Compost enriched with effective microorganism and Bordeaux mixture on ginger bacterial wilt (Ralstonia solanaceurum) Epidemics in southwestern, Ethiopia

Merga Jibat Guji, Mulukan Asfaw


Ginger is one of the most widely cultivated spice grown in various cropping systems and locations throughout the southwestern Ethiopia. Bacterial wilt, caused by Ralstonia solanacearum, is one of the serious diseases of ginger in Ethiopia. Field experiments were conducted during 2019 and 2020 to assess effects of soil amendments on bacterial wilt development and epidemics at Tepi, southwestern Ethiopia. Three soil amendments practices: compost, effective microorganisms and Bordeaux mixture alone and in integration were evaluated. Treatments were arranged in a randomized complete block design with three replications. Compost at the rate of 7 ton/ha enriched with effective microorganisms and Bordeaux mixture treatment significantly reduced ginger bacterial wilt incidence, area under disease progress curve and disease progress rate. This treatment reduced bacterial wilt mean incidence up to 21.08 % as compared to untreated control plot. Compost at the rate of 7 ton/ha also slowed down epidemic progression of bacterial wilt and significantly reduced the disease parameters when effective microorganisms and Bordeaux mixture were integrated. The overall results indicated that integrated compost enriched with effective microorganisms and Bordeaux mixture was effective to slow down the epidemics of ginger bacterial wilt and sustain ginger production and productivity. Hence, integrated compost enriched with effective microorganisms and Bordeaux mixture along with other crop management systems are recommended to improve ginger production and productivity at southwestern Ethiopia and other similar ecologies. 

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APNAN, H. 1995. EM application manual for APNAN countries. ASIA-Pacific National Agriculture Network.

Ayana, G., Fininsa, C., Ahmed, S. & Wydra, K. 2011. Effects of soil amendment on bacterial wilt caused by Ralstonia solanacerum and tomato yields in Ethiopia. Journal of plant protection research.

Bailey, K.L., & Lazarovits, G. 2003. Suppressing soil-borne diseases with residue management and organic amendments. Soil and tillage research, 72(2), pp.169-180.

Baker, R. & Paulitz, T.C. 1996. Theoretical basis for microbial interactions leading to biological control of soilborne plant pathogens. Principles and Practice of Managing Soilborne Plant Pathogens. R. Hall, ed. American Phytopathological Society, St. Paul, MN, pp.50-79.

Binyam, T., Temam, H., & Tekalign, T. 2014. Efficacy of Reduced Dose of Fungicide Sprays in the Management of Late Blight (Phytophthora infestans) Disease on Selected Potato (Solanum tuberosum L.) Varieties Haramaya, Eastern Ethiopia. Journal of Biology, Agriculture and Healthcare.

Campbell, C. L., & V. L. Madden. 1990. Introduction to Plant Disease Epidemiology. Wiley, New York, USA. 532 PP.

Girma, H., & Digafie, T. 2004. Annual Report on the Current Status of Spice s Research, Jimma, Agricultural Research Centre, Teppi Agricultural Research Sub Centre, pp. 35-48.

Gomez, K.A., & Gomez, A.A. 1984. Statistical Procedures for Agricultural Research, 2nd Edition. John Wiley and Sons Inc, New York, US. 680pp.

Guji, M.J., Yetayew, H.T., & Kidanu, E.D. 2019. Yield loss of ginger (Zingiber officinale) due to bacterial wilt (Ralstonia solanacearum) in different wilt management systems in Ethiopia. Agriculture & Food Security, 8(1), pp.1-11.

Habetewold, K., Bekelle, K., Kasahun, S., & Tariku, H. 2015. Prevalence of Bacterial Wilt of Ginger (Zingiber Officinale) Caused by Ralstonia Solansearum (Smith) in Ethiopia. International Journal of Research Studies in Agricultural Sciences, 6:14-22.

Haggag, W.M., & Saber, M.S.M. 2007. Suppression of early blight on tomato and purple blight on onion by foliar sprays of aerated and non-aerated compost teas. Journal of Food, Agriculture and Environment, 5(2): 302-309.

Higa, T., & Parr, J.F. 1994. Beneficial and effective microorganisms for a sustainable agriculture and environment (Vol. 1). Atami: International Nature Farming Research Center.

Hoitink, H.A.J., Stone, A.G., & Han, D.Y. 1997. Suppression of plant diseases by composts. HortScience, 32(2), pp.184-187.

Islam, T.M., & Toyota, K. 2004. Suppression of bacterial wilt of tomato by Ralstonia solanacearum by incorporation of composts in soil and possible mechanisms. Microbes and environments, 19(1), pp.53-60.

Jansen, P.C.M. 1981. Spices, Condiments and Medicinal plants in Ethiopia: Their Taxonomy and Agricultural significance. Centre for Agriculture publishing and documentation, Wageningen, The Netherlands. Serratia. Journal of General Microbiology, 98:39-66.

Masyitah, O. 2004. Development of disease surppressive compost, and potting mixture for control of bacterial wilt of tomato. Unpublished M. Sc. Thesis, University Protra Malaysia.

Neher, D.A., Weicht, T.R., & Dunseith, P. 2014. Compost for management of weed seeds, pathogen, and early blight on Brassicas in organic farmer fields. Agroecology and Sustainable Food Systems, 1-27.

Sang, M.K., Kim, J.G., & Kim, K.D. 2010. Biocontrol activity and induction of systemic resistance in pepper by compost water extracts against Phytophthora capsici. Phytopathology, 100(8): 774-783.

Sharma, B.R., Dutta, S., Roy, S., Debnath, A., & Roy, M.D. 2010. The effect of soil physico- chemical properties on rhizome rot and wilt disease complex incidence of ginger under hill agro climatic region of West Bengal. Journal of Plant Pathology, 26:198-202.

Singh, D., Yadav, D.K., Chaudhary, G., Rana, V.S., & Sharma, R.K. 2016. Potential of Bacillus amyloliquefaciens for biocontrol of bacterial wilt of tomato incited by Ralstonia solanacearum. Journal of Plant Pathol Microbiol, 7(327), pp.1-6.

Stone, A.G., Vallad, G.E., Cooperband, L.R., Rotenberg, D., Darby, H.M., James, R.V., Stevenson, W.R., & Goodman, R.M. 2003. The effect of organic amendments on soilborne and foliar diseases in field grown snap bean and cucumber. Plant Disease, 87: 1037-1042.

Van der Plank, J.E. 1963. Plant diseases: Epidemics and Control. Academic Press, London, UK.var. Varada. 349 pp.

Ewa Laskowska, Łukasz Jarosz, Zbigniew Grądzki. 2017. The effect of feed supplementation with effective microorganisms (EM) on pro- and anti-inflammatory cytokine concentrations in pigs. Research in Veterinary Science. Volume 115 (244-249).

Kripa Dhakal, Ramasamy Ravi, Dilip Nandwani. 2021. Comparative Study of Sensory Attributes of Leafy Green Vegetables Grown Under Organic and Conventional Management. International Journal of Food, Agriculture, and Natural Resources. Vol 2 (3):29-45.



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