). To clarify the decomposition pattern of the plant materials in soil, an incubation experiment was conducted using only the plant materials before the field experiment. The Gliricidia treatment released significantly more mineral N than the other plant materials in the incubation experiment. However, the tomato fruit yield was not enhanced in the Gliricidia treatment in the field experiment. The known quality parameters of the tested plant materials, such as total N, total carbon (C), C:N ratio, and total polyphenols, had minimal effects on their mineralization dynamics. Azadirachta showed the best synergistic effect with chicken manure through significantly increasing soil microbial biomass and fruit yield of tomato. This result provides insights into the possible adoption of Azadirachta in combination with chicken manure as a soil amendment in small-scale agricultural holdings.
Richard Ansong Omari; Han Phyo Aung; MuDan Hou; Tadashi Yokoyama; Siaw Onwona-Agyeman; Yosei Oikawa; Yoshiharu Fujii; Dorothea Sonoko Bellingrath-Kimura. Influence of Different Plant Materials in Combination with Chicken Manure on Soil Carbon and Nitrogen Contents and Vegetable Yield. Pedosphere 2016, 26, 510 -521.
AMA StyleRichard Ansong Omari, Han Phyo Aung, MuDan Hou, Tadashi Yokoyama, Siaw Onwona-Agyeman, Yosei Oikawa, Yoshiharu Fujii, Dorothea Sonoko Bellingrath-Kimura. Influence of Different Plant Materials in Combination with Chicken Manure on Soil Carbon and Nitrogen Contents and Vegetable Yield. Pedosphere. 2016; 26 (4):510-521.
Chicago/Turabian StyleRichard Ansong Omari; Han Phyo Aung; MuDan Hou; Tadashi Yokoyama; Siaw Onwona-Agyeman; Yosei Oikawa; Yoshiharu Fujii; Dorothea Sonoko Bellingrath-Kimura. 2016. "Influence of Different Plant Materials in Combination with Chicken Manure on Soil Carbon and Nitrogen Contents and Vegetable Yield." Pedosphere 26, no. 4: 510-521.
Fourteen Brassica species consisting of seven leafy vegetables and seven root vegetables were examined for 137Cs uptake differences in relation to their fine-root morphological characters. A pot experiment was conducted from November 2014 to February 2015 in a Phytroton using a contaminated soil of Fukushima prefecture. Leafy vegetables showed bigger root diameters, larger root surface area and larger root volume. Consequently, leafy vegetables had higher 137Cs uptake compared to root vegetables. Among the three fine-root parameters, only root surface area was observed as a significant contributing factor to higher 137Cs uptake in terms of transfer factor (TF, dry weight basis). Kakina exhibited higher 137Cs TF value (0.20) followed by Chinese cabbage (0.18) and mizuna (0.17). Lower TF values were observed in turnip (0.059), rutabaga (Kitanoshou) (0.062) and radish (Ha daikon) (0.064).
Han Phyo Aung; Yi Swe Aye; Akwasi Dwira Mensah; Richard Ansong Omari; Salem Djedidi; Yosei Oikawa; Naoko Ohkama-Ohtsu; Tadashi Yokoyama; Sonoko Dorothea Bellingrath-Kimura. Relations of fine-root morphology on 137 Cs uptake by fourteen Brassica species. Journal of Environmental Radioactivity 2015, 150, 203 -212.
AMA StyleHan Phyo Aung, Yi Swe Aye, Akwasi Dwira Mensah, Richard Ansong Omari, Salem Djedidi, Yosei Oikawa, Naoko Ohkama-Ohtsu, Tadashi Yokoyama, Sonoko Dorothea Bellingrath-Kimura. Relations of fine-root morphology on 137 Cs uptake by fourteen Brassica species. Journal of Environmental Radioactivity. 2015; 150 ():203-212.
Chicago/Turabian StyleHan Phyo Aung; Yi Swe Aye; Akwasi Dwira Mensah; Richard Ansong Omari; Salem Djedidi; Yosei Oikawa; Naoko Ohkama-Ohtsu; Tadashi Yokoyama; Sonoko Dorothea Bellingrath-Kimura. 2015. "Relations of fine-root morphology on 137 Cs uptake by fourteen Brassica species." Journal of Environmental Radioactivity 150, no. : 203-212.