Email: orokafrank@delsu.edu.ng

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  • Area of Specialization: Farming Systems/Plant Physiology
  • Department of Agronomy, Wildlife & Forestry

  • Dr. F.O. Oroka is an academic with keen interest in research related to organic farming. His hobbies include watching action movies and other in door sporting activities. He is a good goal achiever and team player. Combines flexibility with firmness
    My Publications
  1. OROKA, F.O. & UREIGHO, N.U. (2019) Effect of organic manures on the early seedling morphology of Irvingia wombolu Vermoesen in the tropical rainforest of Nigeria, Ceylon Journal of Science/Faculty of Science, University of Peradeniya
    https://cjs.sljol.info/articles/abstract/10.4038/cjs.v48i2.7620/ Vol.48(2) Pages: 163-168

  2. OROKA, F.O (2017) Mineral fertilizer and inter-row spacing effects on vegetative growth, nodulation and dry matter yield of cowpea (Vigna unguiculata Walp), International Journal of Agriculture & Rural Development/School of Agriculture & Agricultural Technology, Federal University of Technology, Owerri
    http://www.ijard.com/journalarticles/Vol%2020(2)%202017/7.pdf Vol.20(2) Pages: 3066-3073

  3. OROKA, F.O (2017) Effect of mulching and spacing on soil moisture, soil temperature and growth of eggplant (Solanum melongena L.), Nigerian Journal of Scientific Research /Faculty of Science, Ahmadu Bello University, Zaria
    Vol.16(3) Pages: 335-341

  4. OROKA, F.O & BOSAH, B.O. (2017) Vegetative growth, dry matter production and seed Yield of soybean (Glycine max L. Merrill) in response to Poultry Manure and Phosphorus Fertilization , Nigerian Journal of Scientific Research/Faculty of Science, Ahmadu Bello University, Zaria
    Vol.16(4) Pages: 495-500

  5. OROKA, F.O (2017) Influence of poultry manure and irrigation frequency on growth and yield of grain amaranth (Amaranthus cruentus L.) , International Journal of Agriculture & Rural Development/School of Agriculture & Agricultural Technology, Federal University of Technology, Owerri
    http://www.ijard.com/journalarticles/Vol%2020(2)%202017/8.pdf Vol.20(2) Pages: 3074-3082

  6. OMOVBUDE, S., OROKA, F.O. & UDENSI, E. U. (2017) Effect of Different Weed Control Practices On Proximate Composition, Nutrient Concentration and Uptake of Maize (Zea Mays L.), IOSR Journal of Agriculture and Veterinary Science/ Published by International Organization of Scientific Research. India
    https://www.iosrjournals.org/iosr-javs/papers/Vol10-issue2/Version-1/R10020198104.pdf Vol.10(2) Pages: 98-104

  7. OROKA, F.O (2016) Biological efficiency of okra-Celosia intercrop as influenced by inter-row spacing Nigeria , Journal of Agriculture and Food Environment/ Faculty of Agriculture, Delta State University, Abraka
    https://www.jafedelsu.com/archive/fulltext/2016no1/JAFE%20Vol%203%20No%201,%2052-60.pdf Vol.2(1) Pages: 88-94

  8. OROKA, F.O (2016) Soil Microclimate and Crop Yield of Zea mays (L.) As Affected by Mulching and Nitrogen Application Nigeria , Journal of Agriculture and Food Environment/ Faculty of Agriculture, Delta State University, Abraka
    https://www.jafedelsu.com/archive/fulltext/2016no1/JAFE%20Vol%203%20No%201,%2045-51.pdf Vol.3(1) Pages: 45-51

  9. OROKA, F.O. & ENUJEKE, E.C. (2016) Response of Maize + Egusi melon to Intercropping and Weeding Frequency in a Rainforest Zone of Nigeria Nigeria , Journal of Agriculture and Food Environment / Faculty of Agriculture, Delta State University, Abraka
    https://www.jafedelsu.com/archive/fulltext/2016no1/JAFE%20Vol%203%20No%201,%2052-60.pdf Vol.3(1) Pages: 52-60

  10. OROKA, F.O (2016) Mulching Effects and Nitrogen Application on the Performance of Zea mays L: Crop Growth and Nutrient Accumulation, International Letters of Natural Sciences./ Scipress, Switzerland
    https://www.scipress.com/ILNS.51.36 Vol.51 Pages: 36-42

  11. OROKA, F.O (2016) Method Of Application On Crop Growth And Yield In Okra-Amaranth Cropping Sequence Influence Of Organic And Inorganic Nutrients, International Research Journal of Natural and Applied Sciences/Associated Asia Research Foundation, India
    http://aarf.asia/applied2.php?p=Volume3,Issue5,May2016 Vol.3(5) Pages: 188-198

  12. OROKA, F.O & EMUH F. N. (2016) Agro-Economic Returns from Rice + Cowpea Intercropping Under Varying Nitrogen Rates, Journal of Biology, Agriculture and Healthcare/ International Institute of Science, Technology & Education, USA
    https://www.iiste.org/Journals/index.php/JBAH/article/view/28391 Vol.6(2) Pages: 129-134

  13. OROKA, F.O (2016) Morphological and Yield Attributes of Okra (Abelmoschus esculentus L. Moench) as Influenced by Vermicompost + NPK Nutrient Sources , Advances in Life Science and Technology 40: 46-50 Published by International Institute of Science, Technology & Education, USA
    https://www.semanticscholar.org/paper/Morphological-and-Yield-Attributes-of-Okra-L.-as-by-Moench/acd7795c0b8753116df25fa9948c882ca7217a30 Vol.6(2) Pages: 46-50

  14. OROKA, F.O (2016) Effects of Agro-Climatic Variables on Yield of Zea mays L. in a Humid Tropical Rainforest Agroecosystem, Journal of Environment and Earth Science/International Institute of Science, Technology & Education, USA
    https://www.semanticscholar.org/paper/Effects-of-Agro-Climatic-Variables-on-Yield-of-Zea-Oke/85b8dda4265ccb2794e4fd330b0acae89c611c4c Vol.6(1) Pages: 148-151

  15. OROKA, F.O (2016) Cassava-Groundnut Intercropping Under Mineral Fertilizer and Vermicomposts: Effect On Below Ground Microclimate, Nitrogen Mineralization and Cassava Foliage, Journal of Natural Sciences Research/ International Institute of Science, Technology & Education, USA
    https://www.iiste.org/Journals/index.php/JNSR/article/view/28294/29037 Vol.6(2) Pages: 86-93

  16. OROKA, F.O. & OMOVBUDE, S. (2016) Effect of mulching and period of weed interference on the growth, flowering yield parameters of okra (Abelmoschus esculentus L.) , IOSR Journal of Agriculture and Veterinary Science/International Organization of Scientific Research. India
    https://pdfs.semanticscholar.org/4222/c79a18f7756e5fc7a738de5d98e4420b624a.pdf Vol.9(5) Pages: 52-56

  17. OROKA, F.O (2015) Influence of nitrogen supply on the area, mass and relative growth rate of maize leaf , Austrian Journal of Technical and Natural Sciences /East-West Association for Advance Studies & Higher Education, Vienna, Austria
    https://cyberleninka.ru/article/n/influence-of-nitrogen-supply-on-the-area-mass-and-relative-growth-rate-of-maize-leaf Vol.11-12 Pages: 27-30

  18. OROKA, F.O. & AKHIHIERO, T. (2015) Anerobic co-digestion of water hyacinth and cow dung for biogas production , Austrian Journal of Technical and Natural Sciences/ East-West Association for Advance Studies & Higher Education, Vienna, Austria
    https://cyberleninka.ru/article/n/anaerobic-co-digestion-of-water-hyacinth-and-cow-dung-for-biogas-production Vol.11-12 Pages: 41-44

  19. OROKA, F.O. & UREIGHO, N.U. (2015) Ethnobotanical Assessment of Indigenous Wild and Semi-Wild Fruits For Medicine and Food in Delta State Nigeria, European Science Review/ East-West Association for Advance Studies & Higher Education, Vienna, Austria
    https://cyberleninka.ru/article/n/ethnobotanical-assessment-of-indigenous-wild-and-semi-wild-fruits-for-medicine-and-food-in-delta-state-nigeria Vol.11-12 Pages: 3-5

  20. OROKA, F.O (2015) Influence of Municipal Solid Waste on Soil Organic Carbon Stock And Yield Of Abelmoschus esculentus Moench In A Tropical Agroecosystem , Journal of Environment and Earth Science/ International Institute of Science, Technology & Education, USA
    https://www.iiste.org/Journals/index.php/JEES/article/view/23303 Vol.5(12) Pages: 61-66

  21. OROKA, F.O (2015) Crop Response to Mineral Fertilizer, Vermicompost and Density in Cassava + Groundnut Intercrop, Advances in Life Sciences and Technology/ International Institute of Science, Technology & Education, USA
    http://eprints.icrisat.ac.in/13824/ Vol.33 Pages: 61-66

  22. OROKA, F.O (2015) Vegetative Growth, Nutrient Uptake and Yield of Pumpkin under Liquid Organic Manures in a Tropical Agroecosystem, IOSR Journal of Agriculture and Veterinary Science/ Published by International Organization of Scientific Research. India
    http://www.iosrjournals.org/iosr-javs/papers/vol8-issue12/Version-2/A081220104.pdf Vol.8(12) Pages: 1-4

  23. OROKA, F.O (2015) Leaf Area Development and Vine Growth of Telfairia occidentalis (Hook. F) In Response to Plant Spacing and Liquid Cattle Manure Agroecosystem , IOSR Journal of Agriculture and Veterinary Science/ Published by International Organization of Scientific Research. India
    https://pdfs.semanticscholar.org/6bbc/fb570e1509657dbdb29de91f08876e391ae2.pdf Vol.8(12) Pages: 5-10

  24. OROKA, F.O. & OMOREGIE, A.U. (2015) Nutritional Composition of Residues Available for Ruminants from Rice + Cowpea Intercrop During the Dry Season in Nigeria , Journal of Biology, Agriculture and Healthcare / International Institute of Science, Technology & Education, USA
    https://www.iiste.org/Journals/index.php/JBAH/article/view/22005 Vol.5(8) Pages: 105-112

  25. OROKA, F.O (2015) Macro- and Micronutrient Uptake in Rice + Cowpea Production System as Influenced by Mineral Nitrogen and Crop Population, Journal of Natural Sciences Research/ Published by International Institute of Science, Technology & Education, USA
    https://www.iiste.org/Journals/index.php/JNSR/article/view/21929 Vol.5(8) Pages: 34-40

  26. ENUJEKE, E.C., EGBUCHUA, C. N. & OROKA, F.O. (2015) Growth and yield of Amaranthus (Amaranthus cruentus L.) as affected by graded levels of urea fertilizer in Ferralitic ultisols of Delta State Nigeria , Journal of Agriculture and Food Environment/ Faculty of Agriculture, Delta State University, Abraka
    Vol.2(1) Pages: 88-94

  27. OROKA, F.O (2013) Influence of Water hyacinth - based Vermicompost and Cassava –groundnut Intercropping on some Physical Properties of a Tropical Soil, Journal of Natural Sciences/ Published by International Institute of Science, Technology & Education, New York , USA
    https://pdfs.semanticscholar.org/4c6a/ddcfac5b71ce25a4a560e0358c15edaa0463.pdf Vol.3(7) Pages: 155-162

  28. OROKA, F.O & AKHIHIERO, T.E. (2013) (2013) Fuel Briquettes from Water Hyacinth-Cow Dung Mixture as Alternative Energy for Domestic and Agro-Industrial Applications , Journal of Energy Technologies and Policy/ International Institute of Science, Technology & Education, New York , USA
    https://www.iiste.org/Journals/index.php/JETP/article/view/6467 Vol.3(6) Pages: 56-61

  29. OROKA, F.O (2012) Density and Nitrogen Effects on Forage Dry Matter Yield and Productivity Indices of Crop Residues in Rice-Cowpea Intercropping, Journal of Biology, Agriculture and Healthcare / International Institute of Science, Technology & Education, USA
    https://pdfs.semanticscholar.org/4c6a/ddcfac5b71ce25a4a560e0358c15edaa0463.pdf Vol.7(8) Pages: 92-96

  30. OROKA, F.O (2012) Water hyacinth-based vermicompost on yield, yield components, and yield advantage of cassava-groundnut intercropping system Journal of Tropical Agriculture 50 (1-2): 49-52 Published by Kerala Agricultural University, India, Journal of Tropical Agriculture / Kerala Agricultural University, India
    https://jtropag.kau.in/index.php/ojs2/article/viewFile/266/266 Vol.50(1-2) Pages: 49-52

  31. OROKA, F.O (2012) Comparative Effects of Municipal Solid Waste Compost and NPK Fertilizer on the Growth and Marketable Yield of Celosia argentea L., New York Science Journal 5(10): 34-38 Published by Marsland Press, New York, USA
    https://worldveg.tind.io/record/47757/ Vol.5(10) Pages: 34-38

  32. OROKA, F.O (2011) Impact of ICT on rural crop farmer’s access to production technologies and market , DELSU Journal of Educational Research & Development /Published by Faculty of Education, Delta State University, Abraka
    Vol.11(1) Pages: 15-20

  33. OROKA, F.O (2009) Economics of urban horticulture in Southern Nigeria: Case of Delta State, Proceedings of the 23rd Annual National Conference of the Farm Management Association of Nigeria (FAMAN)/ Farm Management Association of Nigeria
    Vol.39 Pages: 291-298

  34. OROKA, F.O. & OMOREGIE, A.U. (2007) Competition in a rice-cowpea intercrop as affected by nitrogen fertilizer and plant population., Scientia Agricola/Faculty of Agriculture, University of Sao Paulo, Brazil
    http://www.scielo.br/scielo.php?pid=S0103-90162007000600010&script=sci_arttext Vol.64 (6) Pages: 621-629

  35. OROKA, F.O (2005) Sustainable indigenous knowledge systems in crop farming in Nigeria, National Agricultural Society of Sri Lanka, Sri Lanka
      Vol.42 Pages: 12-19

  36. OROKA, F.O; OKHIRIA, J.I & ONORIODE, A (2005) Effect of weed interference on the vegetative growth and marketable yield of Celosia argentea , Proceedings of 39th Annual Conference of the Agricultural Society of Nigeria/ Agricultural Society of Nigeria
    Vol.39 Pages: 107-110

  37. OROKA, F.O (2003) Intercropping as a sustainable farming system in Nigeria, National Agricultural Society of Sri Lanka, Sri Lanka
      Vol.40 Pages: 50-56