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Asian Journal of Agricultural Research
  Year: 2015 | Volume: 9 | Issue: 6 | Page No.: 276-292
DOI: 10.3923/ajar.2015.276.292
 
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Comparative Evaluation of Burnt and Unburnt Agro-Wastes on Soil Properties and Growth Performance of Cocoyam in a Humid Environment

S.U. Onwudike, D.O. Asawalam and A.O. Ano

Abstract:
Field studies were carried out in 2011 and 2013 planting seasons at the Teaching and Research Farm of Federal University of Technology, Owerri Imo State to evaluate the effect of burnt and unburnt agro-wastes on soil properties, growth and yield of cocoyam (Colocasia esculenta) in a Typic-Haplustult. Treatments consisted of saw dust, rice mill waste, cocoa pod waste each applied at 10 t ha–1 and saw dust ash, rice mill waste ash and cocoa pod ash each applied at 5 t ha–1 and control. The treatments were laid out in a randomized complete block design and replicated four times. Data collected from soil analyses and growth performances of cocoyam were subjected to analysis of variance, while, significant means among treatments were separated using least significant difference at 5% probability level. Results obtained showed that plots amended with 10 t ha–1 cocoa pod waste significantly (p<0.05) reduced soil bulk density from 1.55-1.37 g cm-3 in 2011 and 1.49-1.36 g cm-3 in 2013, while, plots amended with 10 t ha–1 rice mill waste increased soil moisture content from 128.6-158.7 g kg–1 in 2011 and 113.3-150.8 g kg–1 in 2013. Plots amended with 10 t ha–1 cocoa pod waste significantly (p<0.05) increased soil organic carbon from 9.2-17.6 g kg–1 in 2011 and 7.15-16.73 g kg–1 in 2013, total nitrogen from 1.21-5.38 g kg–1 in 2011 and 1.38-4.88 g kg–1 in 2013, available P from 15.70-29.75 mg kg–1 in 2011 and 13.22-28.43 mg kg–1 in 2013. Plots amended with 10 t ha–1 cocoa pod increased the growth parameters of cocoyam more than other treatments with the highest cocoyam yield of 4.33 and 8.94 t ha–1 obtained in 2011 and 2013, respectively. About 10 t ha–1 cocoa pod waste was recommended for improvement of soil fertility, growth and yield of cocoyam in acidic soils of Owerri, Southeastern Nigeria.
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How to cite this article:

S.U. Onwudike, D.O. Asawalam and A.O. Ano, 2015. Comparative Evaluation of Burnt and Unburnt Agro-Wastes on Soil Properties and Growth Performance of Cocoyam in a Humid Environment. Asian Journal of Agricultural Research, 9: 276-292.

DOI: 10.3923/ajar.2015.276.292

URL: https://scialert.net/abstract/?doi=ajar.2015.276.292

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