Assay Of Fungicides And Bioagents To Ascertain The Variability Among Isolates Ofcolletotrichum Capsici Inciting Of Chilli Fruit Rot

Rajappa Vithal; Mina D Koche; Aparna Tekade; R B  Kothikar

doi:10.48165/

Authors

Rajappa Vithal Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra
Mina D Koche Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra
Aparna Tekade Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra
R B Kothikar Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra

DOI:

https://doi.org/10.48165/

Keywords:

Colletotrichum, capsici, Fungicides, Bioagents, Chilli

Abstract

Ten isolates of Colletotrichum capsici collected from different regions of Vidarbha, Marathwada (Maharashtra), Bidar district (Karnataka) and Guntur district (Andra Pradesh) showing varied type of pathogenic ability against chilli variety Jayanti and designated as strongly, moderately and weakly pathogenic on the basis of per cent disease intensity. Sensitivity of fungicides against different isolates considered for assessment of variation as well as for management. Isolate Cc1 was highly sensitive to ridomil MZ and tricyclazole + mancozeb, while ridomil MZ, propiconazole, mancozeb and tricyclazole + mancozeb against Cc2, and propiconazole and tricyclazole + mancozeb to Cc3, whereas tricyclazole + mancozeb was inhibitory to Cc4 and Cc5. Tridemorph was showing cent per cent inhibition of Cc6 and propiconazole against Cc7, Cc8 and Cc10, while in Cc9 tridemorph, propiconazole and a combination of carbendazim + mancozeb were shown cent per cent inhibition. These observations reflect in the existence of variation among the isolates. However, the same fungicides exhibited inhibitory effect on spore germination of C. capsici isolates. A combination of tricyclazole + mancozeb @ 0.2 per cent and propiconazole @ 0.1 per cent showed cent per cent spore inhibition effect along with other chemicals against all the ten isolates of C. capsici. Among the bioagents Trichoderma harzianum was found to be significant in inhibiting the mycelial growth of Cc1, Cc2, Cc3, Cc5, Cc6, Cc8 and Cc10 isolates of C. capsici, while T. viride inhibit the growth of Cc4, Cc7 and Cc9, whereas Pseudomonas fluorescens was found to be moderate in reducing the growth of all the isolates of C. capsici.

References

American Phytopathological Society. 1943: Committee on standardization of fungicidal test and definition of fungicide terms. Phytopath, 33: 624-626.

Akhtar, J. and M.K. Singh. 2007: Studies on the variability in Colletotrichum capsici causing chilli anthracnose. Indian Phytopath, 60(1): 63-67.

Anonymous. 2016: Agricultural statistics at a glance. Directorate of Economics and statistics, India. Beynon, S.M., A.L. Coddingston., B.G. Lewis and V. Vorzea. 1995: Genetic variation in the coffee berry disease pathogen Colletotrichum kahawae. Physiological & Molecular. Plant Pathology. 46 (6): 457-470.

Dean, R., J.A.L., Van, Z.A. Pretorious., K.E. Hammond Kosack and A. Di Pietro, 2012: The top 10 fungal pathogens in molecular plant pathology. Molecular Plant Pathology, 13: 414-430.

Kavi Bharathi, N., N. Revathy, E.G. Ebenezar and R.P. Gnanamalar. 2019: In vitro Antagonistic Activity of Fungal and Bacterialbio Control Agents against Chilli Fruit Rot Incited by Colletotrichum capsici. Int. J. Curr. Microbiol .App. Sci., 8(5): 190-198.

Linu, M.S., and M.S. Jisha. 2017: In vitro control of Colletotrichum capsici induced chilli anthracnose by fungicides and bio-control agent. Int. J. of App. and Pure Sci. and Agriculture. 3(5): 27-33.

Mc Kinney. 1923: A new system of grading plant diseases. J. Agriculture Res. 26: 196-217.

Mistry, D.S., I.P. Sharma and S.T. Patel. 2008; Evaluation of fungicides, phytoextracts and bio-pesticides against dieback of chilli. J. Pl. Dis. Sci, 3 (1): 53-55.

Muthu kumar A and R. Bhaskaran. 2007; Tactics to manage disease problems in chilli. Spice India, 24- 27.

Palarpawar, M.Y. and V.R. Ghurde. 1994: Variability in Colletotrichum curcumae the incitant of leaf spot of turmeric in Vidarbha. Indian Phytopath, 47(2):207- 210.

Preeti Dubey, R. Chandra and P. Gupta, 2019: Effect of different fungicides against Colletotrichum capsici caused chilli anthracnose disease. The Pharma Innovation J. 8(2): 414-416.

Salma Begum and P.S. Nath. 2015: Ecofriendly management of anthracnose of chilli caused by Colletotrichum capsici. J Appl. and Nat. Sci. 7 (1):119-123.

Sawle, L., 2016: Studies on the anthracnose of chilli incited by Colletotrichum capsici (Sydow) Butl. and Bis. M.Sc. Thesis, Department of Plant Pathology, Rajmata Vijayaraje ScindiaKrishi Vishwa Vidyalaya, Gwalior (M.P.)

Shravelle, V.G. 1961: The nature and use of modern fungicides. Burges Publication Company, Minneosota, USA. pp. 308.

Thind, T.S. and J.S. Jhooty. 1990: Studies on variability of two Colletotrichum spp. causing anthracnose and fruit rot of chillies in Punjab. Indian Phytopath, 43: 53- 58.

Vani M. and Y. M. Somashekhara. 2018: In vitro study of biocontrol Agents, fungicides and botanicals against Colletotrichum capsici causing anthracnose of capsicum (Capsicum annuumm L.). Int. J. Pure App. Biosci, 6 (5): 51-56.

Venkataravanappa, V., V.B. Nargund., M. K. Prasanna Kumar., C.N. Laxminarayana Reddy and M. P. Basavarajappa. 2006: Efficacy of different fungicides and botanicals against Colletotrichum gloeosporioides a incitant of mango anthracnose. J. Pl. Dis. Sci, 1 (2): 200-202.

Vincent, J.M. 1947: Distortion of fungal hyphae in presence of certain inhibitors. Nature, 159:239-241.