Agricultural Science Digest

  • Chief EditorArvind kumar

  • Print ISSN 0253-150X

  • Online ISSN 0976-0547

  • NAAS Rating 4.75

  • SJR 0.156

Frequency :
Bi-monthly (February, April, June, August, October and December)
Indexing Services :
BIOSIS Preview, Biological Abstracts, Elsevier (Scopus and Embase), AGRICOLA, Google Scholar, CrossRef, CAB Abstracting Journals, Chemical Abstracts, Indian Science Abstracts, EBSCO Indexing Services, Index Copernicus
Submit

Full Research Article

Agricultural Science Digest, volume 42 issue 4 (august 2022) : 464-467

Screening of Tuberose Cultivars against Leaf Spot (Alternaria polyanthi) and its Management

N. Mazumder, S.K. Borah, K.K. Deka
1Horticultural Research Station, Assam Agricultural University, Kahikuchi, Azara, Guwahati-781 017, Assam, India.
Cite article:- Mazumder N., Borah S.K., Deka K.K. (2022). Screening of Tuberose Cultivars against Leaf Spot (Alternaria polyanthi) and its Management. Agricultural Science Digest. 42(4): 464-467. doi: 10.18805/ag.D-5289.

ABSTRACT

Background: Tuberose flower has been found to be affected by various fungal and viral diseases which affect growth and cause loss in flower yield. Among them, leaf spot incited by Aternaria polianthi is an important fungal disease in tuberose. The incidence of the disease is common in the both single and double-type tuberose varieties due to prevalence of high rainfall and humid conditions. During survey it was found that the disease incidence was increasing gradually causing economic losses in Assam.
Methods: The field trial was carried out during kharif seasons (2015 -18) to test the efficacy of six fungicides against leaf spot of tuberose (Var. Local single petal) caused by Alternaria polyantha. Four sprays with fungicides at an interval of seven days starting from the first appearance of the disease symptom were done. Per cent disease incidence (%) with growth parameters were recorded one week after the last spray. Another field experiment for screening the resistant genotypes was conducted using 11 tuberose genotypes during kharif seasons (2016-17 and 2017-18).
Result: Eleven tuberose cultivars (Bidhan Ranjani-1, Bidhan Ranjani-2, Arka Nirantara, GK-TC-4, Prajwal, Phule Rajani, Local Single, Local Double, Vaibhav, Suhashini and Shringer) were screened against leaf spot caused by A.polyanthi under natural field condition. None of the cultivars were found to be immune or resistant, while three cultivars viz., GK-TC-4, Bidhan Rajani-1 and Arka Nirantara showed moderate resistant reaction with recorded per cent disease incidence of 16.11, 18.17 and 18.71, respectively. Spraying with azoxystrobin, difenoconazole and a combo fungicide consisting of iprodione (25%) + carbendazim (25%), at 0.1% recorded lowest per cent disease incidence of 7.91, 9.83 and 11.85% compared to control (33.62 PDI) with per cent disease reduction of 70.59%, 64.61% and 76.31%, respectively.

REFERENCES


  1. Anonymous (2004). Progress Report, AICRP (Floriculture), Directorate of Floricultural Research, ICAR, New Delhi-12, 2004-05, pp xiii.

  2. Anonymous (2012). Progress Report, AICRP (Floriculture), Directorate of Floricultural Research, ICAR, New Delhi-12, 2011-12, pp xii.

  3. Biswas, B., Naveen Kumar, P. and Bhattacharjee, S.K. (2002). In: Tuberose, AICRP on Floriculture, Tech Bull No. 21, iii pp.

  4. Horsfall, J.G. and Henberger, J.W. (1942). Measuring magnitude of a defoliation diseases of tomato. Phytopathology. 32:  226-232.

  5. Hugar, S.V., Hosamoni, V., Pradeep, S. and Hanumanthasway, B.C. (2009-10). Evaluation of new chemical molecules for the management of Scirpophagus incertulus Walker in aerobic rice. Int. J. Pl. Protn. 2: 205-208.

  6. Khan, M.R. and Pal, A.K. (2001). Plant parasitic nematode associated with Tuberose (Polianthes tuberosa L.) in West Bengal.  Ann. Pl. Prot. Sci. 9: 304-306. 

  7. Mariappan, V., Babu, K. and Kandasamy, T.K. (1977). A leaf spot disease of tuberose (Polianthes tuberose L.) caused by new species of Alternaria. Curr. Sci. 46(9): 311. 

  8. Mazumder, N., Bora, S.K. and Hatibarua, P. (2016). Management of leaf spot (Alternaria Polianthi) of tuberose through fungicides. Agril. Sci. Digest. 36(3): 250-252.

  9. Mishra, A., Tiwary, A.K. and Sharma, J.P. (2008). Effect of bio-control agent and chemicals on root rot and yield attributes in tuberose (Polianthes tubarosa Linn.) cultivars Calcutta Double. J. Ornamental Hort. 11(1): 41-44.

  10. Muthukumar, A., Bhaskaran, R., Eswaran, A. and Kumar, M. Raj (2007). Studies on biochemical properties of healthy and leaf spot infected tuberose plants. Ind. J. Hort. 46(2): 190-193.

  11. Naga Lakshmi, T., Madhumati, C, Nagaraju, R and Sreedhar, D. (2018). Screening of tuberose cultivars and effect of fungicides against tuberose leaf spot caused by Alternaria polianthi. Int. J. Pure. App. Biosci. 6(2): 232-237.

  12. Panja, B.N., De, A., Mandal, M. and Saha, J. (2016). First report on leaf tip blight disease of tuberose (Polyanthes tuberosa L.) caused by new Phoma sp., Phoma mondouriensis from West Bengal. J. Mycopathological Res. 54(1): 171- 174.

  13. Pathak, D.P., Singh, A.A., Despandey, A. and Sridhar, T.T. (1986). Sources of resistance to purple blotch in onion. Vegetable Sci. 13(2): 300-303.

  14. Prasad, Y. and Naik, M.K. (2003). Evaluation of genotypes, fungicides and plant extracts against early blight of tomato caused by Alternaria solani. Ind. J. Pl. Prot. 31(2): 49-53.

  15. Robak, J. (1998). Recent advance at integrated protection of cabbages against diseases with attention to club root (Plasmodiophora brassicae), Alternaria leaf spot (Alternaria spp.) and grey mold (Botrytis cinerea). Progress-in-Plant- Protection. 38(1): 119-123.

  16. Sharma, P. and Bhattacharjee, S.K. (2002). Plant protection in ornamental crops. AICRP on Floriculture, ICAR, New Delhi-12, Technical Bulletin No.19, 64 pp. 

  17. Singh, P.C. and Singh, D. (2006). In vitro evaluation of fungicides against Alternaria alternata. Ann. Pl. Protec. Sci. 14(2): 500-502.

  18. Snedecor, W.G. and Cochran, W.G. (1967). Statistical Methods. The Iowa State University Press, Ames, Iowa, 593 pp.
In this Article
    Contact us
    Follow us

    Editorial Board

    View all (0)