Norman, Prince Emmanuel

Publications

(1) Lahai, M.T., Alpha, M.G., Boima, B., & Norman, P.E. (2006). Effect of time of Debudding and planting density on the growth and yield of okra during the wet and dry seasons. Journal of Pure and Applied Science, 10, 79-86.

(2) Norman, P.E., Tongoona, P., & Shanahan, P.E. (2011). Diversity of morphological traits of yam (Dioscorea spp.) genotypes from Sierra Leone. Journal of Applied Biosciences 45: 3045–3058.https://www.semanticscholar.org/paper/Diversity-of-the-morphological-traits-of-yam-spp.%29-Norman-Tongoona/f594a878196196eb30a1d4fc5d523cd65cbeba19

(3) Norman, P.E., Tongoona, P., & Shanahan, P.E. (2011). Determination of interrelationships among agro-morphological traits of yams (Dioscorea spp.) using correlation and factor analyses. Journal of Applied Biosciences, 45, 3059–3070. at www.biosciences.elewa.org or https://www.semanticscholar.org/paper/Determination-of-interrelationships-among-agro-of-Norman-Tongoona/568f8f328506e97c8ced71fa61c9fc0456cb619e

(4) Norman, P.E., Tongoona, P., & Shanahan, P.E. (2012). Determination of associations between three morphological and two cytological traits of yams (Dioscorea spp.) using canonical correlation analysis, African Journal of Agricultural Research, 7(17), 2674–2678. DOI: 10.5897/AJAR11.1299

(5) Norman, P.E., Tongoona, P., & Shanahan, P.E. (2012). Diversity in chromosome number and raphide morphology of yam (Dioscorea spp.) genotypes from Sierra Leone. African Journal of Plant Science, 6(4), 157–160. DOI:10.5897/AJPS11.247

(6) Norman, P.E., Tongoona, P., Danson, J., & Shanahan, P.E. (2012). Molecular characterization of some cultivated yam (Dioscorea spp.) genotypes in Sierra Leone using simple sequence repeats. International Journal of Agronomy and Plant Production, 3(8), 265–273. http://ijappjournal.com/.../265-273.pdf

(7) Sesay, L., Norman, P.E, Massaquoi, A., Kobba, F., Allieu, A.P, Gboku, M.L., & Fomba, S.N. (2013). Assessment of farmers’ indigenous knowledge and selection criteria of yam in Sierra Leone. Sky Journal of Agricultural Research 2(1): 1–6. http://www.skyjournals.org/SJAR

(8) Beah, A.A., Norman, P.E., Scholberg, J.C., Lantinga, E.A., & Conteh, A.R. (2014). Effect of green manures on nitrogen uptake and yield of cauliflower (Brassica oleracea var. botrytis). International Journal of Applied Agricultural Research, 9(1), 73–84. http://www.ripublication.com

(9) Norman, P.E., Beah, A.A, Samba, J.A., Tucker, M.J., Lissa, J., Koroma, F., Benya, M.T., & Fomba, S.N. (2014). Agro-phenotypic characterization of sweet potato (Ipomoea batatas L.) genotypes using factor and cluster analyses. Agricultural Science Research Journals, 4(2), 30-38. Available online at http://www.resjournals.com/ARJ

(10) Beah, A.A., Norman, P.E., Scholberg, J.C., Lantinga, E.A., & Conteh, A.R. (2014). Effect of organic manures on soil bio-physical properties and dry matter partitioning in cauliflower, International Journal of Plant and Soil Sciences, 3(9), 1044–1054.DOI:10.9734/IJPSS/2014/11256

(11) Beah, A.A., Norman, P.E., Scholberg, J.C., Lantinga, E.A., & Conteh, A.R. (2015). Effect of Organic Manure on Nitrogen Mineralization, Nitrogen Accumulation, Nitrogen Use Efficiency and Apparent Nitrogen Recovery of Cauliflower (Braccica oleracea L., var. Botrytis). International Journal of Plant and Soil Sciences, 4(3), 265–272.  http://www.sciencedomain.org/review-history/6552

(12) Norman P.E., Whyte, J.B.A., Samura, A.E., Massaquoi, A., Sesay, L., Dixon, A.G.O., Fomba, S.N., Benya, M.T., & Sowa, M.M. (2015). Effect of staking and non-staking systems on disease severity, yield and quality attributes of yams (Dioscorea alata). Journal of Agriculture and Ecology Research International, 2(4), 219–229.DOI:10.9734/JAERI/2015/14713

(13) Norman P.E., Bebeley, J.F., Beah, A.A., & Sellu, E.F. (2015). Assessment of agro-morphological diversity and affinities in cocoyam species from Sierra Leone. International Journal of Biodiversity and Conservation, 7(10), 408–419. DOI: 10.5897/IJBC2015.0883

(14) Sesay, J.V., Ayeh, K.O., Norman, P.E., & Acheampong, E. (2016). Shoot nodal cultureand virus indexing of selected local and improved genotypes of cassava (Manihot esculenta) from Sierra Leone. International Journal of Biotechnology and Molecular Biology Research, 7(2), 20–28. https://doi.org/10.5897/IJBMBR2015.0245

(15) Kroma, S., Norman, P.E., Barrie, A.U., & Norman, S.Y. (2016). Efficacy of chicken manure on the growth, yield and profitability of maize in the upland and inland valley swamp of Sierra Leone. International Journal of Sciences, 5(11), 7–13. DOI: 10.18483/ijSci.1116

(16) Norman, P.E., Asfaw, A., Tongoona, P.B., Danquah, A., Danquah, E.Y., Koeyer, D.D., & Asiedu, R. (2018). Can parentage analysis facilitate breeding activities in root and tuber crops? Agriculture Journal, 8(95), 1–24. https://dx.doi.org/10.3390/agriculture8070095

(17) Norman, P.E., Asfaw, A., Tongoona, P.B., Danquah, A., Danquah, E.Y., De Koeyer, D.,& Asiedu, R. (2018). Pollination success in some white yam genotypes under polycross and nested mating designs. International Journal of Biological Sciences and Applications, 5(2): 19–28. https://www.aascit.org/journal/ijbsa

(18) Asfaw, A., Aderonmu, S.D., Norman, P.E., Darkwa, K., De Koeyer, D., Paterne Agre, Kouaku, A., Chamber, E., Otoo, E., Obidiegwu, J., Nwanchukwu, E., Dossou-Aminon, I.N., Dansi, A., Oselebe, H., Adebola, P., & Asiedu, R. (2019). Application of predictive breeding in yam improvement for West Africa. Research for Tropical Agriculture, 12(2): 177–120. https://www.jstage.jst.go.jp/article/nettai/12/1/12_43/_article/-char/en

(19) Karim, K.Y., Ifie, B., Dzidzienyo, D., Danquah, E.Y., Blay, E.T., Whyte, J.B.A., Kulakow, P., Rabbi, I., Parkes, E., Omoigui, L., Norman, P.E., & Iluebbey, P. (2020). Genetic characterization of cassava (Manihot esculenta Crantz) genotypes using agro-morphological and single nucleotide polymorphism markers. Physiology and Molecular Biology of Plants, 26(2): 317–330 https://doi.org/10.1007/s12298-019-00740-x

(20) Norman, P.E., Paterne, A.A., Danquah, A., Tongoona, P.B., Danquah, E.Y., De Koeyer, D., Ikeogu, U.N., Asiedu, R., & Asfaw, A. (2020). Paternity Assignment in White Guinea Yam (Dioscorea rotundata) Half-Sib Progenies from Polycross Mating Design Using SNP Markers. Plants, 2020, 9, 527; https://doi:10.3390/plants9040527.

(21) Karim, K.Y., Norman, P.E., Dzidzienyo, D., Ifie, B., Kulakow, P., Rabbi, I., Omoigui, L., & Parkes, E. (2020). Gene action analysis studies for agronomic traits in cassava (Manihot esculenta Crantz) genotypes developed using line by tester mating design. African Journal of Agricultural Research, 16(10): 1471–1479.doi:10.5897/AJAR2020.14797

(22) Norman, P.E., Danquah, A., Asfaw, A., Tongoona, P.B., Danquah, E.Y., & Asiedu, R. (2020). Seed Viability, Seedling Growth and Yield in White Guinea Yam. Agronomy Journal, 11(2): 1–10. https://dx.doi.org/10.3390/agronomy11010002

(23) Norman, P.E., Tongoona, P.B., Danquah, A., Danquah, E.Y., Asiedu, R., Agbona, A. & Asfaw, A. (2021). Genetic parameter estimation and selection in advanced breeding population of white Guinea yam. Journal of Crop Improvement35(6): 790-815. https:// doi.org/10.1080/15427528.2021.1881012

(24) Bebeley, H.A., Mabey, P.T., & Norman, P.E. (2021). Effects of Biochar, Plant Density and Spacing on Growth and Yield of Rice in a Tropical Inland Valley Swamp. International Journal of Applied Agricultural Sciences, 7(2): 77–83. https://doi.org/10.11648/j.ijaas.20210702.11

(25) Karim, K.Y. & Norman, P.E. (2021). Genotype × Environment Interaction and Stability Analysis for Selected Agronomic Traits in Cassava (Manihot esculenta). International Journal of Environmental & Agriculture Research (IJOEAR), 7(8): 17–28.DOI: https://dx.doi.org/10.5281/zenodo.5336002

(26) Samai, M.A., Kassoh, F.A., Kroma, S., Norman, P.E., & Bah, M.A. (2021). Effect of time and proportion of leaf harvest on pest, forage and root yields of sweetpotato (Ipomoea batatas L.) in the inland valley swamp and upland ecologies of Njala. International Journal of Environmental & Agriculture Research (IJOEAR), 7(9), 7–15.DOI:https://dx.doi.org/10.5281/zenodo.5536337

(27) Agre, P.A., Norman, P.E., Asiedu, R., & Asfaw, A. (2021). Identification of Quantitative Trait Nucleotides and Candidate Gene for Tuber Yield and Mosaic Virus Tolerance in an Elite Population of White Guinea Yam (Dioscorea rotundata) using Genome-wide Association Scan.BMC Plant Biology, 21:552. https://doi.org/10.1186/s12870-021-03314-w.

(28) Sesay, M.E., Kanu, E.M., Bagla, V.P., & Norman, P.E. (2021). Prevalence of Brucella abortus in Cattle in the Njala and Newton Ranches of Sierra Leone Using Serological Analysis. Animal and Veterinary Sciences, 9(6): 191–195. doi:10.11648/j.avs.20210906.15

(29) Norman, P.E., Kawa, M.S., & Karim, K.Y. (2022). Effect of Pot Size and Transplanting Date on Tuber Production Using Micro-Tubers of White Yam. Journal of Modern Agriculture and Biotechnology, 1(1):3.DOI:https://www.doi.org/10.53964/jmab.2022003

(30) Barrie, A.U., Norman, P.E., & George, M. (2022). Genetic Parameter Estimates and Diversity Studies of Upland Rice (Oryza sativa L.) Genotypes Using Agro-morphological Markers.International Journal of Agronomy and Agricultural Research(IJAAR), 20(1): 11–23. http://www.innspub.net

(31) Norman, P.E., & Tongoona, P.B. (2022). Genetic parameter estimates and improvement of yam for tuber yield, quality and related attributes: A review. International Journal of Botany Studies, 7(4), 41–49. www.botanyjournals.com

(32) Kanu, M.S., Norman, P.E., & Boima, J.N.S. (2022). Investigating the effect of different rates of chicken manure on the growth, yield and profitability of cowpea (Vigna unguiculata L. Walp) under rain fed condition in the upland soils of Njala, southern Sierra Leone. International Journal of Science and Research, 11(5): 1486–1498. doi:10.21275/SR22101145148.

(33) Norman, P. E., Tongoona, P. B., Danquah, A., Danquah, E. Y., Agre, P. A., Agbona, A., Asiedu, R., & Asfaw, A. (2022). Genetic analysis of agronomic and quality traits from multi-location white yam trials using mixed model with genomic relationship matrix. Global Journal of Botanical Science, 10: 8–22.

(34) Norman, P.E., Agre, P.A., Asiedu, R., & Asfaw, A. (2022). Multiple-Traits Selection in White Guinea Yam (Dioscorea rotundata) Genotypes. Plants, 11, 3003. https://doi.org/10.3390/ plants11213003

(35) Bogba, C., Norman, P.E., Kassoh, F.A., & Kroma, S. (2022). Effect of Leaf Harvest Intensity and Frequency on Sweet Potato Weevil (Cylas puncticollis) Infestation, Yield and Quality Traits of Sweet Potatoes (Ipomoea batatas L.). Journal of Modern Agriculture and Biotechnology, 1(4), 19. DOI: 10.53964/jmab.2022019.

(36) Norman, P.E., Norman, Y.S.G.E., & Bebeley, J.F. (2022). Agronomic and Economic Parameter Estimates of Cocoyam as Influenced by Fertilizer and Environment. American Journal of Agricultural and Biological Sciences, 17(1), 79-89.DOI: 10.3844/ajabssp.2022.79.89

(37) Sesay, J.V., Lebbie, A., Wadsworth, R., Nuwamanya, E., Bado, S., & Norman, P.E. (2023). Genetic Structure and Diversity Study of Cassava (Manihot esculenta) Germplasm for African Cassava Mosaic Disease and Fresh Storage Root Yield. Open Journal of Genetics, 13(1), 23-47. https://doi.org/10.4236/ojgen.2023.131002

(38) Torto, S., Samura, A., Sundufu, A., Quee, D., Musa, D., Kanu, S., Fomba, S., & Norman, P. (2023). Grasshopper (Zonocerus variegatus L) Infestation and Root Dry Matter Content of Cassava as Influenced by Planting Date and Cassava Genotypes. Peruvian Journal of Agronomy, 7(1), 42-50. https://doi.org/10.21704/pja.v7i1.2001

(39) Karim, K. Y., & Norman, P. E. (2023). Perceived Knowledge of Cassava Value Chain Actors on Varietal Preferences for Various End Uses. Discoveries in Agriculture and Food Sciences, 11(3), 01-21. DOI:10.14738/dafs.113.14568

(40) Sumana, S.L, Tarawallie, S., & Norman, P.E. (2023). Challenges in Developing Aquaculture for Livelihood Enhancement in Bo City, Southern Sierra Leone. International Journal of Fisheries and Aquaculture Research, 9(1), 1-13. https://doi.org/10.37745/ijfar.15/vol9n1113

(41) Saquee, F.S., Norman, P.E., Saffa, M.D., Kavhiza, N.J., Pakina, E., Zargar, M., Diakite, S., Stybayev, G., Baitelenova, A., & Kipshakbayeva, G. (2023). Impact of different types of green manure on pests and disease incidence and severity as well as growth and yield parameters of maize. Heliyon, 9(6), e17294. https://doi.org/10.1016/j.heliyon.2023.e17294

(42) Torto, S.J., Samura, A.E., Norman, P.E., Sundufu, A.J., Musa, D.P., Kanu, S.A., Quee, D.D., & Fomba, S.N., (2023). Farmers' perception on severity, crop loss and management practices of variegated grasshopper (Zonocerus variegatus L.) on cassava (Manihot esculenta Crantz) in Sierra Leone. Magna Scientia Advanced Research and Reviews, 2023, 09(01), 034–043. DOI: https://doi.org/10.30574/msarr.2023.9.1.0129

(43) Norman, P.E., Karim, K., Norman, S.G.E., & Vamboi, W.A. (2023). Estimation of genetic parameters for selected quantitative traits in introduced African Yam bean (Sphenosylis stenocarpa Hochst.ex. A. Rich Harms) genotypes. Journal of Tropical Crop Science, 10(3), 217–224.

(44) Saffa, M.D., Saquee, F.S., Norman, P.E., Kavhiza, N.J., Simbo, D., Zargar, M., Lyashko, M., Pakina, E., & Vvedenskey, V. (2023). Influence of field and storage diseases and pests on tuber yield and quality of exotic and local yam (Dioscorea spp.) genotypes. Horticulturae, 2023, 9, 1183. https://doi.org/10.3390/ horticulturae9111183

(45) Norman, P. E., Asfaw, A., Agre, P. A., Danquah, A., Tongoona, P. B., Danquah, E. Y., & Asiedu, R. (2023). Molecular and phenotypic profiling of white Guinea yam (Dioscorea rotundata) breeding lines. Frontiers in Horticulture, 2:1290521. doi: 10.3389/fhort.2023.1290521.

(46) Samura, A.E., Beamah, J., Amara, V., & Norman, P.E. (2024). Efficacy of various diseases management options and evaluation of farmers fields for major diseases of rice in Sierra Leone. Annals of Plant Sciences, 13(3), DOI:http://dx.doi.org/10.21746/aps.2024.13.3.3

(47) Norman, P.E., Kamara, L., Beah, A., Gborie, K.S., Saquee, F.S., Kanu, S.A., Kassoh, F.A., Norman, Y.S.G.E., & Kargbo, A.S. (2024) Genetic and Agronomic Parameter Estimates of Growth, Yield and Related Traits of Maize (Zea mays L.) Under Different Rates of Nitrogen Fertilization. American Journal of Plant Sciences, 15, 274-291. https://doi.org/10.4236/ajps.2024.154020

(b) Book chapter publications

(1) Norman, P.E., Bebeley, J.F., Sesay, J.V., & Norman, Y.S. (2019). Biodiversity in Sierra Leone. In: Global biodiversityVol. 3: Selected Countries in Africa T. Pullaiah (ed.). Apple Academic Press, p. 213–244.https://www.appleacademicpress.com/global-biodiversity-volume-3-selected-countries-in-africa/9781771887229

(2) Norman, P.E., Johnny, J., Moiforay, S.K., & Norman, Y.S.G.E. (2021). Invasive Alien Species of Sierra Leone.In: Invasive Alien Species.Observations and issues from around the worldVol. 1: Issues and Invasions in Africa, T. Pullaiah and Michael R. Ielmini (eds.). John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA, p. 242–262.DOI:10.1002/9781119607045.ch8

(3) Norman, P.E., Karim, K.Y., & Dzidzienyo, D. (2021). Assessing mating designs utilized in cassava population improvement (Chapter 5). In: Cassava, Biology, Production, and Use. Andri Frediansyah (ed.). IntechOpen Ltd. Janeza Trdine 9, 51000 Rijeka, Croatia. pp.91–111. http://dx.doi.org/10.5772/intechopen.96785.

(4) Norman, P.E., Dzidzienyo, D., Karim, K.Y., & Beah, A. (2021). Genetic Modification and Application in Cassava, Sweetpotato and Yams. In: Genetically Modified Plants and Beyond.  Idah Sithole-Niang (ed.). 24p. DOI:http://dx.doi.org/10.5772/intechopen.101037. IntechOpen Ltd. Janeza Trdine 9, 51000 Rijeka, Croatia.

(5) Norman, P.E., Okoni-Williams, A., James M.S., Norman, Y.S.G.E.,&Luseni, M.M. (2023).The Role of Botanical Gardens in Plant Diversity Conservation of Sierra Leone (Chapter 8), pp. 129-139. In: Botanical Gardens and their Role in Plant Conservation Volume 1 General Topics, African and Australian Botanical Gardens. T. Pullaiah and David A. Galbraith (eds.).CRC Press, Routledge, Taylor and Francis Group, USA, 272 pp. https://www.nhbs.com/botanical-gardens-and-their-role-in-plant-conservation-volume-1-book