PREVALENCE OF DISEASES IN NAGA CHILLI AT SYLHET REGION

N Jahan, F Begum, A Muqit* and MAU Doullah
Journal of the Sylhet Agricultural University, Volume 5, Issue 2, 2018, Pages 135-140

Abstract:

Naga chilli (Capsicum chinense Jacq.) is one of the most important spice crops in the Sylhet region. The present investigation was conducted at different farmer’s field in the Sylhet region to assess the disease status and cultivated areas of Naga chilli. It is cultivated in Jaintiapur, Biswanath, Kamalgonj, Bahubal areas of greater Sylhet region.  In the present study Jaintiapur, Biswanath and Kamalgonj areas were widely investigated. Six diseases were recorded on Naga chilli. These are leaf blight, wilt, dieback, stem rot, mosaic and leaf curl. Leaf blight and wilt were most prevalent in the field. Although large variation was found in disease incidence but severity level did not show much variation. Leaf blight showed the highest incidence (19.56%) compared to other diseases like wilt (17.71%), dieback (10%), leaf curl (3.33%), mosaic (10%) and the lowest was in stem rot (1%). In the early vegetative stage the prevalent diseases were leaf blight, wilt, mosaic, dieback, leaf curl and stem rot. In the late vegetative stage and fruiting stage leaf blight, wilt, leaf curl, dieback, mosaic diseases were mostly prevalent in the field. In Jaintiapur field the prevalent diseases were leaf blight, dieback, wilt, mosaic, leaf curl and stem rot. Mosaic, dieback and leaf blight diseases were mostly prevalent in farmer’s field of Biswanath and Kamalgonj. To manage the diseases in the field farmers applied mostly Mancozeb, Sulfur fungicide, Triazole and Carbamate fungicides and sometimes they also applied micronutrient in the field to overcome diseases.

Keywords:

Naga chilli, mosaic, disease incidence, disease severity, survey


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N Jahan, F Begum, A Muqit* and MAU Doullah. 2018. PREVALENCE OF DISEASES IN NAGA CHILLI AT SYLHET REGION, Journal of the Sylhet Agricultural University 5(2): 135-140.