African Journal of Plant Science
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Article Number - 80FFFF955973


Vol.12(3), pp. 65-72 , March 2018
https://doi.org/10.5897/AJPS2017.1583
ISSN: 1996-0824


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Full Length Research Paper

Upland rice response to fertilizer in three agro-ecological zones of Uganda



Kayuki C. Kaizzi
  • Kayuki C. Kaizzi
  • National Agricultural Research Laboratories, (NARL), P. O. Box 7065, Kawanda, Kampala, Uganda.
  • Google Scholar
Angella Nansamba
  • Angella Nansamba
  • National Agricultural Research Laboratories, (NARL), P. O. Box 7065, Kawanda, Kampala, Uganda.
  • Google Scholar
Ruth Kabanyoro
  • Ruth Kabanyoro
  • Mukono Zonal Agricultural Research and Development Institute (MuZARDI), P. O. Box 164, Mukono, Uganda.
  • Google Scholar
Jimmy Lammo
  • Jimmy Lammo
  • National Crops Resources Research Institute (NaCRRI), P. O. Box 7084, Kampala, Uganda.
  • Google Scholar
Harrison Rware
  • Harrison Rware
  • CAB International (CABI), P. O. Box 633-00621, Nairobi, Kenya.
  • Google Scholar







 Received: 09 July 2017  Accepted: 15 November 2017  Published: 31 March 2018

Copyright © 2018 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


The yield of upland rice (Oryza spp.) per unit area of production in Uganda is low, partly due to low soil fertility, and use of fertilizer and manure is also low. Trials to establish the response of upland rice to applied nutrients and economically optimal nutrient rates (EOR) were determined at Tororo, Kawanda and Kadesok. The increase in paddy yield was in the range of 91 to 173% with application of 50 to 120 kg N ha-1. Application of 10 kg P ha-1 and 20 kg K ha-1 resulted in a 10 to 46% additional increase, respectively. Nitrogen application was profitable for all cost of fertilizer to farm-gate price of produce (CP) ratios, with a three season mean economically optimum nutrient rate (EONR) ranging from 67 to 144 kg ha-1 and CP ratios varying from 2 to 12. Application of 10 kg P and 20 kg K ha-1 together with N reduced the mean EOR to a range of 47 to 97 kg ha-1 depending on the CP ratio. Application of Zn, S, B and Mg together with nitrogen, phosphorus and potassium fertilizer (NPK) increased paddy yield by 19% above the NPK yield of 3.7 t ha-1, indicating that either Mg, S, Zn and B or their combination limit rice production in Uganda. Trace elements were applied as a mixture. There is a need to establish which element limits rice production in addition to the economics of their use. This information is required for fertilizer blending in the region to produce blends of the right formulation. The cost of fertilizers increases with the nutrients applied, which has an implication for the appropriate quantity of fertilizers to be used. To reduce or stop soil degradation from nutrient mining requires interventions at policy level such as fertilizer subsidies, improved market for produce and input supply efficiency, and increased access to extension, information and credit by farmers.

Key words: Economic, fertilizer use, nitrogen, phosphorus, potassium, trace elements, secondary elements.

 

Bouyoucos GJ (1936). Directions for making mechanical analysis of soils by the hydrometer method. Soil Sci. 42:225-230.
Crossref

 

CIMMYT -International Maize and Wheat Improvement Center (1988). From agronomic data to farmer recommendations: an economics training manual. Mexico, D.F.

 

Food and Agriculture Organization Corporate Statistical Database (FAOSTAT) (2011). Food and Agriculture Organization, Rome. 

View

 

Foster HL (1981). The basic factors which determine inherent soil fertility in Uganda. J. Soil Sci. 32:149-160.
Crossref

 

Galabi TJ, Camara M, Yao-Kouame A, Keli ZJ (2011). Profitability of mineral fertilizers in upland rice tray in Gagnoa area in central western Ivory Coast. J. Appl. Biosci. 46:3153-3162.

 

Gitau R, Mburu S, Mathenge M, Smale M (2011). Trade and agricultural competitiveness for growth, food security and poverty reduction: A case study of wheat and rice production in Kenya. WPS 45/2011. Tegemeo Institute of Agricultural Policy and Development. Nairobi, Kenya P 69.

 

Government of the Republic of Uganda (2009). Uganda national rice development strategy. Report of the Ministry of Agriculture, Animal Industry, and Fisheries. Kampala, Uganda.

 

Jones E (1972). Principles of using fertilizers to improve red ferrallitic soils in Uganda. Exp. Agric. 8:315-332.
Crossref

 

Kaizzi CK, Ssali H, Nansamba A, Vlek PLG (2007). The potential benefits of Azolla, velvet bean (Mucuna pruriens) and N fertilizers in rice production under contrasting systems of eastern Uganda. In. Bationo A, Kihara J, Kimetu J, Waswa B (eds) Advances in Integrated Soil Fertility Research in Sub-Saharan Africa: Challenges and Opportunities. Springer, The Netherlands, Pp. 423-433.
Crossref

 

Mehlich A (1984). Mehlich 3 soil test extractant: A modification of Mehlich 2 extractant. Commun. Soil Sci. Plant Anal. 15:1409-1416.
Crossref

 

Mghase JJ, Shiwachi H, Nakasone K, Takahashi H (2010). Agronomic and socio-economic constraints to high yield of upland rice in Tanzania. Afr. J. Agric. Res. 5:150-158.

 

Miyamoto K, Maruyama A, Haneishi Y, Matsumoto S, Tsuboi T, Asea G, Okello S, Takagaki M, Kikuchi M (2012). NERICA cultivation and its yield determinants: the case of upland rice farmers in Namulonge, Central Uganda. J. Agric. Sci. 4:120-135.
Crossref

 

Oikeh SO, Nwilene F, Diatta S, Osiname O, Touré A, Okeleye KA (2008). Responses of upland NERICA rice to nitrogen and phosphorus in forest agroecosystems. Agron. J. 100:735-741.
Crossref

 

Oikeh SO, Somado EA, Sahrawat KL, Toure A, Diatta S (2010). Integrated soil fertility management involving promiscuous dual-purpose soybean and upland NERICA enhanced rice productivity in the savannas. Nutr. Cycl. Agroecosyst. 88:29-38.
Crossref

 

Onaga G, Asea G, Lammo J, Kikafunda J, Bigirwa G (2012). Comparison of response to nitrogen between upland NERICAs and ITA (Oryza sativa) rice varieties. J. Agric. Sci. 4:197-205.
Crossref

 

Sahrawat KL (2000). Determining fertilizer phosphorous requirement for upland rice. Commun. Soil Sci. Plant Anal. 31:1195-1208.
Crossref

 

Sanchez PA (2002). Soil fertility and hunger in Africa. Science 295:2019-2020.
Crossref

 

Vlek PLG (1990). The role of fertilizers in sustaining agriculture in sub-Saharan Africa. Fertil. Res. 26:327-339.
Crossref

 

Walkley A, Black IA (1934). An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Sci. 37:29-37.
Crossref

 

West Africa Rice Development Association (WARDA) (2007). Africa Rice Trends: Overview of Recent Developments in the Sub-Saharan Africa Rice Sector. Africa Rice Center Brief. Cotonou, Benin.

 

Wortmann CS, Eledu CA (1999). Uganda's agroecological zones: A guide for planners and policy makers. CIAT, Kampala, Uganda.

 

Wortmann CS, Kaizzi CK (1998). Nutrient balances and expected effects of alternative practices in farming systems of Uganda. In. Smaling EMA (ed) Nutrient balances as indicators of productivity and sustainability in sub-Saharan African agriculture. Agric. Ecosyst. Environ. 71:115-130.
Crossref

 

Wortmann CS, Ssali H (2001). Integrated nutrient management for resource-poor farming systems: A case study of adaptive research and technology dissemination in Uganda. Am. J. Altern. Agric. 16:161-167.
Crossref

 


APA Kaizzi, K. C., Nansamba, A., Kabanyoro, R., Lammo, J., & Rware, H. (2018). Upland rice response to fertilizer in three agro-ecological zones of Uganda. African Journal of Plant Science, 12(3), 65-72.
Chicago Kayuki C. Kaizzi, Angella Nansamba, Ruth Kabanyoro, Jimmy Lammo and Harrison Rware  . "Upland rice response to fertilizer in three agro-ecological zones of Uganda." African Journal of Plant Science 12, no. 3 (2018): 65-72.
MLA Kayuki C. Kaizzi, et al. "Upland rice response to fertilizer in three agro-ecological zones of Uganda." African Journal of Plant Science 12.3 (2018): 65-72.
   
DOI https://doi.org/10.5897/AJPS2017.1583
URL http://www.academicjournals.org/journal/AJPS/article-abstract/80FFFF955973

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