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Prof. Sylvia Bassey Akpassam

Crop Science


Umoetok, S.B.A. (1994). The effect of spacing on the population of insect pests of soybean in a humid Calabar Area. Trop. Journ. For Applied Sciences, 3 and 4:28-35.

Umoetok, S.B.A and E.A. Salako (1995). Effect of time of commencement and interval of spraying Calixin-M on the control of Cercospora leaf spots and rust on groundnut. J. Appl. Chem. and Agric Rec, 2:15-20.

Umoetok, S.B.A. (1996). A comparative efficacy of Mancozeb applied as medium volume and ultra-low volume sprays for the control of groundnut leaf spots and rust in Samaru, Northern Nigeria. Tropical Journal of Applied Sciences, Vol.6:32-39.

Umoetok, S.B.A. and E.J. Usua (1997). A compendium of insects and natural enemies associated with soybean (Glycine max (L.) Merril) in Calabar, a humid area. Journal of Applied Chem. and Agric. Res, 4:33-40

Umoetok, S.B.A. and M.G. Solomon (1997). Effect of different Potassium levels on insects pests associated with soybean (Glycine max (L.) Merril) in Calabar. Classical Journal of Research Education (CRJE), 2(1):82-86.

Umoetok, S.B.A., S.O. Emosairue and I.S. Nsekpong (1999). The use of sand as a protectant against Cowpea Bruchid (Callosobruchus maculates F ) on stored cowpea (Vigna unguiculata L ) seeds. Nigerian Journal Agric.Tech, 8:1-5.

Umoetok, S.B.A. and F.B. Okokon (1999). Evaluation of the powder of Dennetia tripetala seeds and Pirimiphos-methyl for the control of Callosobruchus maculatus F. on the stored cowpea (Vigna unguiculata L) seeds. Global Journal of Pure and Applied Sciences, 5(4):437-439.

Umoetok, S.B.A. (2000). The use of trap crops in the control of insect pests on soybean (Glycine max (L.) Merril) in Calabar, a humid environment. Nigerian South-East Journal of Agricultural Economics and Extension, 2 and 3:145-148.

Umoetok, S.B.A. (2000). Toxicity of Sweet Flag (Acorus calamus) to three major insects pests of stored products. Global Journal of Pure and Applied Sci, 6(2):187-189.

Obiokhenam, A.A.; E.J. Usua and Umoetok, S.B.A. (2002). Distribution of Lepidopterous stem borers of maize (Zea mais L.) in the ecological zones Of Cross River State of Nigeria. Global Journ. of Agric. Sciences, 1(2):89-92.

Umoetok, S.B.A. (2000). The toxicity of three insecticides on Tribolium Castaneum (Herbs) (Coleoptera Tenebrionidae). Trans Nig. Soc. Bio. Conservation, 7:1-5.

Umoetok, S.B.A.; Uko, A.E. and Afangide, U. (2002). Evaluation of the performance of some vegetable cowpea cultivars (Vigna unguiculata L.) Walp in Calabar. Nigerian South East Journal of Agric. Economics and Extension, 4(1 and 2): 73-80.

Ukeh, D.A.; E.J. Usua and S.B.A. Umoetok (2003). Notes on the biology of Orycetes monocerus (Oliv.), a pest of palms in Nigeria. Global Journal of Agricultural Sciences, 2(1):33-36.

Umoetok, S.B.A. and Gerard, M. (2003). Comparative efficacy of Acorus calamus and two synthetic insecticides in the control of three major insect pests of stored cereals products. Global Journal of Agricultural Sciences, 2(2):94-97.

Ogar, D.A. and Umoetok, S.B.A. (2003). Participation of women in the conservation of non-timber forest products in selected Local Government Areas of Cross River State. Journ. of Tropical Forest Research, 19(2):171-176.

Umoetok, S.B.A. and E.J. Usua (2003). Effect of weeding on the population of insect pests and yields of soybean in Calabar, a humid tropical environment. Nigerian Journal of Entomology, 20:82-88.

Umoetok, S.B.A. and D.A. Ukeh (2004). Comparison of Aframomum melequeta and Piper niger crude oil extract in the control of Callosobruchus maculatus (F) and Sitophilus zeamais (Motsc) on storage products in Calabar. Nigerian Journal of Applied Sciences, 1(1): 3885-3892.

Emosairue, S.O., G.E. Nwofia and S.B.A. Umoetok (2004). Observation on the insect complex associated with cowpea (Vigna unguiculata) Walp in Umudike, Southeastern Nigeria. Journal of Sustainable Agriculture and Environment, 6(1): 38-43.

Okokon, F.B.; Sylvia B.A. Umoeto; Ajiboye S. Oyerinde and Ekpenyong E.(2004). An empirical model for estimating weight loss of stored cowpea seeds. Journal of Food Agriculture and Environment, 2(1):303-306.

Umoetok, S.B.A.; Oku, E. and Ukeh, D.A. (2004). Reduction of damage caused to stored cowpea (Vigna unguiculata L.) seeds by the Bean Bruchids (Callosobruchus maculatus F.) using plant products. Journal of Food Technology, 2(4): 194-196.

Umoetok, S.B.A. (2004). The control of damage caused by maize weevils (Sitophilus zeamais Motsc) to stored maize (Zea mais L.) grains using Cardamon (Aframomum melegueta Thorn (K) Schum and Black pepper (Piper gineensis Schum and Thorn). Journal of Food, Agriculture and Environment, 2(2): 250-252.

Keita S.; Umoetok S.B.A. and Smith J.G. (2006). The insecticidal activity of Petroleum ether extract of Hyptis suveolens Poit( Labiatae) seeds on Plutella xylostella (Lepidoptera: Yponomeutidae). Agricultural Journa,l 1(10):11-13.

Iloba, B.N. and Umoetok, S.B.A. (2007). Effects of Dinarmus basalis (Rendani) on the population density of Callosobruchus maculatus (Fabricius on stored cowpea (Vigna unguiculata Walsp) seeds. Tropical and Agroecosystems, 7:59-62.

Iloba, B.N.; Umoetok, S.B.A. and Keita S. (2007). The biological control of Callosobruchus maculatus (Fabricius) by Dinamus basalis (Rendani) on stored cowpea (Vigna unguiculata (L.) Walsp) seeds. Research Journal of Applied Sciences, 2(4):397-399.

Iloba, B.N.; Umoetok, S.B.A. (2007). Development of Callosobruchus maculatus (Fabricius) on grain legumes used as cover crops. Agricultural Journal, 2(1):97-100.

Ukeh, D. A.; Umoetok S.B.A.; Pascal Iwejuo and Emosairue, S.O. (2007). Effects of Plantain inflorescence ash and neem seed extracts on the yield and insect pests of eggplant (Solanum melongena L.) in Calabar, Nigeria. Research Journal of Agronomy, 1(2):88-93.

Umoetok, S.B.A.; Uko, A.E.; Archibong, B.E.; Ukeh, D.A. and Udo, I.A. (2007). Effect of application of inorganic fertilizer and poultry manure on insect pests and yield of soybean (Glycine max L.) in the rain forest zone of Nigeria. Journal of Food, Agriculture and Environment, 5(2): 149-152.

Ukeh, D. A. and Umoetok, S.B.A. (2007). Effects of host and nonhost plant volatiles on the behaviour of the Lesser Grain Borer (Rhyzopertha dominica (Fab.). Journal of Entomology, 4(6): 435-443.

Solomon, M.G., Okon, P.B. and Umoetok, S.B.A. (2008). Effects of neem extracts on soil properties, microbial populations and leaf area of fluted pumpkin (Telfairia occidentalis). Research Journal of Agronomy, 2(1):12 -17

Umoetok, S.B.A.; Osuagwu, A.N.; Udo, I. A.; Idiongette, M. I. and Ukeh, D.A. (2009). Effects of Azadiracta indica products on the management of Ootheca mutabilis on Telfairia occidentalis in Calabar, Southeast, Nigeria.Crop Protection, 28:

Ekanem, M. S. and Umoetok, S.B.A. (2009). The immature stages of three carrion breeding blowflies (Diptera: Calliphoridae) in South eastern Nigeria. The Zoologist, 7:152-161.

Ukeh, D.A.; Umoetok, S.B.A.; Udo, I.A. and Khalid Abdullah (2010). Behavioural and olfactory responses of Sitophilus zeamais (Coleoptera; Curculionidae) to Aframomum melegueta Thorn (K) Schum and Zingiber officinale Oleoresins. Global Journal of Pure and Applied Sciences, 16(1): 1-8.

Umoetok, S.B.A., Edem, E. and Abam, A. (2010). Cultural agricultural education: Panacea for sustainable agriculture. Annals of Education 2(1): 193- 197.

Donald A. Ukeh, Sylvia B.A. Umoetok (2011). Repellent effects of five monoterpenoid odours against Tribolium castaneum (Herbst) and Rhyzopertha dominica (F.) in Calabar, Nigeria. Crop Protection 30(2011) 1351-1355.

Umoetok, S.B.A, Bello, Solomon, M.G. and Ediene V. (2012).The microbial components and activities of soils at a dump site in Calabar, CRS, Nigeria. Nigerian. Journal of Soil Science, 21(1): 41-47.

Isah, M.D., Ayetey, J.N. Ukeh, D.A. and Umoetok, S.B.A. (2012). Damage and Weight Loss to Dried Chips of Cassava, Cocoyam, Yam and Plantain Exposed to Prostephanus truncatus (Horn) (Coleoptera:Bostrichidae) over three different time durations. Journals of Entomology 9(3):137-145.

Donald Ukeh, Sylvia B, A. Umoetok, Alan S. Bowman, A. Jennifer Mordue Luntz), John A. Pikett, Michael A. Birkett (2012). Alligator pepper, Aframomum melugueta, and ginger, Zingiber officinale, reduce stored maize infestation by the maize weevil, Sitophilus zeamais in traditional African granaries. Crop Protection 32:99-103.

Udo F.J, S.B.A. Umoetok, G.N. Udom and I. B. Nsien (2012). Effects of cultivar and Types and Rates of Plant Insecticides on Yield and Pest Damage to Eggplants. Journal of Agriculture, Biotechnology and Ecology, 5(2), 46-54.

Okweche, Simon Idoko and Umoetok Sylvia B. A. (2012). The distribution of maize borers in Cross River State, Nigeria. International Journal of Plant, Animal and Environmental Sciences, 2(1) : 82-86.

Umoetok, S.B.A., Ukeh, D.A, Udo I.A., Ekanem M. and Iloba, B.N. (2013). Competition in the Parasitization of Callosobruchus maculatus between Dinarmus basalis and Choetospila elegans on Vigna unguiculata (Walp.) seeds. Sustainable Agriculture Research, 2(1): 92-97.

Okweche, Simon Idoko, Umoetok, Sylvia Bassey A.; Osai Ephraim O. (2013). Effects of Synthetic (Carbofuran) and Non- synthetic Insecticides on Maize Growth and Yields in Stem-borer Infested Zone of Cross River State, Nigeria. Journal of Biology, Agriculture and Healthcare, 3(1): 58-67.

Essien, Rosemary Anietie, Odebiyi, Johnson Adebayo, Ekanem, Mfon Sunday, Umoetok, Sylvia Bassey Akpassam (2013). Functional response of Exochomus flavipes Thunberg (Coleoptera: Coccinellidae), a local predator of the cassava mealybug Phenacoccus manihoti Matile Ferrore (Homoptera: Pseudococcidae) International Journal of Agricultural Economics and Extension, 1 (6): 042-046.

Utietiang L. Undie, Donatus F. Uwah, Sylvia B.A Umoetok, Emmanuel E. Attoe and Emmanuel B. Effa (2013). Response of Late Season maize/ Soybean Intercropping to Nitrogen in the Humid Environment of South Southern Nigeria. Journal of Biology, Agriculture and Haelthcare, 3(10): 84-91.

Sylvia B. A. Umoetok, Musa D. Isah, Joseph A. Ukeh and Idorenyin A. Udo (2013). Evaluation of the Insecticidal and Deterrence Properties of Pepper Fruit, Dennettia tripetala (G. Baker) and Ginger Zingiber officinale Roscoe against Maize Weevil Sitophilus zeamais (Motsch). Journal of Biology, Agriculture and Healthcare, 3(6): 76 - 82

Eka A. Uwe, Janet Petters, Akon Esu, Sylvia Umoetok, Paulina Edet and Eno Ntukidem (2013). Akwa Ibom State Women: Contributions to Education (P 21- 44). In Nigeria’s Centenary: Akwa Ibom State Imprint in National Development Centre for Gender Studies, University of Uyo, 2014, Uyo Pp 398.

Simon I. Okweche, Ephraim O. Osai and Sylvia Bassey A. Umoetok (2015). Maize borer damage in Nigeria’s Guinea Savanna: timing of planting overrides effects of insecticides treaments. Revista Colombiana de Entomologia, 41 (2): 170 – 175.

Simon Idoko Okweche, Sylvia Bassey Umoetok and Ukatu Patrick Odey (2016). Comparative efficacy of insecticidal plants on the management of groundnut bruchid (Caryedon serratus Olivier) Journal of Agricultural Studies, 4 (3): 47 – 57.

Sylvia Umoetok, Kasonde Bowa and Labbbiib M. A. (eds) 2016). The importance of cassava in Sub- Saharan Africa: case Studies in Nigeria, Uganda and Zambia. Support Africa International- Studies in sub-Saharan Africa Vol.7, 130pp.

Sylvia Bassey Umoetok Akpassam, Beatrice Ngozi Iloba and Idoenyin Asukwo Udo (2017). Response of Callosobruchus maculatus (F.) to varying temperature and relative humidity under laboratory conditions. Archives of Phytopathology and Plant Protection 50(1-2): 13-23.

Ediene V. F. Umoetok S.B.A. (2017). Concentration of heavy Metals at the Municipal Dumpsite in Calabar Metropolis. Asian Journal of Environment and Ecology, 3(2): 1-11.

No Results for Research Works done
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