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Evaluation of the Performance of Different Organic Fertilizers on Maize Yield: A Case Study of Kampala, Uganda

Author

Listed:
  • Allan Komakech
  • Christian Zurbrügg
  • Denis Semakula
  • Nicholas Kiggundu
  • Björn VinnerÃ¥s

Abstract

In Kampala city about 60% of animal manure generated is discarded leading to health and environmental challenges. However about 30% of this manure is used as fertilizer mainly in the form of stored animal manure. The manure could also be vermicomposted or anaerobically digestated and used in crop production. However, it has not yet been clearly established which of these options would be most beneficial in producing better crop yields when applied to soils in Kampala. This study evaluated the performance of different organic fertilizers namely vermicompost, digestate and stored cattle manure and unfertilized control on growth and yield of maize (Zea mays spp). The experiment was carried out at Makerere University Agricultural Research Institute Kabanyolo for two seasons (October 2013 to February 2014 and March to June 2014). No significant difference (P > 0.05) in the different organic fertilizers was noted in both the growth and yield of maize in each season. However a significant difference (P < 0.05) in both crop growth and yield was noted when the organic fertilizers were compared with the control. In addition when the different seasons were compared, the growth and yield of maize in season two was generally found to be better (P > 0.05) than that of season one. The interviews conducted with farmer groups showed they generally preferred using stored manure and vermicompost. It can thus be concluded that these fertilizers are best for Kampala thus should be promoted by the municipal authorities to address the rampant poor disposal of animal manure in Kampala.

Suggested Citation

  • Allan Komakech & Christian Zurbrügg & Denis Semakula & Nicholas Kiggundu & Björn VinnerÃ¥s, 2015. "Evaluation of the Performance of Different Organic Fertilizers on Maize Yield: A Case Study of Kampala, Uganda," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 7(11), pages 1-28, October.
    • Handle: RePEc:ibn:jasjnl:v:7:y:2015:i:11:p:28
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    References listed on IDEAS

    as
    1. Zezza, Alberto & Tasciotti, Luca, 2010. "Urban agriculture, poverty, and food security: Empirical evidence from a sample of developing countries," Food Policy, Elsevier, vol. 35(4), pages 265-273, August.
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    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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