Bio-efficacy of new fungicide, Tebuconazole- 430SC against coffee leaf rust disease, Hemileia vastatrix Berk and Broome
Keywords:Coffea Arabica, disease, fungicide, Hemileia vastatrix, leaf rust, management
Coffee is an important plantation crop cultivated worldwide and used as stimulating drink. Coffee leaf rust (CLR) disease is one of the devastating disease affecting foliage of Coffee, limiting Coffee production worldwide. It is caused by an obligate parasite Hemileia vastatrix, which reduce photosynthetic area in turn results in heavy defoliation and die-back of branches. In India CLR management is accomplished with one contact fungicide spray (Bordeaux mixture @ 0.5%) and effective systemic fungicide spray during pre and post monsoon periods respectively. However, to find an alternative to the recommended fungicide the studies were conducted to know the efficacy of new fungicide Tebuconazole 430 SC against CLR. The results revealed that, in the laboratory conditions, complete inhibition of the uredospore germination was observed in Tebuconazole 430 SC @ 0.5 ml/L and 0.75 ml/L and Hexaconazole 5 EC @ 2 ml/L. However, in lower concentration Tebuconazole 430 SC @0.25 ml/L there was 98.97 per cent inhibition and in Copper Oxychloride 50 WP @ 5.5 g/L 87.49 per cent inhibition was observed over control. Field trials indicated that, at all the locations, Tebuconazole 430SC @ 0.75ml/L was found very effective which recorded maximum disease reduction followed by Tebuconazole 430SC @ 0.5ml/L which was found on-par with the currently recommended fungicide Hexaconazole 5 EC @ 2 ml/L and minimum disease reduction was observed in Copper oxychloride 50 WP @ 5.5g/L.
Daivasikamani S, Ranjini AP & Raghuramulu Y. 2016. Diseases of Coffee and their management. In P. C. Trivedi (Ed), Plant Pathogens and their management. (pp 19-50) Avaishkar Publishers, Distributors, Jaipur, Rajasthan, India.
Daivasikamani S, Rajanaika, Kiran Kumar KC, Shyam Singh, Vinod Kumar PK, Sudhakar Bhat S & Jayarama. 2012. Comparative efficacy of plant products on the spore germination and disease incidence of coffee leaf rust pathogen. Acta Biologica Indica, 1(1): 69-75
Daivasikamani S & Govindarajan TS. 1989. Field efficacy of a new systemic fungicide pp 523 5 percent SC Hexaconazole for the control of coffee leaf rust. J. Cof. Res, 19(2): 65-70.
Honorato Junior J, Zambolim L, Aucique-Perez CE, Resende RS & Rodrigues FA. 2015. Photosynthetic and antioxidative alterations in coffee leaves caused by epoxiconazole and pyraclostrobin sprays and Hemileia vastatrix infection. Pestic. Biochem. Phys, 23 : 31-39.
Kushalappa AC & Eskes AB. 1989. Coffee rust: epidemiology, resistance, and management. CRC Press, Florida. pp:1-345.
Narayana MR. 2017. Management of coffee leaf rust disease in India: evidence for channels of communication. J. Appl. Commun. 97(3): 1-14
Nithi Thaisantad, Prasert Kam-on & Chiang Mai. 2004. Efficacy of certain fungicides on coffee leaf rust (Hemileia vastatrix Berk. & Br.). Agris, 12:70-81.
Oliver R & Hewitt HG. 2014. Fungicide Performance. Fungicides in crop protection. CABI, USA. pp 1-190
Patil CU, Zape AS & Wathore SD. 2009. Efficacy of fungicides and bioagents against Colletotrichum gloeosporioides causing blight in Piper longum. Int. J. Plant Prot, 2(1): 63-66.
Rayner RW. 1961. Germination and penetration studies on coffee leaf rust (Hemileia vastatrix B. & Br.). Ann. of Appl. Bio., 49:497-505.
Silva Acuna R, Zambolim L & Alvarez Venegas VH. 2003. Control strategies for coffee leaf rust applying protective and systemic fungicides in Patrocinio, Minas Gerais, Brazil. Agronomia Tropical Maracay, 53(4): 457-481
Shivaprasad M, Ramya TS, Vinay JU, Swamy AV, Ravi CS, Rashmi C, Patil S & Shilpa M. 2021. Bio-efficacy of new fungicide Pyraclostrobin133g/L + Epoxiconazole 50g/L SE against coffee leaf rust disease in hill zone of Karnataka. Inter. J. Chem. Stud. 9(1): 639-642.
Santoshreddy Machenahalli, Sudha M, Madhu S Giri, Ranjini AP, Soundararajan S, Daivasikamani S & Raghuramulu Y. 2019. Efficacy of a new fungicide Fluxapyroxad + Pyraclostrobin 500 SC against Coffee Leaf rust disease J. Mycopathol. Res., 57(2): 101-105.
Sudhakar SB, Kiran Kumar KC, Daivasikamani S, Hanumanta BT, Prakash NS & Jayrama. 2014. Diseases of coffee. In: Diseases of Plantation crops (Eds.) Chowdappa P, Sharma P, Anandaraj M. and Khetrapal RK, Indian Phytopathological Society, New Delhi pp.55-109.
Wellman FL. 1961. Coffee: Botany, cultivation and utilization. Leonard Hill (Books) Limited. Inter Science Publishers Inc. New York. 488 p.
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