The influence of vermicompost on the growth and productivity of cymbidiums

The effects of cattle manure vermicompost on the growth and productivity of cymbidium (Cymbidium sp.) plants were evaluated under shade conditions. Cymbidium was grown in a container medium including 50% pumice, 30% charcoal, 10% vermiculite and 10% peat moss, which was basic plant growth medium substituted with 10%, 20%, 30% and 40% (by volume) vermicompost. The control consisted of container medium alone without vermicompost. Plants were supplied regularly with a complete mineral nutrient solution. The greatest vegetative growth resulted from substitution of container medium with 30% and 40% vermicompost, and the lowest growth was in the potting mixtures containing 0% vermicompost. Most flower buds and inflorescences occurred in the potting mixture containing 30% and 40% vermicompost, and the greatest length of inflorescences was observed in 30% vermicompost. Cymbidium grown in a container medium substituted with 30% and 40% had the most and greatest number of flowers. Some of the cymbidium growth and productivity enhancement, resulting from substitution of container medium with vermicompost, may be explained by nutritional factors; however, other factors, such as plant- growth-regulators and humates, might have also been involved since all plants were supplied regularly with all required nutrients.
 
REFERENCES
Arancon, N.Q., Edwards, C.A., Babenko, A., Cannon, J., Galvis, P. and Metzger, J.D. (2008) Influences of vermicomposts, produced by earthworms and microorganisms from cattle manure, food waste and paper waste, on the germination, growth and flowering of petunias in the greenhouse. Appl. Soil Eco. 39, 91-99.
Atiyeh, R.M., Edwards, C.A., Subler, S. and Metzger, J.D. (2001) Pig manure vermicompost as a component of a horticultural bedding plant medium: effects on physicochemical properties and plant growth. Biores. Tech. 78, 11- 20.
Atiyeh, R.M., Arancon, N.Q., Edwards, C.A. and Metzger, J.D. (2002) The influence of earthworm-processed pig manure on the growth and productivity of marigolds. Biores. Tech. 81, 103- 108.
Bachman, G.R. and Metzger, J.D. (2008) Growth of bedding plants in commercial potting substrate amended with vermicompost. Biores. Tech. 99, 3155-3161.
Gajalakshmi, S. and Abbasi, S.A. (2002) Effect of the application of water hyacinth compost/vermicompost on the growth and flowering of Crossandra undulaefolia, and on several vegetables. Biores. Tech. 85, 197- 199.
Gutie´rrez-Miceli, F.A., Moguel-Zamudio, B., Abud-Archila, M., Gutie´rrez-Oliva, V.F. and Dendooven, L. (2008) Sheep manure vermicompost supplemented with a native diazotrophic bacteria and mycorrhizas for maize cultivation. Biores. Tech. 99, 7020-7026.
Nikbakht, A., Kafi, M., Babalar, M., Xia, Y.P., Luo, A. and Etemadi, N. (2008) Effect of humic acid on plant growth, nutrition uptake and postharvest life of Gerbera. J. of Plant Nutr. 31, 2155- 2167.
 Paradelo, R., Moldes, A.B. and Barral, M.T. (2008) Properties of slate mining wastes incubated with grape marc compost under laboratory conditions. Waste Manag. 1-6.
Singh, R., Sharma, R.R., Kumar, S., Gupta, R.K. and Patil, R.T. (2008) Vermicompost substitution influences growth, physiological disorders, fruit yield and quality of strawberry (Fragaria x ananassa Duch.). Biores. Tech. 99, 8507-8511.
Smith, C.J., Bond, W.J. and Wang, W. (1999) Waste- free: vermicompost to improve agricultural soils. CSIRO Land and Water, ACT 2601, Australia. pp. 1-21.
Vetal, A.A., Dutt, M. and Sonwane, P.C. (2003) Relative performance of Lilium (Lilium speciosum) in various substrates under polyhouse conditions. Crop Res. 25, 78-82.