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Effects of organic nitrogen fortifiers on some growth parameters of green amaranths (Amaranthus caudatus L.)

Published online by Cambridge University Press:  19 November 2009

O.O. AdeOluwa ,
G.O. Adeoye  and
S.A. Yusuff
O.O. AdeOluwa*
Affiliation:
Department of Agronomy, University of Ibadan, Ibadan, Nigeria.
G.O. Adeoye
Affiliation:
Department of Agronomy, University of Ibadan, Ibadan, Nigeria.
S.A. Yusuff
Affiliation:
Department of Agronomy, University of Ibadan, Ibadan, Nigeria.
*
*Corresponding author: [email protected]
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Abstract

Chemical fertilizers for boosting crop production are becoming more expensive and scarce. Green amaranth (Amaranthus caudatus L.) is a fast growing and highly nutritious crop, but its common use in the diet of Nigerians is constrained by its high demand for nitrogen fertilizer. Thus, there is a need to find local fertilizer materials that are readily available to peasant farmers. A preliminary field study was conducted to evaluate urine and neem (Azadirachta indica L. juss) as alternative sources for mineral fertilizers in fortifying organic fertilizer (OF) made from cow dung and market waste compost, and OF fortified with urea and bone meal [organo-mineral fertilizer (OMF)], for yield and growth of green amaranth. Fifteen treatments, based on the percentages of N supplied, were NPK15-15-15, OMF, OF, urine, neem and ten treatments of 50, 60, 70, 80 or 90% OF supplemented with a total of 50, 40, 30, 20 and 10% urine or neem, respectively, to provide a total application rate of 100 kg N ha−1, with no fertilizer treatment as a control. Planting was done in two successions (main with fertilizer treatments and residual without further application). The fertilizer sources and levels had significant effects on plant height, number of leaves, stem girth, fresh weight and dry weight. The residual effects were also significant for plant height, number of leaves, total fresh and dry weights. Forty percent N urine amendment of the OF produced the highest total fresh amaranth biomass (269.3 g plot−1 main effect and 110.8 g plot−1 residual effect), which was significantly better than the values of (140 and 35.3 g plot−1, respectively) obtained with respect to OMF during main planting and NPK during residual planting. Results of our study reveal that 40% N urine fortification of OF was a viable substitute for synthetic fertilizers in production of amaranth, and that urine and neem cake can be alternatives to mineral fertilizer for crop production.

Keywords

urineneemamaranthfertilizer fortificationsoil fertility
Type
Research Papers
Information
Renewable Agriculture and Food Systems , Volume 24 , Issue 4 , December 2009 , pp. 245 - 250
Copyright
Copyright © 2009 Cambridge University Press

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References

1Parr, J.F., Papendick, R.I., and Colacicco, D. 1989. Recycling of organic waste for suistainable agriculture. Biological Agriculture and Horticulture 3:115–130.CrossRefGoogle Scholar
2Ayoub, A.T. 1991. An assessment of human induced soil degradation in Africa. In Proceedings of the Second African Soil Science Conference, Cairo, Egypt. p. 17–23.Google Scholar
3Agboola, A.A. 1978. Influence of soil organic matter on cowpea response to nitrogen fertilizer. Agronomy Journal 70:25–28.CrossRefGoogle Scholar
4Adeoye, G.O., Sridhar, M.K.C., AdeOluwa, O.O., and Akinsoji, N.A. 2005. Evaluation of naturally decomposed solid wastes from municipal dump site for their manurial value in south-west. Journal of Sustainable Agriculture 26(4):143–152.Google Scholar
5Babalola, O. 2000. Soil management and conservation in Nigeria. In Akoroda, M.O. (ed.). Agronomy in Nigeria. Agronomy Re-union Day: A Book on the Theory and Practice of Agronomy as it has been in the last 33 years from July 1967 to the Present in Support of the Department of Agronomy, University of Ibadan, Nigeria.Google Scholar
6Greenland, D.J. and Dart, J.P. 1972. Biological and organic aspect of plant nitrification in relation to needed research in tropical soils. Tropical Soils Research Seminar IITA, Ibadan.Google Scholar
7Agboola, A.A. 1975. Organic materials as fertilizers. Report of the FAO/SIDA Expert Consultation, Rome, 2–6 December 1974.Google Scholar
8Williams, R. 2002. Free Urea Based Fertilizer. http://www.Ronwilliams2002.com.Google Scholar
9Salako, E.A., Anjorin, S.T., Garba, C.D., and Omolohunnu, E.B. 2008. A review of neem biopesticide utilization and challenges in Central Northern Nigeria. African Journal of Biotechnology 7(25):4758–4764.Google Scholar
10Höglund, C. 2001. Evaluation of microbial health risks associated with the reuse of source separated human urine. PhD thesis, Department of Biotechnology, Royal Institute of Technology, Stockholm, Sweden.Google Scholar
11Matsui, S. 1997. Night soil collection and treatment, Japanese practice and suggestion for sanitation of other areas of the globe. Paper Presented at the Sida Sanitation Workshop, 6–9 August 1997 at Balingsholm, Stockholm. Sida Report No. 9.Google Scholar
12Esrey, S.A., Gough, J., Rapaport, D., Sawyer, R., Simpson-Hébert, M., Vargas, J., and Winblad, U. 1998. Ecological Sanitation. Swedish International Development Cooperation Agency, Stockholm, Sweden.Google Scholar
13International Federation of Organic Agriculture Movements—IFOAM. 2000. Basic Standards for Organic Production and Processing Decided by the IFOAM General Assembly in Basel, Switzerland, September 2000. International Federation of Organic Agriculture Movements.Google Scholar
14Adeoye, G.O., Sridhar, M.K.C., AdeOluwa, O.O., and Akinsoji, N.O. 2005. Evaluation of naturally solid wastes from municipal dumpsites for their value in south west Nigeria. Journal of Sustainable Agriculture 26(4):143–152.CrossRefGoogle Scholar
15Sridhar, M.K.C., Adeoye, G.O., and AdeOluwa, O.O. 2001. Alternate to nitrogen amendments for organic fertilizers. Optimizing Nitrogen Management in Food and Energy Production and Environmental Protection. Scientific World Journal 19(12 Suppl 2):142–147.CrossRefGoogle Scholar
16AdeOluwa, O.O. 1999. Effects of Gliricidia sepium amendment of compost on Amaranthus caudatus. MSc Report, Department of Agronomy, University of Ibadan.Google Scholar
17Grubben, G.J.H. and Van Slotten, D.H. 1978. Genetic resources of amaranths. IBPGR Secretariat, FAO, Rome.Google Scholar
18Cooke, C.W. 1972. Fertilizing for Maximum Yield. The English Language Book Society and Granada, London.Google Scholar
19Perverly, J.H. and Gates, P.B. 1993. Utilization of municipal solid waste and sludge composts in crop production systems in sewage sludge. Proceedings of a Conference on Land Utilization and the Environment. Bloomington, IN, USA, 11–12 August 1993. American Society of Agronomy, Madison, USA.Google Scholar