Getachew Ayana, Endriyas Gabrekiristos


Tomato is one of the most popular vegetables grown throughout the world in general and in Ethiopia in particular. Production of the crop is constrained by different diseases and the disease caused by the early blight pathogen, Alternaria solani, is among the major ones. Early blight has been considered as commonly occurring and causing a significant economic impact on the yield and quality of the crops. Major tomato diseases in general and early blight, in particular, could be best managed by integrating a number of control practices and the application of fungicides. The application of fungicides is the most convenient and predominant way for disease control in the absence of resistant varieties. The present study was conducted to evaluate the efficacy of some selected fungicides with the objectives to assess in vitro efficacy of fungicides on the growth and sensitivity of pathogens, in vitro tolerance of pathogens to fungicides, and their effectiveness as potential foliar sprays against A. solani. A. solani was isolated from tomatoes showing typical early blight symptoms. Five fungicides viz. URGI 75% WP, Carbancholar 50%, Orozole 25 EC, Agro Laxyl MZ 63.5 WP, and Mancodex Super 72 WP were tested against the pathogen using poisoned food technique. The highest percentage reduction in the growth of A. solani was recorded with Orozole 25 EC followed by Agro Laxyl MZ 63.5 WP resulting in 100% and 56.5% inhibition in mycelial growth respectively. On the other hand, Carbancholar 50% was found the least effective in reducing the mycelial growth of A. Solani. Fungicides that showed better in vitro efficacy could be further tested for their efficacies under field conditions and can be verified for economic validity. The study also showed the potential effectiveness of fungicides for the management of early blight on tomatoes.


tomato; early blight; Alternaria solani; fungicide; in vitro test and Radial growth; Ethiopia

Full Text:



Abada, K.A., Mostafa, S.H., Mervat, R., Abada, K.A., Mostafa, A.H., Mervat, R., 2008. Effect of some chemical salts on suppressing the infection by early blight disease of tomato. Egyptian Journal of Applied Science 23, 47-58.

Aggarwal, A., Mehrotra, R.S., 2003. Plant Pathology 2nd ed. Tata McGRAW Hill Publishing Company Limited, New Delhi, p. 846.

Chavan, S.S., 2007. Studies on fungal diseases of patchouli with special reference to wilt caused by Fusarium solani (Mart.) Sacc, Universoty of Agricultural Sciences, Dharwad, p. 98.

Cremlyn, R.J.W., 1991. Agrochemicals: Preparation and Mode of Actions. John Wiley & Sons, Chichester, New York, p. 296.

CSA, 2016. Statistics agency agricultural sample survey 2015/2016. Statistical Bulletin Addis Ababa, Ethiopia.

FAOSTAT, 2010. Rom United Nations Food and Agriculture Organization.

Gabrekiristos, E., Ayana, G., 2020. In vitro evaluation of some fungicides against Fusarium oxysporum the causal of wilt disease of hot pepper (Capsicum annum L.) in Ethiopia. Advances in Crop Science and Technology 8, 443-449.

Gemechis, A.O., Struik, P.C., Emana, B., 2012. Tomato production in Ethiopia: constraints and opportunities. Resilience of Agricultural Systems Against Crises. Tropentag, 19-21.

Iqbal, U., Mukhtar, T., 2020. Inhibitory effects of some fungicides against Macrophomina phaseolina causing charcoal rot. Pakistan Journal of Zoology 52, 709-715.

Irfan, Y.S., Khalid, A.N., 2007. In vitro biological controls of Fusarium oxysporum causing wilt in Capsicum annuum. Mycopathology 5, 85-88.

Lemma, D., 2002. Tomatoes. Research experience and production prospects. EARO Report, 1-53.

Majeed, A., Ahmad, H., Ali, M., Khan, H., 2014. Effect of systemic and contact fungicides on late blight disease and tuber yield of potato. Journal of Agricultural Technology 10, 209-217.

Mutschler, M., Zitter, T., Bornt, C., 2006. Tomato lines for the northeast combining early blight and late blight resistance, 22nd Annual Tomato Disease Workshop, Vegetable Program. New York.

Nawar, L.S., 2007. Pathological and rhizospherical studies on root-rot disease of squash in Saudi Arabia and its control. African Journal of Biotechnology 6, 219-226.

Nikam, P.S., Jagtap, G.P., Sontakke, P.L., 2007. Management of chickpea wilt caused by Fusarium oxysporium f. sp. ciceri. African Journal of Agricultural Research 2, 692-697.

Reinprecht, L., 2010. Fungicides for wood protection-World viewpoint and evaluation/testing in Slovakia. InTech, Rijeka, Croatia.

Sgherri, C., Kadlecová, Z., Pardossi, A., Navari-Izzo, F., Izzo, R., 2008. Irrigation with diluted seawater improves the nutritional value of cherry tomatoes. Journal of Agricultural and Food Chemistry 56, 3391-3397.

Sharma, R.K., Patel, D.R., Chaudhari, D.R., Kumar, V., Patel, M.M., 2018. Effect of some fungicides against early blight of tomato (Lycopersicon esculentum Mill.) caused by Alternaria solani (Ell. & Mart.) Jones and Grout and their impact on yield. International Journal of Current Microbiology and Applied Sciences 7, 1395-1401.

Winer, B.J., 1971. Statistical principles in experimental design. McGraw-Hill Kogakusha, Tokyo, Auckland, Bogota.

DOI: https://doi.org/10.33804/pp.006.01.4057


  • There are currently no refbacks.