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Journal articles on the topic 'Guinea savanna'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

ALIYU, A. U., M. A. YUSUF, and L. F. BUBA. "POTENTIAL OF MAIZE (Zea mays) YIELD IN THE SAVANNA OF KANO STATE, SEMI-ARID REGION OF NIGERIA." FUDMA Journal of Agriculture and Agricultural Technology 8, no. 1 (2022): 258–64. http://dx.doi.org/10.33003/jaat.2022.0801.091.

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This study examined the Savanna agro-ecologies potential of maize yield in Kano State. Field experiment consisted of five different fertilizer treatments namely were replicated three times in a Randomized Complete Block Design. The trial was established at three different locations namely: Doguwa (Northern Guinea Savanna), Bunkure (Sudan Savanna 2) and Dambatta (Sudan Savanna1) with a total of fifteen treatments(Five fertilization for three locations). White maize hybrid cultivar (SC651) was planted at 25cm and 75cm intra plants and inters ridges respectively. The results showed that highest m

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Tofa, Abdullahi I., Uche F. Chiezey, Bashir A. Babaji, et al. "Modeling Planting-Date Effects on Intermediate-Maturing Maize in Contrasting Environments in the Nigerian Savanna: An Application of DSSAT Model." Agronomy 10, no. 6 (2020): 871. http://dx.doi.org/10.3390/agronomy10060871.

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The Crop Environment Resource Synthesis (CERES)-Maize model in Decision Support System for Agricultural Technology Transfer (DSSAT) was calibrated and evaluated with experimental data for simulation of response of two intermediate-maturing maize varieties to different sowing dates in the Nigerian savannas. The calibration experiments involved 14 consecutive field trials conducted in the rainy and dry seasons in Bayero University Kano (BUK), Dambatta, and Zaria between 2014–2019. Two sets of field experiments were conducted simultaneously for model evaluation in Iburu in the southern Guinea sav

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Ebomoyi, E. W., A. R. Wickremasinghe, and Flora F. Cherry. "Anthropometric indicators of children's nutrition in two Nigerian communities." Journal of Biosocial Science 23, no. 1 (1991): 33–38. http://dx.doi.org/10.1017/s0021932000019040.

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SummaryOn a sample of some 2000 children living in two ecologically different zones (the Wooded and Guinea savanna) in Kwara state, Nigeria, body measurements were taken, to serve as indicators of the state of nutrition. There was more undernutrition in the Guinea savanna than in the Wooded. More males than females were undernourished in the Guinea savanna but not in the Wooded. It is argued that the differences between districts stem from social and cultural variables.

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SR., Kolapo. "Propagation of Pterocarpus erinaceus Poir. seeds from four vegetation zones of Nigeria, using different pre-sowing treatments and sowing media." Journal of Biodiversity and Environmental Sciences (JBES) 22, no. 5 (2023): 92–103. https://doi.org/10.5281/zenodo.10485381.

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<em>Pterocarpus erinaceus </em>Poir. is a tree species of the family Leguminonaseae distributed across West and Central Africa. The surging demand for its wood has hampered its natural regeneration in Nigeria. Effects of pre-sowing treatments and soil media on the germination of its seeds were examined using stratified random sampling. Seeds were sourced from Guineo-Sudanian savanna, Southern Guinea savanna, Derived/Guinea savanna and Northern/Southern Guinea savanna. Pre-sowing treatments including: water (27<sup>0</sup>C, 50<sup>0</sup>C, and 75<sup>0</sup>C for 8 hours, 16 hours and 24

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WÜSTER, WOLFGANG, LAURENT CHIRIO, JEAN-FRANÇOIS TRAPE, et al. "Integration of nuclear and mitochondrial gene sequences and morphology reveals unexpected diversity in the forest cobra (Naja melanoleuca) species complex in Central and West Africa (Serpentes: Elapidae)." Zootaxa 4455, no. 1 (2018): 68. http://dx.doi.org/10.11646/zootaxa.4455.1.3.

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Cobras are among the most widely known venomous snakes, and yet their taxonomy remains incompletely understood, particularly in Africa. Here, we use a combination of mitochondrial and nuclear gene sequences and morphological data to diagnose species limits within the African forest cobra, Naja (Boulengerina) melanoleuca. Mitochondrial DNA sequences reveal deep divergences within this taxon. Congruent patterns of variation in mtDNA, nuclear genes and morphology support the recognition of five separate species, confirming the species status of N. subfulva and N. peroescobari, and revealing two p

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Abdulkadir N. A., Ewusi-Mensah N., Opuko, A., et al. "Response of groundnut (Arachis hypogea) to rhizobia inoculation, mineral nitrogen and inoculation amendment at the two agro ecological zones of northern Nigerian savannah." GSC Advanced Research and Reviews 8, no. 1 (2021): 022–27. http://dx.doi.org/10.30574/gscarr.2021.8.1.0140.

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Nitrogen is the most limiting major nutrient required by all living plants. Nitrogen fertilizer is costly and too much application of nitrogen causes detrimental effects to our ecosystem. Alternatively, the use of commercial microbial inoculants will be an alternative to chemical fertilizer for the small holder farmers in northern Nigeria. Groundnut (pea nut) was selected as a test crop for the inoculation. The experiment was conducted at Sudan savannah in Kano State and Guinea savannah in Bauchi state of Nigeria during the 2016 cropping season. The design of the experiment was RCBD with seven

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Abdulkadir, N. A., N. Ewusi-Mensah, A. Opuko, et al. "Response of groundnut (Arachis hypogea) to rhizobia inoculation, mineral nitrogen and inoculation amendment at the two agro ecological zones of northern Nigerian savannah." GSC Advanced Research and Reviews 8, no. 1 (2021): 022–27. https://doi.org/10.5281/zenodo.5113700.

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Nitrogen is the most limiting major nutrient required by all living plants. Nitrogen fertilizer is costly and too much application of nitrogen causes detrimental effects to our ecosystem. Alternatively, the use of commercial microbial inoculants will be an alternative to chemical fertilizer for the small holder farmers in northern Nigeria. Groundnut (pea nut) was selected as a test crop for the inoculation. The experiment was conducted at Sudan savannah in Kano State and Guinea savannah in Bauchi state of Nigeria during the 2016 cropping season. The design of the experiment was RCBD with seven

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Takim, F. O., J. O. Omeke, P. Tunku, et al. "Evaluation of maize-soybean intercropping systems and fertilizer rates on maize grain yield using competitive indices." Journal of Agricultural Research and Development 18, no. 1 (2020): 63–76. http://dx.doi.org/10.4314/jard.v18i1.8.

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Field trials were conducted in savanna ecologies of Nigeria during the 2015 and 2016 seasons using maize (PVA8) and soybean (TGX 1448-2E) intercropping systems with different fertilizer rates to evaluate the yield of maize and assess the best intercropping system for resource management. Single plant stands and two plants/stand and 2 arrangements of rows (one row on a ridge and two rows on a ridge) were used to impose maize plant densities evaluated in strip inter-crop with soybean. The trial was factorial, laid out in a randomized complete block design and replicated three times. Thus, 8 maiz

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Nyerges, A. "Development in the Guinea savanna." Science 238, no. 4834 (1987): 1637–38. http://dx.doi.org/10.1126/science.3686001.

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Bolarinwa, Saheed Tunde, and Anthony Ozoemenam Uzoma. "Symbiotic Effectiveness of Rhizobia Strains Isolated from Nigerian Savanna." Advanced Journal of Graduate Research 5, no. 1 (2018): 24–32. http://dx.doi.org/10.21467/ajgr.5.1.24-32.

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Laboratory and screenhouse experiment were conducted to assess the symbiotic effectiveness (SE) of rhizobia isolated from southern Guinea savanna, northern Guinea savanna and Sudan savanna of Nigeria and response of promiscuous soybean varieties, TGx1448-2E, TGx1835-10E and TGx1955-10E to inoculation with ten indigenous rhizobia isolates. The soybean varieties were grown on sterilized sand at the screenhouse of the Department of Soil Science and Land Management, Federal University of Technology Minna and watered using Sandsman’s nutrient solution. The treatments were un-inoculated control, min

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Ajayi, Folasade Olubukola, Oladeji Bamidele, Waheed Akinola Hassan, et al. "Production performance and survivability of six dual-purpose breeds of chicken under smallholder farmers' management practices in Nigeria." Archives Animal Breeding 63, no. 2 (2020): 387–408. http://dx.doi.org/10.5194/aab-63-387-2020.

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Abstract. Chickens kept under free-range, backyard or semi-intensive systems in the developing countries have more diverse use and benefits to rural households. Their use varies from region to region and from community to community within a region. The study investigated growth, laying performance and survivability of six improved dual-purpose breeds in five agroecologies of Nigeria represented by the following states: Kebbi (Sudan savanna/northern Guinea savanna); Kwara (northern Guinea savanna/southern Guinea savanna); Nasarawa (southern Guinea savanna/derived savanna); Imo (lowland rainfore

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Oguntunji, A. O., and K. L. Ayorinde. "Blood protein polymorphism and genetic diversity in locally adapted Muscovy duck (Cairina moschata) in Nigeria." Animal Genetic Resources/Ressources génétiques animales/Recursos genéticos animales 56 (January 28, 2015): 9–18. http://dx.doi.org/10.1017/s2078633614000526.

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SummaryCharacterization and genetic diversities among members of a species are fundamental to their improvement and conservation. This study was conducted to characterize and estimate genetic diversity in the ecotypes of the locally adapted Muscovy duck in Nigeria using blood proteins (haemoglobin, transferrin and albumin) and enzyme (carbonic anhydrase) markers. Blood samples collected from 20, 40 and 20 adult Muscovy ducks sampled randomly from the Rain Forest, Derived Savanna and Guinea Savanna ecotypes, respectively, were typed for blood proteins and enzyme polymorphism with cellulose acet

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Olufolaji, A. O., and Lanre A. Denton. "Agro-ecological Variation in the Growth and Development of Grain Amaranth (Amaranthus sp.) in Nigeria." HortScience 31, no. 4 (1996): 652b—652. http://dx.doi.org/10.21273/hortsci.31.4.652b.

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The pale yellow-seeded Amaranth is virtually a new crop in Nigerian agriculture. Under the sponsorship of the National Agricultural Research Project (NARP), 12 accessions were evaluated for agronomic characters and yield attributes in three agro-ecological zones of the country. The results showed significant variation in the agronomic characters of the accessions. Top accessions recorded average grain yields of 4.5, 3.5, and 2.6 t·ha–1 in Sudan savanna, derived savanna, and guinea savanna zones of the country, respectively. Response of the accessions to qualitative and quantitative characters

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Oyeyinka, B. O., S. Oyedeji, and P. O. Fatoba. "Eco-evaluation of the Nutrient Dynamics of Dry Season Litterfall in a Guinea Savanna, North-Central Nigeria." Nigerian Journal of Basic and Applied Sciences 32, no. 2 (2025): 12–18. https://doi.org/10.4314/njbas.v32i2.2.

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Savannas are prominent members of tropical terrestrial ecosystems. Leaf and branch litter fractions were sampled from ten isolated, natural tree stands of Azadirachta indica (A. Juss), Daniella oliveri (Rolfe) Hutch & Dalziel, Parkia biglobosa (Jacq.) Benth.,Prosopis africana (Guill.&Perr.) and Vitellaria paradoxa (Gaertner) F.}, in the dry season. Litterfall samples were analysed for Calcium and Magnesium (Atomic Absorption Spectrophotometry) (AAS), Potassium (Flame Photometry), Nitrate-nitrogen and Phosphate-phosphorus (Colorimetric titration). Results showed that branch litter fract

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Wahab, B., O. J. Taiwo, A. I. P. Diallo, O. K. Bishoge, and D. A. Samoura. "Small-scale Farmers’ Adoptions of Climate-smart Agricultural Practices in the Guinean Savanna’s Agroecological Zones." Journal of Agricultural Sciences – Sri Lanka 19, no. 1 (2024): 89–106. http://dx.doi.org/10.4038/jas.v19i1.9588.

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Purpose: Guinean Savanna is the largest agro-productive area in Guinea and the most vulnerable to climate-induced hazards that challenge farming practices and cause crop failures. Subsequently, small-scale farmers have recently lent themselves to climate-smart agricultural practices (CSAPs) as alternatives to maintain food security. Developing such practices has led this study to identify farmers’ know-how of CSAPs and factors motivating these practices. Research Method: Methods including household surveys, focus group discussions, key informant interviews and field observations were used to c

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Surbakti, Suriani, Michael Balke, and Lars Hendrich. "Discovery of the Australian diving beetle Neobidessodes mjobergi (Zimmermann, 1922) in New Guinea (Coleoptera, Dytiscidae, Hydroporinae)." Check List 17, no. 2 (2021): 633–36. http://dx.doi.org/10.15560/17.2.633.

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The diving beetle genus Neobidessodes Hendrich &amp; Balke, 2009 contains 10 species. Nine of them were considered endemic to Australia, one of them to the Trans Fly Savanna and Grasslands Ecoregion of New Guinea island. Here, we provide the first report of one of the Australian species, Neobidessodes mjobergi (Zimmermann, 1922), from the same region of New Guinea. We suggest that more focused research will reveal the occurrence of far more Australian diving beetle species in that region of New Guinea.

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Ukem, BO. "Responses of sorghum to combined application of a nutrient solution and solid NPK fertilizers." Journal of Agriculture, Forestry and the Social Sciences 11, no. 2 (2015): 248–57. http://dx.doi.org/10.4314/joafss.v11i2.29.

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In the savanna soil of Nigeria, micronutrient deficiency was not noticed in the past but with the intensification of agriculture over the years, crop exploitation of soil available nutrients, crop removal and adverse cultural practices of farmers have led to the incidence of micronutrient deficiency with negative effect on growth, yield and quality of crops. To enhance micronutrient availability, use and use efficiency to crops, a field experiment was set up on sorghum at Samaru in the Northern Guinea Savanna of Nigeria with foliar Algifol (Alg) nutrients solution and NPK. The objectives of th

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Surbakti, Suriani, Michael Balke, and Lars Hendrich. "Discovery of the Australian diving beetle Neobidessodes mjobergi (Zimmermann, 1922) in New Guinea (Coleoptera, Dytiscidae, Hydroporinae)." Check List 17, no. (2) (2021): 633–36. https://doi.org/10.15560/17.2.633.

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The diving beetle genus <em>Neobidessodes </em>Hendrich & Balke, 2009 contains 10 species. Nine of them were considered endemic to Australia, one of them to the Trans Fly Savanna and Grasslands Ecoregion of New Guinea island. Here, we provide the first report of one of the Australian species, <em>Neobidessodes mjobergi</em> (Zimmermann, 1922), from the same region of New Guinea. We suggest that more focused research will reveal the occurrence of far more Australian diving beetle species in that region of New Guinea.

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Marshall, Adrian G., and R. Moylan Gambles. "Odonata from the Guinea Savanna Zone in Ghana." Journal of Zoology 183, no. 2 (2009): 177–87. http://dx.doi.org/10.1111/j.1469-7998.1977.tb04180.x.

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McGregor, Ross M., Ulf Ottosson, and Will RL Cresswell. "Moult of Guinea savanna passerines in West Africa." Ostrich 78, no. 2 (2007): 287–90. http://dx.doi.org/10.2989/ostrich.2007.78.2.26.106.

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S. Hamisu, H., S. G. Ado, M. Y. Yeye, et al. "Heterosis for Fruit Yield and Heat Tolerance Traits in Tomato (Lycopersicon Lycopersicum Mill.) Under Field Conditions." Journal of Agricultural Studies 5, no. 4 (2018): 48. http://dx.doi.org/10.5296/jas.v6i2.13047.

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Field experiments were conducted at the National Horticultural Research Institute, Bagauda in the Sudan Savannah and Institute for Agricultural Research, Samaru in the Northern Guinea Savanna ecological zones of Nigeria between July-October, 2014 rainy season to estimates heterosis for fruit yield and heat tolerance traits of tomato under field conditions. The experiment comprised two heat tolerant (Icrixina and Rio Grande) and four heat susceptible tomato (Tima, Tropimech, Petomech and Roma Savana) which were crossed using half diallel mating design in the screen house. The resultant 15 hybri

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Doumtsop, Armand R. P. F., Rachid Hanna, Maurice Tindo, et al. "Geographic distribution and abundance of the Afrotropical subterranean scale insect Stictococcus vayssierei (Hemiptera: Stictococcidae), a pest of root and tuber crops in the Congo basin." Bulletin of Entomological Research 110, no. 2 (2019): 293–301. http://dx.doi.org/10.1017/s0007485319000658.

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AbstractStictococcus vayssierei is a major pest of root and tuber crops in central Africa. However, data on its ecology are lacking. Here we provide an updated estimate of its distribution with the aim of facilitating the sustainable control of its populations. Surveys conducted in nine countries encompassing 13 ecological regions around the Congo basin showed that African root and tuber scale was present in Cameroon, Central African Republic, Congo, Democratic Republic of Congo, Equatorial Guinea, Gabon and Uganda. It was not found on the sites surveyed in Chad and Nigeria. The pest occurred

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Samoura, Demba Aïssata, Bolanle Wahab, Olalekan John Taiwo, Alpha Issaga Pallé Diallo, and Ahmed Younis Ibrahim Younis. "Progress and challenges of Guinea’s national service of risk management in building climate-induced disasters’ resilience in Guinea Savanna communities." Journal of Applied and Natural Science 14, no. 4 (2022): 1400–1412. http://dx.doi.org/10.31018/jans.v14i4.3973.

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The increased frequency and magnitude of climate-induced disasters are a huge setback for the world’s economic growth and performance. Addressing such risks has long time motivated many governments to set up disaster-based management strategies, policies, and plans to strengthen their resilience. However, the implementation of such initiatives remains challenging in developing countries due to their specific internal development issues that require timely performance appraisals to offer suitable remedial actions. This motivated the present study to use the Risk Management Index (RMI), to measu

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Matsumoto, Ryo, Asrat Asfaw, David De Koeyer, et al. "Variation in Tuber Dry Matter Content and Starch Pasting Properties of White Guinea Yam (Dioscorea rotundata) Genotypes Grown in Three Agroecologies of NIGERIA." Agronomy 11, no. 10 (2021): 1944. http://dx.doi.org/10.3390/agronomy11101944.

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The primary objective of this study was to assess the effects of genotype (G), location (L), and G × L interaction on tuber quality traits (dry matter content and starch pasting parameters) in white Guinea yam (Dioscorea rotundata Poir.). Variability in tuber dry matter and starch pasting properties was examined using 18 advanced breeding lines and two dominant landrace cultivars of white Guinea yam grown in three different agroecological zones (forest‒savanna transition, southern Guinea savanna, and rainforest) in Nigeria. The starch pasting properties were evaluated using a Rapid Visco Analy

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Fairhead, James, and Melissa Leach. "Enriching the landscape: social history and the management of transition ecology in the forest–savanna mosaic of the Republic of Guinea." Africa 66, no. 1 (1996): 14–36. http://dx.doi.org/10.2307/1161509.

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AbstractThe mosaic of forest and savanna vegetation found along the northern margin of West Africa's moist forest zone has generally been understood in policy circles as a degraded and degrading forest landscape, following savannisation by its farming populations. Some ecologists have suggested that the vegetation mosaic may, however, be more stable, determined by soil differences, and others still that forest may be encroaching on savanna as a result of long-term climatic rehumidification. This article presents historical evidence from Kissidougou which shows that, contrary to scientific and

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Orijemie, Emuobosa Akpo. "Late Holocene Palaeoenvironment of TSE Dura, a Later Stone Age (Lsa) Rock Shelter, North-Central Nigeria." Studia Quaternaria 35, no. 1 (2018): 41–53. http://dx.doi.org/10.2478/squa-2018-0003.

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Abstract Palynological and archaeobotanical analyses were conducted on excavated sediments from Tse Dura, a Later Stone Age rock shelter in north-central Nigeria with the aim of reconstructing the environment conditions at the site within the last millennium. From 933 ± 29 BP to 802 ± 29 BP, the environment alternated between Guinea savanna with dry conditions, and secondary and riverine forests with humid conditions. During these periods of environmental fluctuations, the LSA populations engaged in the management of economic plants the most significant of which included Dioscorea spp. Pennise

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Morimura, Naruki, Gaku Ohashi, and Tetsuro Matsuzawa. "A Survey of the Savanna Vegetation in Bossou, Guinea." Pan Africa News 21, no. 2 (2014): 22–24. http://dx.doi.org/10.5134/192910.

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Morimura, Naruki, Gaku Ohashi, and Tetsuro Matsuzawa. "A Survey of the Savanna Vegetation in Bossou, Guinea." Pan Africa News 21, no. 2 (2014): 22–24. http://dx.doi.org/10.5134/192911.

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Abraham, Martey, Richard Osei, Isaac Kodzo Amegbor, and Israel K. Dzomeku. "Response of Upland New Rice for Africa (NERICA) to Nitrogen Fertilization in the Guinea Savannah Agro-ecological Zone." Asian Research Journal of Agriculture 17, no. 2 (2024): 196–205. http://dx.doi.org/10.9734/arja/2024/v17i2437.

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The trial was conducted during the cropping season of 2020 June to November on the upland field of the Savanna Agricultural Research Institute (SARI), at Nyankpala near Tamale in the Northern Region of Ghana. The objective was to establish the response of Upland New Rice for Africa (NERICA) to nitrogen fertilization in the Guinea Savannah Agroecological Zone. Two upland NERICAs were used. A 2×2×5 factorial experiment was laid out in Randomized Complete Block Design (RCBD) in three replications. The Phosphorus and Nitrogen fertilizers rates were 0, 60 kg P/ha and 0, 30, 60, and 120 kg N/ha resp

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Kadafur, Ibrahim Mohammed, Yusuf Lawal Idrisa, and Abbas Shehu. "Adoption of improved maize varieties in northern Guinea Savannah of Borno State, Nigeria." Journal of Agricultural Extension 24, no. 1 (2020): 34–41. http://dx.doi.org/10.4314/jae.v24i1.4.

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This study examined the adoption of improved maize varieties in northern Guinea Savanna of Borno State. Primary data were collected by using structured interview schedule. Two hundred maize farmers were systematically selected from. Percentage and logit were used for data analyses. Overall adoption rate was 89.0%. Coefficient of socio-economic and institutional factors such as extension contact (0.0360), farm size (0.2319), education level (0.0460), access to credit (0.6363) and age (0.7619) were found to be significant (P≤0.01) and positively influencing adoption of improved maize varieties.

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Inusah, Baba I. Y., Wilson Dogbe, Alhassan Lansah Abdulai, Julius Yirzagla, Michael Mawunya, and Abu Safiyanu Issahak. "Yield Gap Survey in Sudanno-Guinea Savanna Agro-Ecological Zones of Ghana." Sustainable Agriculture Research 4, no. 1 (2015): 127. http://dx.doi.org/10.5539/sar.v4n1p127.

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<p>Yield gap survey (YGS) was carried out in nine selected communities in the Sudanno-Guinea Savannah (SGS) rice growing ecologies of Ghana in the 2012 and 2013 cropping seasons. One lead farmer was selected from each community to host researcher-managed fields. The specific objectives of the study were to determine the causes of yield gaps in rain fed and irrigated ecologies of the SGS of Ghana and to suggest ways by which the gaps can be bridged to enhance the production of the crop in Ghana</p> <p>In both 2012 and 2013 seasons, farmers in the Sudan savannah zone recorded h

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Ajala, M. K., O. S. Lamidi, and S. M. Otaru. "Peri-Urban Small Ruminant Production in Northern Guinea Savanna, Nigeria." Asian Journal of Animal and Veterinary Advances 3, no. 3 (2008): 138–46. http://dx.doi.org/10.3923/ajava.2008.138.146.

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Cumberlidge, Neil. "Sudanonautes kagoroensis, a new species of freshwater crab (Decapoda: Potamoidea: Potamonautidae) from Nigeria." Canadian Journal of Zoology 69, no. 7 (1991): 1938–44. http://dx.doi.org/10.1139/z91-268.

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A freshwater crab, Sudanonautes kagoroensis n.sp., is described and illustrated on the basis of 57 specimens from seven localities in the guinea savanna zone of central Nigeria. The taxonomic relationship of S. kagoroensis to other freshwater crabs from Nigeria belonging to this genus is discussed and its ecology and distribution are described. Seven species of Sudanonautes Bott, 1955 are now known from Nigeria.

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Nsed Ayip Akonjom, John Iyang Umuji, and Ukoette Jeremiah Ekah. "Performance evaluation of polycrystalline photovoltaic modules in a Guinea Savanna and Mangrove swamp." World Journal of Advanced Engineering Technology and Sciences 4, no. 1 (2021): 011–21. http://dx.doi.org/10.30574/wjaets.2021.4.1.0081.

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This central idea of this research is to investigate how voltage, current, power output and efficiency of polycrystalline photovoltaic (PV) modules installed in a Guinea Savanna and Mangrove Swamp is affected by temperature, relative humidity and irradiance. The study locations are Calabar (mangrove swamp) and Ogoja (guinea savanna), in Cross River State, Nigeria. Two polycrystalline PV modules of exact specification mounted on a platform one-metre-high above the ground were used. A digital solar power meter (SM206) and a digital solar flux meter (MS 6616) was used to monitor and measure solar

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Alih Raphael A, Solomon Shola Gabriel, Olufeagba Samuel Olabode, et al. "Morphological Characterisation of Three Populations of <i>Heterobranchus longifilis</i> from Nigeria." Tropical Life Sciences Research 35, no. 1 (2024): 159–76. http://dx.doi.org/10.21315/tlsr2024.35.1.9.

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This study attempted to discriminate the population of Heterobranchus longifilis in Nigeria using their morphological characteristics. Therefore, 60 sexually mature wild samples of H. longifilis (1:1 for the male and female ratio) of relatively similar size (40 cm) were collected from three eco-regions namely, Guinea Savanna (Benue River, Makurdi), Rainforest Savanna (Niger River, Onitsha) and Sahel Savanna (Rima River, Sokoto). They were transported to the hatchery unit of the Fisheries and Aquaculture Department, Joseph Sarwan Tarka University Makurdi where the morphometric data was collecte

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EB, Idisi, Lawal O, and Deekor TN. "Temporal Trends in Vegetation Health across Ecological Zones of South-South Region of Nigeria (2000-2020)." International Journal of Advanced Multidisciplinary Research and Studies 4, no. 6 (2024): 453–68. http://dx.doi.org/10.62225/2583049x.2024.4.6.3460.

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This study analyzes temporal trends in vegetation health across South-South Nigeria’s ecological zones from 2000 to 2020, using the Normalized Difference Vegetation Index (NDVI) as a key metric. The research investigates changes in vegetation density and vigor within rainforest, derived savanna, freshwater swamp, mangrove, and Guinea savanna zones, linking observed patterns to climatic variability and human activities. NDVI data from MODIS satellites, alongside climate data on rainfall, temperature, and soil moisture, were processed using ArcGIS 10.5 to evaluate spatiotemporal vegetation dynam

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Oteng-Frimpong, Richard, Solomon Pigangsoa Konlan, and Nicholas Ninju Denwar. "Evaluation of Selected Groundnut (Arachis hypogaea L.) Lines for Yield and Haulm Nutritive Quality Traits." International Journal of Agronomy 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/7479309.

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Groundnut, the most important grain legume in Ghana, is largely cultivated under rainfed conditions within the Guinea savanna zone of the country. The pods and haulms are important sources of income for smallholder farmers in the region. There is an emerging market for groundnut haulms as livestock feed in Ghana. A population of 30 groundnut genotypes were evaluated for yield (pod and haulm) and its components as well as good haulm nutritive value. High significant differences were observed among the genotypes for all agronomic traits. Average pod yield ranged from 1.6 to 5.7 t/ha with SAMNUT

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Yakubu, Abdulmojeed, Praise Jegede, Mathew Wheto, et al. "Multivariate characterisation of morpho-biometric traits of indigenous helmeted Guinea fowl (Numida meleagris) in Nigeria." PLOS ONE 17, no. 6 (2022): e0261048. http://dx.doi.org/10.1371/journal.pone.0261048.

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This study was conducted to characterise phenotypically helmeted Guinea fowls in three agro-ecologies in Nigeria using multivariate approach. Eighteen biometric characters, four morphological indices and eleven qualitative physical traits were investigated in a total of 569 adult birds (158 males and 411 females). Descriptive statistics, non-parametric Kruskal–Wallis H test followed by the Mann–Whitney U and Dunn-Bonferroni tests for post hoc, Multiple Correspondence Analysis (MCA), Univariate Analysis, Canonical Discriminant Analysis, Categorical Principal Component Analysis and Decision Tree

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Nyadzi, Emmanuel, Mathew I. S. Ezenwa, Benjamin K. Nyarko, A. A. Okhimamhe, Thomas T. Bagamsah, and Francis O. Okelola. "Assessment of Trace Gas Emissions From Wild Fires in Different Vegetation Types in Northern Ghana: Implications for Global Warming." Environment and Natural Resources Research 5, no. 2 (2015): 37. http://dx.doi.org/10.5539/enrr.v5n2p37.

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Biomass burning in Northern Ghana is a major cause for concern because of its potential contribution to global warming, hence climate change. This study assessed the emission of trace gases from human activities in the Guinea savanna of Northern Ghana using the guidelines of the Intergovernmental Panel on Climate Change. Carbon content of biomass was determined from four different vegetation covers in the study area; namely, widely open savanna woodland, grass/herb with scattered trees, open savanna woodland and closed savanna woodland. Under each vegetation cover, five plots (1 m x 1 m) were

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Haruna, Abdulai, James Matent Kombiok, Askia Musah Mohamed, Joseph Sarkodie-Addo, Asamoah Larbi, and Nurudeen Abdul Rahman. "Profitability of Cowpea Intercropped With Maize in West Africa Guinea Savanna." Journal of Agricultural Science 10, no. 11 (2018): 185. http://dx.doi.org/10.5539/jas.v10n11p185.

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An on-farm trial was conducted over a 2-year period in Tibali in the Savelugu district of Northern region of Ghana to evaluate the productivity and economic returns of hybrid and open pollinated maize (OPV) either in pure stands or intercropped with erect and trailing cowpea. The maize varieties used were medium maturing (110 days) whie the cowpea varieties were early maturiing (70 days). The experiment was conducted in a randomized complete block design with 14 treatments (sole pan53, sole Etubi, sole mamaba, sole obatampa, sole erect cowpea, sole trailing cowpea, erect cowpea + pan53, erect

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Daudu, C. K., E. Uyovbisere, E. Iwuafor, and O. E. Asiribo. "Decomposition Patterns of Selected Organic Materials in the Nigerian Guinea Savanna." International Journal of Soil Science 1, no. 2 (2006): 118–27. http://dx.doi.org/10.3923/ijss.2006.118.127.

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Fernandes, Patrick Bezerra, Tiago do Prado Paim, Luizmar Peixoto dos Santos, et al. "Optimal Time for Haymaking and Potential Production of Grass Hay on Soybean Overseeding in Brazilian Savanna." Agronomy 13, no. 12 (2023): 3046. http://dx.doi.org/10.3390/agronomy13123046.

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The objective of this research was to determine the potential for hay production of Quenia guinea grass (Megathyrsus maximus cv. BRS Quenia), Congo grass (Urochloa ruziziensis), and Xaraes palisade grass (Urochloa brizantha cv. Xaraes) following soybean cultivation (Glycine max) in the Brazilian Cerrado. The experimental field was divided into 12 plots, with 4 replicates of each grass species. Chemical composition, forage mass (FM), and the potential for milk and carcass production were determined for the three grasses. Principal component analysis showed that the total digestible nutrients (T

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Sangoyomi, T. E., E. J. A. Ekpo, and R. Asiedu. "First Report of Nattrassia mangiferae as a Postharvest Fungal Pathogen of White Yam (Dioscorea rotundata) in Nigeria." Plant Disease 86, no. 8 (2002): 919. http://dx.doi.org/10.1094/pdis.2002.86.8.919a.

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A survey of the yam growing areas of Nigeria was conducted in January 1999 to identify the major fungal pathogens responsible for considerable tuber rot losses in storage. A total of 150 tubers of white yam showing rot symptoms were collected from 30 barns at 18 locations spanning three agroecologies (guinea savanna, forest/savanna transition, and forest) within the yam belt of Nigeria. Tuber pieces were cut at the interface between healthy and infected tissue, surface-sterilized in 10% bleach solution (0.05% sodium hypochlorite), rinsed in sterile distilled water, and plated on potato dextros

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Kapu, M. M. "The Natural Forages of Northern Nigeria I. Nitrogen and Mineral composition of Grasses and Browse from the Northern Guinea Savanna and Standing Hays from the different Savanna Zones." Nigerian Journal of Animal Production 2, no. 2 (2021): 235–46. http://dx.doi.org/10.51791/njap.v2i2.2163.

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THE mineral status of nine native grass species and ten browse species from the Northern Guinea Savanna Vegetation was investigated together with the mineral Composition of standing hays from Daura and Kano areas of the Sudan Savanna, Bauchi ranch of the sub-Sudan, Samaru (Shika Kadama) of the Northern Guinea Savanna and Jos area of the Plateau vegetation, in Northern Nigeria. All forage types (grasses, browse and standing hays) which were sampled in April of 1975 were analysed for nitrogen (N), Phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na), zinc (Zn) and copper (Cu)

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Okutu, Chiweta, Ahmed Abdullahi, Jane Oyidiya, and Jacob Olatunde. "Response of grain amaranth (Amaranthus cruentus L.), to method and rate of cattle kraal manure application at Kadawa and Samaru in Nigeria." Journal of Agricultural Sciences, Belgrade 56, no. 3 (2011): 173–86. http://dx.doi.org/10.2298/jas1103173o.

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Field experiments were conducted between June and October 2010 wet season at two different locations. The first was at the Horticultural Research Garden of the Institute for Agricultural Research (IAR), Samaru in the Northern Guinea Savanna agro-ecological zone and the second experiment was conducted at the Research Farm of the Irrigation Research Sub-Station (IRS), Kadawa in the Sudan Savanna agro-ecological zone also of the Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria to evaluate the response of grain amaranth growth and green edible vegetable yield components

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Imolehin, E. D. "Rice Diseases in the Southern Guinea Savanna Zone on Niger State, Nigeria." International Rice Research Newsletter 14, no. 3 (1989): 37–38. https://doi.org/10.5281/zenodo.7146874.

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This article 'Rice Diseases in the Southern Guinea Savanna Zone on Niger State, Nigeria' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

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KAMARA, ALPHA Y., ABDULLAHI I. TOFA, TEMITOPE ADEMULEGUN, et al. "MAIZE–SOYBEAN INTERCROPPING FOR SUSTAINABLE INTENSIFICATION OF CEREAL–LEGUME CROPPING SYSTEMS IN NORTHERN NIGERIA." Experimental Agriculture 55, no. 1 (2017): 73–87. http://dx.doi.org/10.1017/s0014479717000564.

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SUMMARYField studies were conducted during the 2014 and 2015 wet seasons at Zaria in the northern Guinea savanna and at Iburu in the southern Guinea savanna of Nigeria to determine the productivity of maize–soybean intercropping system. There were four treatment combinations in the experiment: sole maize; sole soybean; maize spaced at 50 cm and intercropped with soybean; and maize spaced at 65 cm and intercropped with soybean. The experiment was laid out in a randomized complete block design with three replications. The results showed that sole cropped maize and soybean generally outperformed

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Eseigbe, Osagie B., Alpha Y. Kamara, Sani Miko, et al. "The Impact of Planting Dates on the Performance of Soybean Varieties [Glycine max (L.) Merr.] in the Nigerian Savannas." Agronomy 14, no. 10 (2024): 2198. http://dx.doi.org/10.3390/agronomy14102198.

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Increasing delays in the onset of the rainy season and extended dry spells in the Nigerian savannas are complicating the determination of optimal planting dates for rain-fed crops, which increases risks for farmers. This study evaluated the impact of planting dates on soybean [Glycine max (L.) Merr.] performance to identify optimal planting dates for different soybean varieties in two agroecological zones (AEZs) of Nigeria. The study involved six planting dates (15 June, 22 June, 29 June, 6 July, 13 July, and 20 July) and three soybean varieties (TGX-1835-10E, TGX-1951-3F, TGX-1904-6F). Result

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FANTHORPE, RICHARD. "LIMBA ‘DEEP RURAL’ STRATEGIES." Journal of African History 39, no. 1 (1998): 15–38. http://dx.doi.org/10.1017/s0021853797007135.

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The established historical view of the Upper Guinea Coast is that this naturally forested region was at first peripheral to the Manding civilization of the savanna zone. The arrival of Europeans on the coast in the fifteenth century then engendered a southward shift in the centre of gravity of historical processes. The Atlantic trade, in which the savanna states were also deeply involved, gave coastal populations vastly expanded opportunities for wealth accumulation and social mobility. In spite of numerous attempts at political centralization, ‘frontier’ conditions persisted in the region up

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AI, Sodimu. "Medicinal Utilization of Water Melon (Citrillus Lanatus) in Different Parts of Kaduna Southern Guinea Savanna of Nigeria." Journal of Natural & Ayurvedic Medicine 4, no. 1 (2020): 1–6. http://dx.doi.org/10.23880/jonam-16000232.

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Proximate and medicinal utilization of watermelon (Citrillus lanatus) was examined in different parts of Kaduna Southern Guinea Savanna of Nigeria. Two hundred (200) questionnaires were randomly administered and one hundred and eighty-five (185) were retrieved. The results showed that watermelon can be used in the treatment and prevention of various diseases such as eye problems, skin disease, hypertension; reduce formation of kidney stones, renal stones, urinary stones, cough and catarrh, tuberculosis and many more. Majority (33.5%) of the respondents used grinding methods in preparing the se

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