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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(7): 2756-2765
DOI: https://doi.org/10.20546/ijcmas.2020.907.325


Environmental Challenges on Leaf Spot and Blight of Sunflower (Helianthus annuus L.)
Ranjan Kumar Jena1, Nimai Charan Swain1, Shubhendu Kumar Behera1, Nitish Kumar Jena2*, Manasranjan Rout1, Debadatta Bibhudendra Pratap1, Angshuman Mohapatra3 and Bitish Kumar Nayak3
1Deparment of Plant Pathology,
2Deparment of Horticulture,
3Deparment of Soil science, Institute of Agricultural Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
*Corresponding author
Abstract:

Sunflower is an important major oilseed crop ranks next to groundnut and soybean at global level. It belongs to the family Asteraceae and mostly infected by several fungal, bacterial and viral diseases among which leaf spot and blight caused by Alternaria helianthi was considered as one of the most destructive diseases in the sunflower growing areas. An experiment was studied to determine the disease incidence and intensity of the disease in both Kharif and Rabi season (2018-19) by observing the plant raised in field. Attempt was made to evaluate the effect of different range of pH and temperature on growth of the fungus and calculated under field condition in both Kharif and Rabi season. The results obtained from the present investigation indicate that the incidence of the disease and its intensity was found more during Rabi season than in Kharif under field condition which may be attributed to suitable environment and favourable soil conditions. Maximum dry weight growth of the fungus was observed at pH 6.0 followed by pH 5.0 and temperature at 300C-350C. The above parameters should be considered while growing sunflower in field condition along with other protection measures to grow disease free sunflower crop with maximum yield and good quality seed.


Keywords: Symptomatology, Defoliation, Alternaria helianthi, pH, Temperature, Kharif season, Rabi season
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How to cite this article:

Ranjan Kumar Jena, Nimai Charan Swain, Shubhendu Kumar Behera, Nitish kumar Jena, Manasranjan Rout, Debadatta Bibhudendra Pratap, Angshuman Mohapatra and Bitish Kumar Nayak. 2020. Environmental Challenges on Leaf Spot and Blight of Sunflower (Helianthus annuus L.).Int.J.Curr.Microbiol.App.Sci. 9(7): 2756-2765. doi: https://doi.org/10.20546/ijcmas.2020.907.325