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Management of Tomato Yellow Leaf Curl Virus Through Netting

A. Muqit
Plant Pathology Division, BARI. Joydebpur, Gazipur-1701, Bangladesh.

M. Akanda
Department of Plant Pathology. BSMRAU. Salna, Gazipur-1706, Bangladesh.

Abstract/ Executive Summary:

Tomato seedlings were raised in the netted seedbeds before transplanting in order to study the effect of netting on the incidence of Tomato yellow leaf curl virus in the field. Two types of nets, namely, fine (40 mesh) and coarse (10 mesh) and insecticidal spray with imidacloprid @ 0.1 % were used in the experiment. Disease incidence and severity, yield and yield contributing characters were recorded. Results show that the disease incidence was reduced by 12 to 37% and yield was increased by S to 21% due to netting and pesticidal spray. Of the two types of nets, fine net (40 mesh) was more effective than coarse net (10 mesh).

Keywords: TYLCY, Netting, Imidacloprid, Tomato

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University

Start Date: 00-00-2003

End Date: 00-00-2005

Program Area: Pest Management

Commodity: Virus, Tomato

Objectives:

To assess the efficacy of growing seedlings inside insect proof net for the management of TYLCY of tomato in the field.

Methodology:

The experiment was conducted at the research farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University during winter 2003-04 and 2004-05. Twenty eight day old seedlings of the tomato variety Ratan grown under protective net were transplanted in the main field on December 2. Two types of nets were used in the trial. One was fine net (40 mesh) and the other one coarse net (10 mesh). Five treatments of the experiments were T_I = Fine net in the seed bed, T₂ = Fine net with Admire spray, T₃ = Coarse net in the seed bed, T₄ = Coarse net with Admire spray and T₅ = Control. Imidacloprid (Admire @ 0.1%) was sprayed three times at 10 days interval against the vector starting from 10 days after transplanting. The disease was identified mainly through visual observation of typical symptoms of TYLCV like upward curling, cupping, with or without marginal chlorosis, smaller leaflets and stunting of the plant. Later on it was confirmed by using commercially available TYLCV identification Kit developed by Neogcn Europe Ltd. The experiment was laid out in randomized complete block design (RCBD) with 4 replications. Irrigation, staking and other cultural practices were performed as and when necessary. Before analysis, data on disease incidence (%) were square root transformed.

Source of Information: The Agriculturists, Vol: 5, (No-1&2), pp: 1-5, Dec 2007

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present investigation demonstrated that raising of seedlings in the net protected nursery or seed bed could be an effective ecofriendly alternative for the management of TYLCY in the field. This could be used as a component of integrated disease management. However, for better result additional 3 sprays of Admire (0.1 %) is suggested.

Knowledge Management: Journal