• A. A. OLUBODE Department of Soil Science and Land Management, Federal University of Agriculture, Abeokuta, Nigeria
  • A. SORETIRE Department of Soil Science and Land Management, Federal University of Agriculture, Abeokuta, Nigeria.
  • N. O. ADEYEMI Department of Plant Physiology and Crop Production, Federal University of Agriculture, Abeokuta, Nigeria
Keywords: Cow dung, organic carbon, soil microorganisms, soil pH, soybean yield, wood ash


Organic production methods which include the exclusion of chemical approach of soil amendment have been observed to improve plant growth and preserve the soil health and biodiversity of production environment. A study was conducted at the Federal University of Agriculture, Abeokuta, to examine the influence of organic manure and wood ash on the abundance of soil microorganisms, organic carbon and yield of soybean in acid soil. The study consisted of three rates of wood ash (0, 2.5 and 5.0 t ha-1) and three rates of cow dung (0, 5.0 and 10.0 t ha-1) arranged in completely randomized design, replicated three times. Soybean variety TGX 1485 – ID was sown into 5 kg. The results showed that wood ash application at 5.0 t ha-1 significantly increased the soil pH (6.6), organic carbon (7.48) and soil microbial population (110 × 104 cfu g-1) compared to lower rate of 2.5 t ha-1 and control, which resulted in highest number of pods (7.7) and grain yield (14.2 g per plant) at harvest. Cow dung treatment of 10 t ha-1 significantly had highest soil organic carbon (7.39%) at 8 WAP and soil microbial population (21.1 and 91.4 × 104 cfu g-1) at 4 and 8 WAP respectively. These findings indicate that application of wood ash may be an acceptable alternative liming agent to the inorganic soil amendment and higher soybean productivity.




Adediran, J.A., Taiwo, J.A., Akande, M.O., Sobulo, R. A., Idowu, O. J. 2004. Application of organic and inorganic fertilizer for sustainable maize and Cowpea yields in Nigeria. Journal Plant of Nutrition. 27 (7): 1167-1181.

Amakiri, M.A 2000. Microbes Moving the World Forward in The New Millennium; Inaugural Lecture delivered on 29 Nov. 2000 at the Rivers State University of Science and Technology, Nkpolu- Oroworukwu, Port Harcourt 2000, pp. 50-51.

Bhandari A, Ladha J, Pathak H, Padre H, Dawe D, et al. 2002. Yield and soil nutrient changes in a long-term rice-wheat rotation in India. Soil Sci.Soc Am J. 66: 162–170.

Bouyoucos, G. H. 1951. A recaliwasration of the hydrometer method for testing mechanical analysis of soils. Agron. J. 43:434 – 438.

Demeyer, A., VoundiNkana, J.C., Verloo, M.G. 2001. Characteristics of wood ash and influence on soil properties and nutrient uptake: an overview. Bioresource Technology 77: 287–295.

Drenovsky, R., Vo, D., Graham, K., Scow, K. M. 2004. Soil water content and organic carbon availability are major determinants of soil microbial community composition. Microb Ecol Vol. 48 (3): 424–430,

Duffera, M., Robarge, W.P., Mikkelsen, R.L. 1999. Estimating the Availability of Nutrients from Processed Swine Lagoon Solids through Incubation Studies. Bioresource Technology, 70, 261-268.

Escobar, M.E.O., Hue, N.V. 2008. Temporal Changes of Selected Chemical Properties in Three Manure Amended Soils of Hawaii. Bioresource Technology, 99, 8649-8654.

Ferguson, B.J.,d Gresshoff, P.M. 2009. Soybean as a model legume. Grain Legumes: 53: 7.

Franche, C., Kristina Lindström, K., and Elmerich, C. 2009. Nitrogen-fixing bacteria associated with leguminous and non-leguminous plants. Plant Soil (2009) 321:35–59. DOI 10.1007/s11104-008-9833-8

Fritze H, Smolander A, Levula T, Kitunen, V., Mälkönen, E. 1994. Wood ash fertilization and fire treatments in a Scots pine forest stand: effects on the organic layer, microbial biomass, and microbial activity. Biol Fertil Soils 17:57–63.

Goodwin, E., Burrow, A. M. 2006. Effects of application of mill-generated primary sludge and boiler ash on Loblolly pine survival and growth. In: Connor KF (eds), Proceedings of the13th Biennial Southern Silvicultural Research Conference,Memphis, Tennessee, February 28–March 4 2005. General Technical Report SRS–92. Asheville, NC: US Department of Agriculture, Forest Service, Southern Research Station. pp 135–138.

Gregorich E, Liang B, Ellert B, Drury CF 1996. Fertilization effects on soil organic matter turnover and corn residue C storage. Soil Sci Soc Am J 60: 472–476

Hao X, Liu S, Wu J, Hu R, Tong C, et al. 2008. Effect of long-term application of inorganic fertilizer and organic amendments on soil organic matter and microbial biomass in three subtropical paddy soils. Nutr Cycl Agroecosys 81: 17–24

Holmberg, S.L., Claesson, T. 2001 Mineralogy of granulated wood ash from a heating plant in Kalmar, Sweden. Environ Geol 40: 820–828.

Huotari, N., Tillman-Sutela, E., Moilanen, M., Laiho, R. 2015. Recycling of ash – For the good of the environment? Forest Ecology and Management, 348, 226–240.

Kahl, J. S., Fernandez, I. J., Rustad, L. E., Peckenham, J.1996. Threshold application rates of wood ash to an acid forest soil. J. Environ. Qual., 25: 220-227.
Kang, B. T., Juo, A. S. R. 1980. Management of low-activity clay soils in Tropical Africa for food crop production. In: Terry, E. R, Oduro, K. A and Caveness, F. eds. Tropical root crops: research strategies for the 1980s. IDRC, Ottawa, Ontario, Canada. 129–133.

Kuokkanen, M., Kuokkanen, T., Stoor, T., Niinimäki, J., Pohjonen, V. 2009. Chemical Methods in the Development of Eco-Efficient Wood-Based Pellet Production and Technology. Waste Management and Research, 27(6):561-571.

Mullins, G. L., Bendfeldt, E. S., Clarik, R. A. 2002. Poultry litter as a fertilizer and soil amendment. Virginia Cooperative Extension. Publication Number, 24, 24–034.

Nicholson, W. L., Munakata, N., Horneck, G., Melosh H. J., Setlow P. 2000. Resistance of Bacillus endospores to extreme terrestrial and extra-terrestrial environments. Microbiol. Mol. Biol. Rev.64 548–572.
NISER (2003) Nigerian Institute of Social and Economic Research (NISER). Understanding Poverty in Nigeria. College Press and Publishers Limited. Ibadan Nigeria. Pp 441.

Okpara, D. A., Muoneke, C. O., Ihediwa, N. 2007. Influence of liming on the performance of high-yielding soybean varieties in southeastern, Nigeria. Agro science 6(2): 16-24.

Olutiola, P. O., Famurewa, O., Sonntag, H. S. 1991. An introduction to general microbiology: A practical approach. Heidelberger Velagsaustaig and Duckerei, Gmbh Heidelberg.p 267.

Perucci, P., Monaci, E., Onofri, A., Vischetti, C., Casucci, C. 2008. Changes in physico-chemical and biochemical parameters of soil following addition of wood ash: a field experiment. European Journal of Agronomy 28: 155–161.

Pitman, R. 2006. Wood ash use in forestry – a review of the environmental impacts. Forestry 79: 563–588.

Rajapaksha R.M.C.P., Tobor-Kapon M.A., Baath E. 2004. Metal toxicity affects fungal and bacterial activities in soil differently. Appl. Environ. Microbiol.70: 2966–2973.

Rispail, N., Kalo, P., Kiss, G. B., Ellis, T.H.N., Gallardo, K., Thompson, R. D., Prats E, Larrainzar E, Ladrera R, González EM, Arrese-Igor C, Ferguson BJ, Gresshoff PM, Rubiales D 201.) Model legumes contribute to faba bean breeding. Field Crops Research 115: 253-269.

Saarsalmi, A., Smolander, A., Kukkola, M., Moilanen, M., Saramäki, J. 2012. 30-Year effects of wood ash and nitrogen fertilization on soil chemical properties, soil microbial processes and stand growth in a Scots pine stand. Forest Ecology and Management 278: 63–70

SAS 1990. Statistical Analysis System SA/STAT Users’ Guide. Version 6 Fourth Edn. Cary, NC: SAS Institute.

Steenari, B.M., Karlsson, L.G., Lindqvist, O. 1999 Evalation of the leaching characteristics of wood ash and the influence of ash agglomeration. Biomass Bioenerg16: 119–136.

Tilman, D., Cassman, K.G., Matson, P.A., Naylor, R. S., Polasky 2002. Agricultural sustainability and intensive production practices, Nature 418: 671-677.

Walkley, A., Black, I.A. 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: 29-38.

Wilcox, J. R., Shibles, R. M 2001. Interrelationships among seed quality attributes in Soybean. Crop Sciences. 41(1):11-14.

Williams, C.N., Chew, W.Y., Rajaratnam, J.A. 1980. Tree and field Crops of the Wetter. Longman, London, 262p

Wong, M.T.F., Swift, R.S. 2003. Role of Organic Matter in Alleviating Soil Acidity. In: Rengel, Z., Ed., Handbook of Soil Acidity, Marcel Dekker, Inc., New York, 337-358.

Yagoub, S. O., Salam, S. K., Hassan, M. M., Hassan, M. A 2015. Effects of organic and mineral fertilizers on growth and yield of soybean ( Glycine max L. Merril) International Journal of Agronomy and Agricultural Research (IJAAR) ISSN: 2223-7054 (Print) 2225-3610 (Online) Vol. 7, No. 1, p. 45-52,

Zimmermann, S., Frey, B. 2002 Soil respiration and microbial properties in an acid forest soil: effects of wood ash. Soil Biol Biochem 34:1727–1737.
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