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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.
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.