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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 2
First page : (629) Last page : (635)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7631

Survey and Screening of Tomato Varieties against Early Blight (Alternaria solani) Under Field Condition

T.  Ramesh Kumar* and Praveen Kumar M.
Department of Plant Pathology, Birsa Agricultural University, Ranchi-6, Jharkhand
*Corresponding Author E-mail: rameshkumartheerdhala@gmail.com
Received: 11.03.2019 | Revised: 17.04.2019 | Accepted: 26.04.2019  

 ABSTRACT

Tomato production in India and elsewhere is under constant threat of the A. solani that causes early blight disease. Disease surveys were conducted in seven villages (Kanke, Boriya, Pithoria, Chutia, Nagari, Mandar and Thakurgaon) of different blocks of Ranchi district (Jharkhand) during the Rabi season, 2013-14 to record the incidence of early blight of tomato caused by Alternaria solani. Early blight of tomato was prevalent in all the areas surveyed the disease severity in leaf and stem varied from 12.0 to 34.6% and 14.2 to 26.6 per cent  respectively  depending on localities, however, highest disease intensity in leaf was recorded at Nagari being 34.6% and disease intensity of 26.6% in stem. Which was followed by Pithoria which recorded  PDI of 32.6% in leaf and 21.2% in stem. All the entries disease observations were recorded under natural epiphytotic condition. However, reactions varied with the cultivars. The mean disease intensity ranged from 16.0 to 40.7%. whereas eight varieties namely Pusa rohini, BT 12, Arka meghali, Pusa uphar, Swarn samridhi, Swarn lalima, Arka abha and Pusa rubi  showed moderately susceptible (MS) reactions. The cultivars, Swarn baibhav, BT10 and S-22 showed susceptible reaction (S) against early blight disease. Two varieties i.e., Arka vikas and Swarn sampada were found moderately resistant reaction (MR) against early blight. The cultivars, Swarn sampada recorded highest yield 233.6 q/ha. Which is at par with cultivar Arka meghali (213.5 q/ha). The next higher yielder in order to superiority were Arka vikas (210.6 q/ha), Swarn lalima (206.4 q/ha), Swarn samridhi (202.6 q/ha) etc.

Key words: Lycopersicon esculentum, Survey, Varietal screening, early blight, Yield, Alternaria solani.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article:  Ramesh, K.T. and Praveen, K.M., Survey and Screening of Tomato Varieties against Early Blight (Alternaria solani) Under Field Condition, Int. J. Pure App. Biosci. 7(2): 629-635 (2019). doi: http://dx.doi.org/10.18782/2320-7051.7631