Abstract
Club root is one of the most important diseases in the eastern hills of Nepal affecting the rural income as well as quantity and quality of Cauliflower production. A field experiment was conducted in Randomized Complete Block Design (RCBD) with 5 treatments and 4 replications during February to May, 2019. The experiment was conducted in the Farmer’s field in the disease prone area of Thaha municipality-4, Palung of Makwanpur district to assess the efficacy of five different treatments; Nebijin, Hatake, Trichoderma viride, Lime and control for the management or suppressing the club root disease. The effectiveness of the treatments against club root disease was evaluated along with their influence on growth parameters and yield parameters of white top variety of cauliflower. Different parameters such as disease incidence, percent disease index (PDI) or disease severity index (DSI) and percent disease control (PDI) were recorded using disease scoring scale. The treatments showed significant effect on the yield and disease parameters, but not on the vegetative parameters of cauliflower. The lowest disease incidence (50.2%) and severity index (26.8%) and the highest percent disease control (57.6%) was recorded in Nebijin. Moreover, the Marketable yield (Mtha-1) per plot was observed highest from Nebijin (48.27Mtha-1) and Trichoderma viride (47.39 Mtha-1) treatment. From the study it may concluded that the application of Nebijin was more effective for the management of clubroot disease of Cauliflower and the use of Hatake and Trichoderma virideas bio-fungicides were also giving the potential assuring measure for the controlling disease of Cauliflower.
 SAARC J. Agri., 18(1): 87-98 (2020)
Highlights
Cauliflower (Brassica oleracea var. botrytis L.) is an important winter vegetable crop successfully grown in Terai to high hills in normal to off-season in Nepal (APP, Accepted: 10.02.20201955)
Disease Incidence: The disease incidence of clubroot disease on cauliflower was found to be significantly influenced by treatments application
The highest disease incidence [77.4(91.7%)] was recorded in control which was statistically similar with lime [77.4(91.40%)] application followed by Trichoderma viride treatment [66.9(75.0%)] whereas, the least disease incidence was recorded in Hatake [47.4(54.20%)] which was statistically identical with Nebijin treatment [50.2(58.3%)]
Summary
Cauliflower (Brassica oleracea var. botrytis L.) is an important winter vegetable crop successfully grown in Terai to high hills in normal to off-season in Nepal (APP, Accepted: 10.02.20201955). In Nepal, For the first-time club root disease samples of broccoli, knolkhol, from one of the farmers of Kathmandu was received at Plant Pathology Division in 1993 (PPD, 2000) Outbreak of this disease was reported from Bhaktapur following Palung valley of Makwanpur district through the movement of seedlings. Club root disease has been an important constraint to production of Brassica vegetables as it causes of the economic losses, but more importantly because of the difficulties with the management of the pathogen. The control of disease is very difficult using the conventional methods and practices In this context, Integrated management measures could be effective for the control of club root problem. This research was conducted to evaluate the effectiveness of integrated management practices for the club root disease of cauliflower in field condition
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