Influence of Weather Parameters on Foliar Diseases of Sesame (Sesamum indicum L.) in Coastal Ecosystem of West Bengal, India

Main Article Content

Nayan Kishor Adhikary
Krishnendu Roy
Kajal Kumar Biswas


Sesame is one of the most important oilseed crops in India due to mainly its high quality seed oil and antioxidant properties. Occurrence of foliar diseases, like Alternaria leaf spot and Cercospora leaf spot has become a major constraint in recent years for successful and profitable cultivation of sesame. Field experiments were conducted with sesame var. savitri in a factorial randomized block design with three different dates of sowing with 15 days interval and two different plant protection situations (Protected i.e., treated with disease control protocols and unprotected i.e., control), replicated four times, during two consecutive summer seasons of 2018 and 2019 at Agricultural Experimental Farm, Institute of Agricultural Science, University of Calcutta, Baruipur, South 24 Parganas. The diseases incidence was estimated and correlated with the weather parameters. The average of weather parameters viz., maximum temperature, minimum temperature, relative humidity (morning), relative humidity (evening) and rainfall prior to seven days of disease appearance were considered for study the correlation between the weather factors and the disease. In 2018, disease incidences of the plants shown at third date of sowing (26th April, 2018) in both the protected and unprotected plots had significant (P=.05) but negative correlation with maximum temperature. For plants sown at first date of sowing (27th March, 2018) in 2018 had disease incidences significantly (P=.05) and positively correlated with minimum temperature. However, in 2019, except for the relation between disease incidences in the unprotected plots and maximum temperature, all other disease-temperature correlations were non-significant. Disease incidences were positively and significantly correlated with relative humidity (both morning and evening) in all dates of sowing irrespective of experimental years, except with morning relative humidity at first date of sowing in first year. Total rainfall was positively and significantly correlated with disease incidences at all dates of sowing in 2018; however, such relation was non-significant in 2019. 

Alternaria, cercospora, correlation, sesame, weather

Article Details

How to Cite
Adhikary, N. K., Roy, K., & Biswas, K. K. (2020). Influence of Weather Parameters on Foliar Diseases of Sesame (Sesamum indicum L.) in Coastal Ecosystem of West Bengal, India. International Journal of Environment and Climate Change, 10(9), 83-88.
Original Research Article


Ranganatha ARG, Lokesha R, Tripnthi A, Asafa T, Paroha S, Srivastava MK. Sesame improvement-present status and future strategies. J Oilseeds Res. 2012; 29(1):1-26.

Bedigian, DIs še-giš-i sesame or flax. Bull. Sumerian Agric. 1985;2:159-178.

Moazzami A. Sesame seed lignans. Ph.D. Thesis. Department of Food Science, SLU Acta University Agricultural Scientiae; 2006.

El-Bramway, Mahesh. Genetic analysis of yield component and disease resistance in sesame (Sesame indicum L.) using two progenies of diallel crosses. Res J Agr. 2010;43:44-56.

Jha GK, Pal S, Mathur VC, Bisaria G, Dubey SK. Edible oilseed supply and demands scenario in India: Implication of policy, Div. Agric. Economics, IARI, New Delhi; 2014.

Kumar S, Goel PD. A great ancient oilseed sesamum. Farmers and Parliament. 1994; 12:6-7.

Maiti S., Raoof MA, Sastry KS, Yadava TP. A review of sesamum diseases in India. Trop. Pest Manag. 1985;31(4):317- 323.

Barboza CN, Mazzani B. Malaguti G. Effect of leaf spots caused by Cercospora sesami and Alternaria species on the yield of 10 sesame varieties. Rev Appl Mycol. 1966;47:258.

Gibbons RW. In Advances in Legume Science (Summerfield RJ. Bunting, AH. eds.). Royal Botanic Gardens. Kew. 1980; 483-493.

Shane WW, Teng PS. Impact of Cercospora leaf spot on root weight, sugar yield and purity of Beta vulgaris. Plant Dis. 1992;76:812-820.

Sangeetha CG, Siddaramaiah AL. Epidemiological studies of white rust, downy mildew and Alternaria blight of Indian mustard (Brassica juncea L.). Afr J Agric Res. 2007;2(7):305-308.

Ojiambo PS, Narla RD, Ayiecho, PO, Nyabundi JO. Effect of infection level of sesame (Sesamum indicum L.) seed by Alternaria sesami on severity of Alternaria leaf spot. Trop Agr Res Ext. 1998;1(2):125-130.

Shanta P. Studies on Cercospora leaf spot of groundnuts, effect of the environmental factors on disease incidence and survival of the pathogen. J Madras Univ. 1960;30: 179-185.

Swamy KM. Epidemiology and management of leaf spot of chilli (Capsicum annuum L.) caused by Cercospora capsici HEALD and WOLF. M. Sc. (Agri) Thesis, Univ. Agric. Sci. Raichur, Karnataka (India); 2010.