Vermicomposting of Waste Corn Pulp Blended with Cow Dung Manure using Eisenia Fetida

Waste corn pulp was investigated as a potential feedstock during vermicomposting using Eisenia fetida. Corn pulp is the major staple food in Southern Africa and constitutes about 25% of the total organic waste. Wastecooked corn pulp was blended with cow dung in the ratio 6:1 respectively to optimize the vermicomposting process. The feedstock was allowed to vermicompost for 30 days. The vermicomposting took place in a 3- tray plastic worm bin. Moisture content, temperature, pH, and electrical conductivity were monitoreddaily. The NPK content was determined at day 30. During vermicomposting, moisture content increased from 27.68% to 52.41%, temperature ranged between 19- 25◦C, pH increased from 5.5 to 7.7, and electrical conductivity decreased from 80000μS/cm to 60000μS/cm. The ash content increased from 11.40% to 28.15%; additionally the volatile matter increased from 1.45% to 10.02%. An odorless, dark brown vermicompost was obtained. The vermicompost NPK content was 4.19%, 1.15%, and 6.18% respectively.





References:
[1] P.M.Ndegwa and S.A.Thompson, "Integrating composting and
vermicomposting in the treatment and bioconversion of biosolids",
J.Bioresourse Technology, vol. 76, pp. 107-112, 2001.
[2] J. Palsania, R Sharma, J.K Srivastava and D. Sharma, "Effect of
moisture content variation over kinetic reaction rate during
vermicomposting process", J. Applied Ecology and Environmental
Research, vol.6(2) pp. 49-61, 2008.
[3] M. Aira, F. Monroy and J. Domínguez, "Eisenia fetida
(Oligochaeta:Lumbricidae) modifies the structure and physiological
capabilities of microbial communities improving carbon mineralization
during vermicomposting of pig manure", J.Microbial Ecology, vol. 54,
pp. 662-671, 2007.
[4] A.A. Ansari and J. Rajpersaud, "Physicochemical changes during
vermicomposting of water hyacinth (Eichhorniacrassipes) and grass
clippings", ISRN Soil Science, Article ID.984783, pp.1-6, 2012.
[5] N. B. Singh, A.K. Khare, D.S. Bhargava and S. Bhattacharya, "Effect of
initial substrate pH on vermicomposting using Perionyx Excavatus
(Perrier, 1872)",J. Applied Ecology and Environmental Research, vol.
4(1), pp. 85-97, 2005.
[6] A.A.Ansari and K. Sukhraj, "Effect of vermiwash and vermicompost on
soil parameters and productivity of okra (Abelmoschus esculentus) in
Guyana",African J. Agricultural Research, vol. 5(14), pp. 1794-1798,
2010.
[7] A.A.Ansari and S. Jaikishun, "An investigation into the
vermicomposting of sugarcane bagasse and rice straw and its subsequent
utilization in cultivation of PhaseolusvulgarisL. In Guyana", American-
Eurasian J. Agriculture and EnvironmentScience, vol. 8(6), pp. 666-671,
2010.
[8] P.S.Chaudhuri, T.K. Pal, B. Gautam and S.K. Dey, "Chemical changes
during vermicomposting (Perionyx Excavatus) of kitchen wastes", J.
Tropical Ecology, vol. 41(1), pp. 107-110, 2000.
[9] K. Muthukumaravel, A.Amsath and M. Sukumaran, "Vermi-composting
of vegetable wastes using cow dung",E-J. Chemistry, vol. 5(4), pp810-
813, 2008.
[10] S. Indrajeet, N.Rai and J. Singh, "Vermicomposting of farm garbage
manure in different combination", J.Recent Advances in Applied
Sciences, vol. 25, pp.15-18, 2010.
[11] C.A. Edwards, J.Domínguezand E.F. Neuhauser, "Growth and
reproduction of Perionyx Excavatus (Perr.)(Megascolecidae) as factors
in organic waste management", J.Biology and Fertilityof Soils, vol. 27,
pp. 155-161,1998.
[12] K. Tharmaraj, P. Ganesh, K. Kolanjinathan, K. R. Suresh and A.
Anandan, "Influence of vermicompost and vermiwash on
physicochemical properties of rice cultivated soil". J. Current Botany,
vol. 2(3), pp. 18-21, 2011.