Research Article

Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR)

Volume: 9 Number: 2 December 31, 2025
  • Anthonia Osayanmon Bakare *
  • Ikpotokin Osadebamwen Osemwota
  • Isaiah Ufuoma Efenudu

Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR)

Abstract

This study The investigation of the effect of varying N:K ratios on the yield, yield components, and shelf life of white yam (Dioscorea rotundata Poir) was carried out at Ambrose Alli University's Teaching and Research Farm. The experiment was fitted on a used a Randomized Complete Block Design with three replications and 13 thirteen N:K ratios. (list the ratio). Results showed that N:K ratios with high nitrogen rates favored higher yam growth parameters, such as leaf area, vine length, and vine girth. The N:K ratio of 1:2 produced the highest number of yam tubers per stand. The optimal N:K ratios for white yam growth and yield were found to be around 4:1, 5:1, 6:1 and 1:2, respectively.The findings of this study have important implications for white yam production, as improving its yield and quality can increase food security and income for smallholder farmers. In conclusion, using optimal N:K ratios can improve the growth and yield of white yam, enhance livelihoods, and reduce the environmental impact of fertilizer use.This study It was therefore recommended that the use of N:K ratios of 1:2 and 4:1, 5:1, 6:1 improved the growth and yield of white yam growth and yield respectively. These findings can contribute to the development of sustainable white yam production systems, enhancing food security and livelihoods for smallholder farmers in tropical countries.

Keywords

References

  1. Adeyemo A., Okeleye K.A. & Oyedele D.J. 2017. Effects of nitrogen and potassium fertilizers on the growth and yield of white yam (Dioscorea rotundata). Journal of Agricultural Science, 9(3), 1-9.
  2. Aiyelari E.A., Adeyemo A. & Okeleye K.A. 2015. Effects of nitrogen and potassium fertilizers on the growth and yield of white yam (Dioscorea rotundata). Journal of Sustainable Agriculture, 39(2), 147-158.
  3. Alexander M. 1977. Introduction to Soil Microbiology, 2nd edn, John Wiley and Sons, New York, pp. 423-437.
  4. Anderson J.M. & Ingram J.S.I. 1993. Tropical Soil Biology and Fertility: A Handbook of Methods, 2nd edn, CAB International, Wallingford, UK.
  5. Asadu C.L.A., Egbobe O.B. & Asiedu R. 2008. Storage life of eleven cultivars of white yam (Dioscorea rotundata) grown with or without NPK fertilizer and the relationship with residual soil NPK. Agro-Science Journal of Tropical Agriculture, Food, Environment and Extension, 7(3), 235-241.
  6. Ayoola O.T. 2006. Effects of fertilizer treatments on soil chemical properties and crop yield in a cassava-based cropping system. Journal of Applied Sciences Research, 2, 1112-1116.
  7. Bakare A.O. & Osemwota I.O. 2015. Effects of variation of N:K ratios in soils on the growth, nutrient availability and yield of maize (Zea mays). Nigerian Journal of Soil Science, 25, 116-124.
  8. Brady N.C. & Weil R.R. 2005. The Nature and Properties of Soils, 13th edn, Pearson Education, New York.

Details

Primary Language

English

Subjects

Soil Sciences and Ecology

Journal Section

Research Article

Authors

Anthonia Osayanmon Bakare * This is me
Nigeria

Ikpotokin Osadebamwen Osemwota This is me
Nigeria

Isaiah Ufuoma Efenudu This is me
Nigeria

Publication Date

December 31, 2025

Submission Date

January 22, 2025

Acceptance Date

December 11, 2025

Published in Issue

Year 2025 Volume: 9 Number: 2

APA
Bakare, A. O., Osemwota, I. O., & Efenudu, I. U. (2025). Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR). Eurasian Journal of Agricultural Research, 9(2), 168-178. https://izlik.org/JA72NJ89KS
AMA
1.Bakare AO, Osemwota IO, Efenudu IU. Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR). EJAR. 2025;9(2):168-178. https://izlik.org/JA72NJ89KS
Chicago
Bakare, Anthonia Osayanmon, Ikpotokin Osadebamwen Osemwota, and Isaiah Ufuoma Efenudu. 2025. “Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea Rotundata POIR)”. Eurasian Journal of Agricultural Research 9 (2): 168-78. https://izlik.org/JA72NJ89KS.
EndNote
Bakare AO, Osemwota IO, Efenudu IU (December 1, 2025) Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR). Eurasian Journal of Agricultural Research 9 2 168–178.
IEEE
[1]A. O. Bakare, I. O. Osemwota, and I. U. Efenudu, “Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR)”, EJAR, vol. 9, no. 2, pp. 168–178, Dec. 2025, [Online]. Available: https://izlik.org/JA72NJ89KS
ISNAD
Bakare, Anthonia Osayanmon - Osemwota, Ikpotokin Osadebamwen - Efenudu, Isaiah Ufuoma. “Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea Rotundata POIR)”. Eurasian Journal of Agricultural Research 9/2 (December 1, 2025): 168-178. https://izlik.org/JA72NJ89KS.
JAMA
1.Bakare AO, Osemwota IO, Efenudu IU. Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR). EJAR. 2025;9:168–178.
MLA
Bakare, Anthonia Osayanmon, et al. “Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea Rotundata POIR)”. Eurasian Journal of Agricultural Research, vol. 9, no. 2, Dec. 2025, pp. 168-7, https://izlik.org/JA72NJ89KS.
Vancouver
1.Anthonia Osayanmon Bakare, Ikpotokin Osadebamwen Osemwota, Isaiah Ufuoma Efenudu. Variation in Nitrogen and Potassium Ratio in Soils on The Growth and Yield of White Yam (Dioscorea rotundata POIR). EJAR [Internet]. 2025 Dec. 1;9(2):168-7. Available from: https://izlik.org/JA72NJ89KS
Eurasian Journal of Agricultural Research (EJAR)   ISSN: 2636-8226   Web: https://dergipark.org.tr/en/pub/ejar   e-mail: agriculturalresearchjournal@gmail.com