Relevant bibliographies by topics / Plantes – Ghana

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Academic literature on the topic 'Plantes – Ghana'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Plantes – Ghana"

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Adu-Gyamfi, Samuel, Kwasi Amakye-Boateng, Henry Tettey Yartey, Aminu Dramani, and Victor Nii Adoteye. "Nuclear Energy in Ghana? History, Science and Policy." Journal of Social and Development Sciences 8, no. 3 (December 13, 2017): 11–34. http://dx.doi.org/10.22610/jsds.v8i3.1972.

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This paper discusses the issue of nuclear energy in Ghana, although the country is not operating a nuclear plant, the study focuses on the energy crisis that persistently hit the country and government’s plans to opt for nuclear energy as part of Ghana’s energy’s mix to cater for the shortfalls in Ghana’s electricity generation. Ghana after independence decided to add nuclear energy into its energy mix to promote industrialization and make Ghana an industrial hub and investment destination as well as make it a net exporter of power in Africa. In spite of this plan for a nuclear plant resurfacing within contemporary discourse, there has been a strong opposition against the country going nuclear, citing some safety and security issues which are sometimes fueled by lack of an in depth knowledge of what nuclear energy really entails. Qualitative research approach was employed to investigate Ghana’s drive for attaining its initial plans for a nuclear plant. Data has been retrieved from both primary and secondary sources. The analysis of the data collected revealed that Ghana’s inability to operate a nuclear plant is as a result of fear of a nuclear disaster like it happened at Three Mile Island in Pennsylvania, USA, Chernobyl in Ukraine and Fukishima Daichi in Japan, as well as the safety of the nuclear plants and the radioactive wastes emitted into the environment. The study revealed that this fear of people regarding nuclear energy is over-emphasized and again the major nuclear disasters that have rocked the world were caused by human error; in most cases security warnings were ignored. The study established that the delay in executing the plans are due to monetary challenges since building a nuclear plant involves a lot of money. This notwithstanding, Ghana has enough skilled nuclear scientists to manage the country’s nuclear plants should any be built.
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Agyarko, K., E. Darteh, and B. Berlinger. "Metal levels in some refuse dump soils and plants in Ghana." Plant, Soil and Environment 56, No. 5 (May 7, 2010): 244–51. http://dx.doi.org/10.17221/13/2010-pse.

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Concentrations of Cd, Hg, Pb, Cr, Fe, Co, Ni, Cu, Zn, Mo and As were determined in soils and leaves of plants from refuse dumpsites and background soils in two cities, a municipality and a rural community in Ghana, using a ThermoFinnigan Element 2 high resolution inductively coupled plasma mass spectrometric (HR-ICP-MS) instrument. The refuse dump soils were classified between 'Uncontaminated to Moderate' and 'Strongly Contaminated'. Pollution levels for Cd (Igeo = 2.06–2.40) and Zn (Igeo = 2.95–3.36) were higher than of the other metals. The refuse dump soil from the rural community was the least polluted with the metals. Fe and Ni loads in plants from the refuse dump soils in the cities and the municipality were beyond the normal ranges of 40–500 µg/g (Fe) and 0.02–5.00 µg/g (Ni). Transfer ratios for Cd, Hg, Cu, Zn and Pb and Fe of plants from the background soils were higher than those from the refuse dump soils, which might be due to the higher levels of organic matter, pH, phosphate, Ca and Mg in the refuse dump soils.
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Awuah-Nyamekye, Samuel. "Belief in Sasa: Its Implications for Flora and Fauna Conservation in Ghana." Nature and Culture 7, no. 1 (March 1, 2012): 1–15. http://dx.doi.org/10.3167/nc.2012.070101.

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The rate of depletion of plants and animal species in Ghana has assumed an alarming dimension, and the government is finding it difficult to control the process. Several factors account for this. A major one is the neglect of the traditional ecological knowledge prevalent in the culture of Ghana. Sasa is the Akan word for the spirit believed to be found in some plants and animals. This paper examines the role of sasa in flora and fauna conservation in Ghana. Traditional Ghanaians have a strong belief that some plants and animals have special spirits, which when cut (as in the case with plants) or killed (animals) can bring serious harm to the person. Thus, such plants and animals are not eliminated. This paper argues that sasa as an Akan indigenous conservation tool can complement the modern means of nature conservation in Ghana.
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R. Amorin, E. Broni-Bediako,. "Evaluation of the Operations of Liquefied Petroleum Gas Refilling Plants in Ghana – A Case Study." Journal of Energy and Natural Resource Management 3, no. 1 (February 24, 2018): 15–22. http://dx.doi.org/10.26796/jenrm.v3i1.53.

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The demand for Liquefied Petroleum Gas (LPG) in Ghana has increased over the years since the Government LPG PromotionProgramme in 1990 and has resulted in the rise of the operations of LPG refilling plants in Ghana especially in the urbanareas. The operations of these refilling plants have raised a lot of concerns among the general public over the years due to itsassociated accidents. The study aimed at evaluating the operations of LPG refilling plants in Ghana using Tarkwa as the studyarea. It adopted survey as its research design and supported with literature review. The main instrument used for data collectionwas a questionnaire. Data collected from five refilling plants were analysed using statistical methods as well as the gradingcriteria prescribed by National Petroleum Authority (NPA) of Ghana. None of the LPG refilling plants attained “Grade A”. It isrecommended that there should be constant monitoring on the operations of LPG refilling plants to ensure total compliance withstandards.
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ADDAI, Isaac Kwahene. "Selection in the M2 Generation of Soybeans (Glycine Max (L.) Merill) irradiated with Cobalt – 60 Gamma Irradiation in the Guinea Savannah Agroecology of Ghana." Ghana Journal of Science, Technology and Development 6, no. 1 (May 7, 2019): 30–37. http://dx.doi.org/10.47881/127.967x.

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Field studies were conducted at the research fields of the University for Development Studies, Ghana from July to November, 2014 and June to October 2015. The studies were aimed at investigating the effect of gamma irradiation on growth and grain yield of soybean. Seeds of soybean variety Jenguma were subjected to gamma irradiation at 150, 200, 250 and 300 Gy from the 60Co source at the Biotechnology and Nuclear Agricultural Research Institute of the Ghana Atomic Energy Commission in Accra, Ghana. The irradiated seeds and some unirradiated control (0 Gy) were planted during the 2014 cropping season in a randomized complete block design with three replications. At harvest, all M1 seeds for respective gamma ray doses were harvested and composited, and advanced to the M2 generation during the cropping season of 2015. In M1, gamma irradiation significantly (P < 0.05) affected seedling emergence. There was significant reduction in survival of seedlings especially from the 150 Gy. Seedling heights of the irradiated species were significantly (P < 0.05) reduced. Number of days to 50% flowering was also significantly (P < 0.05) affected. In M2, more desired traits were found from plants irradiated with the 200 Gy and 250 Gy doses, with only few in the 150 Gy and 300 Gy treated plants. There was a potential for total grain yield improvement. Numbers of pods per plant and seed weight were the key parameters found to influence grain yield. Maturity period was also found to be shorter in the selected plants. The shattering resistance of plants in the 200 Gy and 250 Gy was found to be a potential improvement over the parental variety ‘Jenguma’ which was originally bred for that purpose. Selected plants would be advanced into M3 generation for further studies and results will be published
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Caulton, E. "Book Review: Useful Plants of Ghana." Outlook on Agriculture 20, no. 2 (June 1991): 132. http://dx.doi.org/10.1177/003072709102000218.

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Domozoro, C. Y. F., C. C. Wilcock, M. D. Swaine, and A. H. Price. "Diversity of Poisonous Plants and their Antidotes, Affecting Ruminant Livestock Production on Rangelands in Ghana." Ghana Journal of Science 61, no. 2 (January 31, 2021): 118–32. http://dx.doi.org/10.4314/gjs.v61i2.12.

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The survival of the extensive livestock system, the practice for most farmers in the livestock industry in Ghana depends heavily on the natural pastures as forage resource. To efficiently use the rangelands, knowledge of the species composition, especially that of poisonous plants is essential. Documented knowledge in Ghana is scanty; documentation and dissemination of the knowledge resource would enable a wider access and wider benefit to stakeholders. A study was conducted in Ghana on poisonous plants with the aim to discover the existence and diversity of poisonous plants and associated antidotes affecting livestock for documentation and preservation of knowledge. 70 different items were cited; 22 were poisonous plants for which antidotes were not cited, 28 were poisonous plants with known antidotes and 32 antidotes. There were 575 citations of plants from 194 reported cases of suspected plant poisoning, categorized as poisonous plants for which no antidotes were cited (146), poisonous plants with cited antidotes (147) and antidotes (282). 50 plants species were identified and belonged to 29 plant families. Some plants were known only by local names. There was an extensive knowledge of the diversity of poisonous plants and antidotes within the ecological zones along with possible antidotes.
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Abrokwah, Francis, Henry Dzahini-Obiatey, Isaac Galyuon, Francis Osae-Awuku, and Emmanuelle Muller. "Geographical Distribution of Cacao swollen shoot virus Molecular Variability in Ghana." Plant Disease 100, no. 10 (October 2016): 2011–17. http://dx.doi.org/10.1094/pdis-01-16-0081-re.

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Cacao (Theobroma cacao L.) was introduced into West Africa from South America during the nineteenth century. However, cacao swollen shoot disease (CSSD) was first observed in Ghana in 1936 and, later, discovered in Nigeria, Côte d’Ivoire, Togo, and Sierra Leone. The objectives of this work were to assess the genetic diversity and spatial distribution of the Cacao swollen shoot virus (CSSV) in Ghana and investigate the origin and spread of the virus by identifying alternative host plants. Results obtained from polymerase chain reaction amplifications and phylogenetic relationship analyses of infected cacao and alternative host plants collected from the cacao-growing regions in Ghana revealed the existence of nine CSSV groups, A, B, C, E, G, J, K, L and M, with six groups detected for the first time in Ghana. The CSSV groups in Ghana are very divergent and correspond to at least five different putative species, according to the International Committee on Taxonomy of Viruses recommendations (A, B-C complex, G, E, and M), with the M species only being detected in the alternate host Ceiba pentandra. The spatial distribution of the different molecular groups in Togo, Côte d’Ivoire, and Ghana makes it difficult to predict a single origin for CSSV among the West African cacao-growing countries.
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Brentu, Collinson F., Paul R. Speijer, Kim R. Green, Barbara M. S. Hemeng, Dirk De Waele, and Daniel L. Coyne. "Micro-plot evaluation of the yield reduction potential of Pratylenchus coffeae, Helicotylenchus multicinctus and Meloidogyne javanica on plantain cv. Apantu-pa (Musa spp., AAB-group) in Ghana." Nematology 6, no. 3 (2004): 455–62. http://dx.doi.org/10.1163/1568541042360537.

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Abstract The damage potential of the plant-parasitic nematodes Pratylenchus coffeae, Helicotylenchus multicinctus and Meloidogyne javanica, was assessed on plantain (Musa spp., AAB-group) cv. Apantu-pa in microplots in Ghana. Hot water treated suckers, planted in 3 l plastic bags containing sterilised soil, were inoculated 1 month after planting with a single nematode species or a nematode species mixture; controls were not inoculated. The initial single species inocula consisted of 1000 or 10 000 nematodes per plant, whilst the initial species mixture inoculum consisted of 3000 nematodes of each nematode species per plant. Two months after planting, the suckers were transplanted into micro-plots (0.7 m3 concrete containers filled with sterilised soil). Inoculation of single species at either density resulted in lower (P ≤ 0.05) bunch weights of the mother plants (between 23-33% lower) than the noninoculated control plants, whilst bunch weights of plants inoculated with the species mixture were 18% lower (P ≤ 0.05). Nematode damage indices (% dead roots, root necrosis and sucker corm lesions) were more severe in P. coffeae inoculated treatments. There was no difference between inoculated treatments and the control in plant growth parameters (days to flowering, number of standing leaves, height, girth, number of suckers) of the mother plant at flowering and harvest. Plant toppling occurred only in, and in all, treatments involving P. coffeae, with up to 60% of bunch-carrying plants toppled in the most affected treatment (inoculation of 10 000 nematodes per plant). Therefore, projected yields per ha were low in P. coffeae inoculated treatments: 41, 73 and 65% lower than the control for inoculation of 1000, 10 000 and 3000 (in species mixture) individuals, respectively. Inoculation with 10 000 H. multicinctus or M. javanica per plant resulted in yield losses of 26 and 30%, respectively. This study suggests that P. coffeae is likely to be the most important biotic constraint to plantain production in Ghana. Nematodes have been viewed as the major biotic constraint to plantain production in the country, and P. coffeae is the most widespread and abundant nematode species on plantain in Ghana. The results further demonstrate that H. multicinctus and M. javanica can cause considerable yield reduction in plantain.
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Nguta, Joseph Mwanzia, Regina Appiah-Opong, Alexander K. Nyarko, Dorothy Yeboah-Manu, and Phyllis G. A. Addo. "Medicinal plants used to treat TB in Ghana." International Journal of Mycobacteriology 4, no. 2 (June 2015): 116–23. http://dx.doi.org/10.1016/j.ijmyco.2015.02.003.

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Dissertations / Theses on the topic "Plantes – Ghana"

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Claon, Jean Stéphane. "Exposition au mercure, à l'arsenic et au sélénium de l'écosystème et des populations riveraines de la lagune Aby (Côte d'Ivoire - Ghana) : recherche de bioindicateurs." Montpellier 1, 2004. http://www.theses.fr/2004MON13505.

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La cholécystokinine (CCK) est une hormone peptidique impliquée dans de nombreuses réponses biologiques, dont la régulation de la satiété au travers de sa liaison sur le récepteur CCK1. Elle induit également l'activation de la voie p38 MAP kinase. Cette protéine joue un rôle majeur dans les maladies inflammatoires. De ce fait, de nombreux inhibiteurs ont été développés, comme les composés SB202190 et SB203580. Cependant, il a été démontré que le composé SB203580 était capable d'inhiber significativement l'activité d'autres protéines kinases. Nous avons observé que le SB202190 et le SB203580 ont un effet inhibiteur dose-dépendant sur la liaison de la CCK à son récepteur CCK1. Cet effet est lié à une interaction directe avec le récepteur CCK1 sur un site distinct de celui de la CCK, localisé dans une zone comprenant les seconde et troisième boucles du récepteur. Nous avons également mis en évidence que ces deux inhibiteurs de p38 MAP kinase se comportent comme des antagonistes sur les réponses biologiques associées au récepteur CCK1. Réciproquement, nous avons montré que des analogues peptidiques ou non de la CCK inhibent directement l'activité de p38 MAP kinase
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Komlaga, Gustav. "Search for antiplasmodial compounds from Ghanaian medicinal plants." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS265/document.

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Une enquête ethnobotanique a été menée en Bosomtwi et Sekyere Est Districts de la Région Ashanti, au Ghana, en utilisant des questionnaires validés pour identifier les plantes traditionnellement utilisées pour gérer le paludisme. Cinq plantes avec une utilisation élevée ont été sélectionnés et une extraction préliminaire des matières végétales sélectionnées effectuées avec de l'eau, le methanol, l'acétate d'éthyle et d'éther de pétrole. Les extraits ont été dosés pour l'activité antiplasmodiale utilisant les méthodes antiplasmodiales in vitro. Les deux les plus prometteuses plantes, Phyllanthus fraternus (Phyllanthaceae) et Bambusa vulgaris (Pocea) ont été choisis pour l'isolement bio-guidée de constituants bioactifs en utilisant des méthodes chromatographiques (par exemple TLC, flash chromatographie, HPLC semi-préparative). Élucidation de la structure des composés isolés ont été effectuées en utilisant des méthodes spectroscopiques (par exemple 1D et 2D Magnétique Nucléaires Résonance (MNR), infrarouge et spectrométrie de masse et leur activité antiplasmodiale étudiés
An ethnobotanical survey was conducted in Bosomtwi and Sekyere East Districts of the Ashanti Region, Ghana, using validated questionnaires to identify plants used traditionally to manage malaria. Five plants with high usage were selected and a preliminary extraction of the selected plant materials done using water, methanol, ethyl acetate and petroleum ether. The extracts were assayed for antiplasmodial activity using in vitro antiplasmodial methods. The two most promising plants, Phyllanthus fraternus (Phyllanthaceae) and Bambusa vulgaris (Pocea) were selected for bio-guided isolation of bioactive constituents using chromatographic methods (e.g. TLC, flash chromatography, semi-preparative HPLC). Structural elucidation of the isolated compounds were done using spectroscopic methods (e.g. 1D and 2D Nuclear Magnetic Resonance, Infrared and mass spectrometry) and their antiplasmodial activity studied
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Pesewu, George Antepim. "Antibacterial activity of plants used in traditional medicines of Ghana." Thesis, University of East London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532984.

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The work presented in this thesis involves scientific investigation of 25 plant species, used in traditional medicine of Ghana to treat skin disease and/or to treat antimicrobial (viral, bacterial or protozoan) infections which were identified through an ethnobotanical survey. It also involves antimicrobial screening, matrix-assisted laser desorption/ionization time of-flight mass spectrometry (MALDI-ToF-MS) for the identification of antibacterial compounds of low molecular mass in aqueous extracts of Cryptolepis sanguinolenta roots and Alchornea cordifolia leaves. The thesis consists of 3 related studies. In the first study, 25 plant species were collected through an ethnobotanical survey in Ghana. Extracts of the plant species (chloroform, ethanol and aqueous) were prepared and agar well diffusion tests, MIC's and MBC's were used to investigate antibacterial activity with special interest in antimethicillin- resistant Staphylococcus aureus (MRSA) activity as the bacteria has become a problem worldwide and the need for novel sources of agents against MRSA. Extracts of 13 plant species inhibited the growth of one or more of the following bacteria: MRSA, methicillin-sensitive Staph aureus (MSSA), Streptococcus pyogenes, Escherichia coli, Pseudomonas aeruginosa and Proteus vulgaris. Extracts from I1 of these 13 plant species also inhibited the growth of three or more of 14 additional clinical isolates of MRSA. Aqueous extracts of Alchornea cordifolia were active against all 21 bacterial strains tested and showed the highest levels of anti-bacterial activity overall with MIC values against MRSA in the range of 1.6-3.1 mg ml-1 and MBC values in the range of 6.3-12.5 mg ml's. The presence of antibacterial activity in extracts of Elaeophorbia drupifera, Solanum verbascifolium and the ethanol extract of Rauwolfia vomitoria are reported for the first time. Extracts from Alchornea cordifolia, also used to treat wounds, had the widest spectrum of anti-bacterial activity. The second study describes sample preparation methods for the analysis of low molecular mass antibacterial compounds in aqueous root extract of C. sanguinolenta leading to the rapid identification of cryptolepine using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF-MS). Antibacterial evaluation of cryptolepine on Staph aureus and MRSA showed that concentration range 0.02-0.03 mg ml"' (MIC) of the compound presents bacteriostatic effects on the bacteria. Eleven synthetic combinational derivatives based on the quindoline (cryptolepine) structure were also tested against Staph aureus and MRSA. MIC values of the derivatives were ranging from 0.1-2 mg ml-1 against the bacteria tested. Chlorocryptolepine derivative had the lowest MIC value of 0.01 mg ml"' and represents a possible antibacterial agent for further development. In the third study, based on the antibacterial activity, aqueous leaf extract of Alchornea cordifolia was further investigated against 32 clinical isolates of MRSA. Inhibition zone diameters range from 18-30 mm against the isolates. MIC and MBC values ranging from 1.6-3.1 mg ml-1 and 6.3-12.5 mg ml'' of the plant extract were found against the MRSA isolates. Phytochemical screening of the aqueous leaf extract of the plant showed the presence of alkaloids, saponins and tannins. MALDI-ToF-MS analysis showed peaks at m/z 170 and 207 which corresponded to gallic acid and alchornine respectively.
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Domozoro, Charles Yaw Fosu. "Ethnobotany and molecular identification of poisonous plants affecting ruminant livestock in Ghana." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25814.

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Akpabey, Felix Jerry. "Quantification of the cross-sectoral impacts of waterweeds and their control in Ghana." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1005435.

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The Akosombo Dam on the Volta River in Ghana was built in 1963 to provide cheap energy to fuel industry and to accelerate the economic growth of the country. It provides hydroelectric power, enhanced fishing and water transportation upstream, and improved opportunities for irrigated farming, especially in the lower reaches, and their attendant economic multiplier effects. A few years after the construction of this major dam, a rapid expansion of industrialization took place in Ghana. This brought about an exponential increase in demand for more electrical power. This led to the construction of a smaller dam at Akuse, downstream of the Akosomho Dam in 1981 and the formation of a headpond at Kpong. The impoundment of the river at the two sites (Akosombo and Kpong) caused an alteration in the existing ecological and biophysical processes in the river basin, including a slowing of the flow of the river, upstream and downstream. Changes in the natural processes, such as a reduction in the flow of the river and an increase in nutrient status of the water, resulted in an invasion of aquatic weeds, increasing the density of aquatic snails (intermediate hosts of schistosomiasis), silting and closure of the estuary, as well as other more subtle effects. The invasion of the river's main course and the dams by aquatic plants led to a corresponding reduction of navigable water both upstream and downstream. The aim of this thesis was to quantify the impact and control of waterweeds, especially water hyacinth, Eichhornia crassipes (Mart) Solms-Laubach (Pontederiaceae), in Ghana. A floral survey on the Kpong Headpond recorded 49 emergent, 12 free floating and I submerged aquatic plant species, many of which were indigenous, but the exotic or introduced water hyacinth was recorded at most of the sampling sites, and was the most abundant and had the biggest impact on the utilization of the water resource. Mats of water hyacinth served as substrates for other, indigenous species to grow out into the main channel of the headpond, including the intake point of the Kpong head works of the Ghana Water Company Limited (GWCL) and landing sites for boats. These mats resulted in a reduction of the fish (fin and shell) harvest, reducing the annual production to far below demand. Water hyacinth was also shown to have severe health implications. A survey of the Ministry of Health records showed that the prevalence of both urinary and intestinal schistosomiasis had risen significantly over time as the abundance of waterweeds, most notably water hyacinth, increased, and ranged between 70% and 75% but up to 100% in some lakeside communities. Based on the work done by an NGO on board the medical boat ("Onipa Nua "), losses in terms of money due to the effect on health of the aquatic weed infestations on the Volta River in 2006 amounted to US$ 620,000. Economic losses due to invasive alien aquatic weeds were also calculated on the Oti River Arm of Lake Volta. It was estimated that about US$2.3 million per annum would be lost to the Volta Lake Transport Company and individual boat transport operators if this section of the river were 100% covered by aquatic weeds (water hyacinth and Salvinia molesta D.S. Mitchell (Salviniaceae)). It was also estimated that US$327,038 was spent annually in monitoring and managing the weeds in the Oti River. Control interventions for aquatic weeds have been implemented in river systems in Ghana. The biological control agents Neochetina bruchi Hustache (Coleoptera, Curculionidae) and Neochetina eichhorniae Warner (Coleoptera, Curculionidae) have been used on water hyacinth infestations in the Oti River Arm of Lake Volta, the Tano River and the Lagoon complex in the south-western part of the country. Cyrtobagous salviniae Calder and Sands (Coleoptera: Curculionidae) has been used to control salvinia, and Neohydronomous affinis Hustache (Coleoptera: Curculionidae) to control water lettuce, Pistia stratiotes Lilmaeus (Araceae) in the Tano River and Lagoon complex. Although these projects have been regarded as successful, they have relied on research from elsewhere in the world and no postrelease quantification has been conducted. In evaluating the impact of the biological control agents Neochetina bruchi and Neochetina eichhorniae weevils on water hyacinth infestations in the Tano River, fresh adult feeding scars were recorded as well as the numbers of adult weevils on each water hyacinth plant sampled at six sites. Despite being released in 1994, weevil numbers and resultant damage to plants in the Tano Lagoon was low in comparison to other regions of the world where these agents have been used. The main reason for this is that this lagoon floods seasonally, washing weevil-infested plants out to sea. Water hyacinth then re-infests the lagoon from seed and the weevil populations are low. To resolve this situation, two courses of action are proposed. The first is to mass rear the weevils along the shore of the lagoon and release them when the first seedlings recruit. The second proposal is that additional agents that have shorter lifecycies and are more mobile than the weevils should be released. To this end, the water hyacinth mirid, Eccritotarsus catarinensis (Carvalho) (Hemiptera: Miridae) was imported from South Africa and released onto the Tano Lagoon in 2009. Retrospective laboratory host specificity trials were conducted on Neachetina eichharniae and Neachetina bruchi weevils 15 years after their release into Ghana to see if any variation in their host ranges had occurred. Considerable damage was inflicted on the E. crassipes leaves by the Neachetina weevils, while little feeding damage was recorded on both Heteranthera callifalia Kunth. (Pontederiaceae) and Eichharnia natans (P.Beauv.) Solms (Pontederiaceae). All the weevils introduced on H callifalia and E. natans died after the first week. This study served to confirm the host specificity and thereby the safety of these agents. Invasive alien aquatic macrophytes have negative impacts on the environment and economy of Ghana. The control of these weeds is essential to socioeconomic development and improved human health standards in riparian communities. Biological control offers a safe and sustainable control option, but requires diligent implementation. However, aquatic weed invasion is more typically a result of the anthropogenically induced eutrophication of water bodies, and this is the main issue that has to be addressed.
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Brew-Hammond, John Peter Abeeku. "Technological accumulation and electric power generation in Sub-Saharan Africa : the case of Volta River Authority, Ghana." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363360.

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Naab, JB, SMB Chimphango, and FD Dakora. "N2 fixation in cowpea plants grown in farmers' fields in the Upper West Region of Ghana, measured using 15N natural abundance." Symbiosis, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001478.

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Abstract Few studies have assessed the levels of symbiotic N nutrition in legumes grown by fanners in Africa. In this study, the shoots of cowpea plants were sampled from 63 farms in 12 villages within 5 districts of the Upper West Region of Ghana, and assessed for growth and symbiotic N nutrition. The data revealed considerable differences in cowpea plant density per m2 , plant growth, 15N natural abundance (OI5N), %Ndfa, and N-fixed among different farms under one village, and between villages under the same district, and between districts in the Upper West Region. In farms where there were fewer cowpea plants per m2 , plant growth was better and dry matter yield per plant significantly greater, leading to strong variations in O!5N values. Except for four farms at Bamahu which had cowpea shoot Ndfa values of 12.1%,30.0%,36.5% and 46.6%, one farm at Babile with Ndfa value of 58.1%, and three farms at Silbelle with Ndfa values of56.8%, 57.9% and 68.7%, the remaining 55 out of the 63 farms studied showed high shoot Ndfa values, ranging from 70.6% to 99.7%, which clearly indicates that cowpea cultivated by farmers in the Upper West Region of Ghana meet a large proportion of their N requirements from symbiotic fixation. At the district level, isotopic analysis showed that, on average, the 15N natural abundance values (%0) of cowpea shoots were -0.496±0.04 for Jirapa, -O.083±0.06 for Nadowli, 0.368±O.08 for Lawra, l.333±0.29 for Wa and 0.365±0.09 for Sissala district. Estimates of the legume's N derived from fixation were 66.3% for Wa district, 89.9% for Nadowli, 79.4% for Lawra, 78.9% for Sissala and 80.9% for Jirapa district. The amount ofN-fixed ranged from 402.3 mg.plant' for Nadowli, 176.5 mg.plant" for Wa, 235.4 mg.plant' for Sissala, 179.0 rng.plant' for Lawra to 249.2 mg.plane! for the Jirapa district. Expressed on per-hectare basis using cowpea density per m2 , the total amount ofN-fixed was around 16.6 kg ha-! in the Nadowli district, 19.1 kg ha-! in Wa, 23.0 kg ha' in Sissala, 21.1 kg ha-I in Lawra and 17.6 kg ha-1in the Jirapa district. Averaged across all 5 districts, N-fixed by cowpea was about 19.5 kg ha-! in the Upper West Region of Ghana. These data suggest that, increasing N2 fixation in fanners' fields in Ghana would require optimization of cowpea plant density rather than biological manipulation of the symbiotic process (as %Ndfa values were generally very high).
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8

Coppin, Julia. "A study of the nutritional and medicinal values of Moringa oleifera leaves from sub-Saharan Africa Ghana, Rwanda, Senegal and Zambia." 2008. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17294.

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Books on the topic "Plantes – Ghana"

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Carel, Jongkind, ed. Woody plants of Western African forests: A guide to the forest trees, shrubs and lianes from Senegal to Ghana. Richmond, Surrey: Kew Pub., 2006.

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Dokosi, O. B. Herbs of Ghana. Accra: Published for Council for Scientific and Industrial Research, Ghana by Ghana Universities Press, 1998.

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Abbiw, Daniel K. Useful plants of Ghana: West African uses of wild and cultivated plants. London: Intermediate Technology Publications, 1992.

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Abbiw, Daniel. Useful plants of Ghana: West African uses of wild and cultivated plants. Kew [England]: Intermediate Technology Publications, 1990.

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Abbiw, Daniel K. Useful plants of Ghana: West African uses of wild and cultivated plants. London: Intermediate Technology, 1989.

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Offie, S. K., and S. K. Offei. Crop diseases in Ghana and their management. [Accra]: Published by Smartline (Pub.) Ltd. for College of Agriculture and Consumer Sciences, University of Ghana, Legon, 2008.

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Bening, R. Bagulo. A history of education in Ghana 1907-1976. Accra: Ghana Universities Press, 1990.

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Tweneboah, Charles Kwame. Vegetables & spices in West Africa: With special reference to Ghana. [Ghana]: Co-Wood Publishers, 2000.

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University of Ghana. Institute of African Studies, ed. Research materials on traditional medicine in the Nzema area (Ghana). Legon [Ghana]: Institute of African Studies, University of Ghana, 2011.

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Compaoré, Halidou. The impact of savannah vegetation on the spatial and temporal variation of the actual evapotranspiration in the Volta Basin, Navrongo, Upper East Ghana. Göttingen: Cuvillier, 2006.

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Book chapters on the topic "Plantes – Ghana"

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Abbiw, Daniel. "Prelims – Useful Plants of Ghana." In Useful Plants of Ghana, i—xii. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.000.

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Abbiw, Daniel. "11. Plants and Soil Nutrients." In Useful Plants of Ghana, 252–58. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.011.

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Abbiw, Daniel. "Back matter – Useful Plants of Ghana." In Useful Plants of Ghana, 259–337. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.012.

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Ameka, G., J. Adomako, K. A. A. De Graft-Johnson, M. Cheek, and M. Swaine. "Rheophytes of Ghana." In The Biodiversity of African Plants, 780–82. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0285-5_99.

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Abbiw, Daniel. "1. Forests and Conservation." In Useful Plants of Ghana, 1–21. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.001.

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Abbiw, Daniel. "2. Food and Fodder." In Useful Plants of Ghana, 22–58. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.002.

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Abbiw, Daniel. "3. Industrial or Cash Crops." In Useful Plants of Ghana, 59–77. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.003.

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Abbiw, Daniel. "4. Building and Construction." In Useful Plants of Ghana, 78–89. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.004.

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Abbiw, Daniel. "5. Furnishings; Fuel." In Useful Plants of Ghana, 90–102. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.005.

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Abbiw, Daniel. "6. Tools and Crafts." In Useful Plants of Ghana, 103–17. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1990. http://dx.doi.org/10.3362/9781780443737.006.

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Conference papers on the topic "Plantes – Ghana"

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Heard, R. G. "The Ultimate Solution: Disposal of Disused Sealed Radioactive Sources (DSRS)." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40029.

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The borehole disposal concept (BDC) was first presented to ICEM by Potier, J-M in 2005 [1]. This paper repeats the basics introduced by Potier and relates further developments. It also documents the history of the development of the BDC. For countries with no access to existing or planned geological disposal facilities for radioactive wastes, the only options for managing high activity or long-lived disused radioactive sources are to store them indefinitely, return them to the supplier or find an alternative method of disposal. Disused sealed radioactive sources (DSRS) pose an unacceptable radiological and security risk if not properly managed. Out of control sources have already led to many high-profile incidents or accidents. One needs only to remember the recent accident in India that occurred earlier this year. Countries without solutions in place need to consider the future management of DSRSs urgently. An on-going problem in developing countries is what to do with sources that cannot be returned to the suppliers, sources for which there is no further use, sources that have not been maintained in a working condition and sources that are no longer suitable for their intended purpose. Disposal in boreholes is intended to be simple and effective, meeting the same high standards of long-term radiological safety as any other type of radioactive waste disposal. It is believed that the BDC can be readily deployed with simple, cost-effective technologies. These are appropriate both to the relatively small amounts and activities of the wastes and the resources that can realistically be found in developing countries. The South African Nuclear Energy Corporation Ltd (Necsa) has carried out project development and demonstration activities since 1996. The project looked into the technical feasibility, safety and economic viability of BDC under the social, economic, environmental and infrastructural conditions currently prevalent in Africa. Implementation is near at hand with work being done in Ghana with support from the IAEA. Here the site selection is complete and studies are being carried out to test the site parameters for inclusion into the safety assessment.
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Reports on the topic "Plantes – Ghana"

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Carreras, Marco, Amrita Saha, and John Thompson. Rapid Assessment of the Impact of Covid-19 on Food Systems and Rural Livelihoods in Sub-Saharan Africa – Synthesis Report 2. Institute of Development Studies (IDS), December 2020. http://dx.doi.org/10.19088/apra.2020.023.

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This report presents a summary of findings emerging from the second round of a three-wave rapid assessment led by the Agricultural Policy Research in Africa (APRA) Programme of the Future Agricultures Consortium (FAC) in October-November 2020 to examine how COVID-19 is affecting food systems and rural livelihoods in eight countries – Ethiopia, Ghana, Kenya, Malawi, Nigeria, Tanzania, Zambia and Zimbabwe. It builds on a set of phone-based household surveys and key informant interviews conducted in those countries in June-July 2020, which served as the baseline for this research.1 APRA will continue to monitor the situation as the response to the pandemic unfolds through the third round of data collection and analysis planned for the first quarter of 2021.
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Plant clinics and plant health diagnostic labs team up for crop health in Ghana. CABI, 2015. http://dx.doi.org/10.1079/cabicomm-62-8109.

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