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Efficacy of Mixture of Garlic, Allamanda and Neem Extract Against Shoot and Fruit Borer of Eggplant

M. Moniruzzaman
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202

M.B. Meah
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202

M.H. Rahman
Department of Entomology, Patuakhali Science and Technology University, Patuakhali

A.T.M.S. Islam
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur

M. Shahiduzzaman
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

Efficacy of garlic, allamanda, neem, garlic+neem and allamanda+neem tablets for controlling shoot and fruit borer of eggplant cv Laffa were evaluated using 1:4 (w/v) concentration at flowering and fruiting stages under field condition. Among the treatments, neem tablet at 1:4 (w/v) concentration was found effective in reducing percent shoot and fruit infestation caused by shoot and fruit borer of eggplant. For successful management of shoot and fruit borer of eggplant, spray of neem tablet may be recommended at 1:4 (w/v) concentration at flowering and fruiting stage.

Keywords: Garlic, Allamanda, Neem, Extract, Shoot and fruit borer, Eggplant.

Location: Plant Disease Diagnostics Clinic (PDDC), net house and in the Field Laboratory of the Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-01-2008

End Date: 00-03-2009

Program Area: Pest Management

Commodity: Brinjal

Objectives:

1. To determine the effectivity of mixture of garlic (Allium sativum), allamanda (Allamanda cathartica) and neem (Azadirachta indica) tablets against shoot and fruit borer of eggplant.

Methodology:

The experiment was conducted at Plant Disease Diagnostics Clinic (PDDC), net house and in the Field Laboratory of the Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh during January, 2008 to March, 2009. Eggplant variety Laffa S was used in the experiment. Seedlings were raised in plastic trays in the net house with proper care and management to ensure disease free healthy growth of seedlings. Healthy seedlings were transplanted at the age of 45 days in the field. Fifteen healthy seedlings were transplanted in each subplot of each block, maintaining distance from plant to plant 75 cm and line to line 1 meter. Recommended doses of manures and fertilizers were applied. Irrigation and weeding were done as and when necessary. Garlic bulb, allamanda and neem leaf extracts were prepared by crushing the cloves and leaves with the help of a mortar and pestle. The crushed materials were blended in an electric blender for fresh extract, added required amount of sterile water at 1:1 for solution. The blend was filtered through sterile cheesecloth. The supernatant was mixed with carrier material supplied from IPM Lab. The mixture was put into wooden pellet device, thus the tablets were prepared. Garlic (Allium sativum), allamanda (Allamanda cathartica) and neem (Azadirachta indica) tablets were prepared separately and also in combination (Garlic+Neem and Allamanda+Neem tablet). The treatments used in this experiment were T₁ (Garlic), T₂ (Allamanda), T₃ (Neem), T₄ (Garlic+Neem), T₅ (Allamanda+Neem) at the dose of 1:4 (w/v) and T₀ (Control). Rearing brinjal shoot and fruit borer : Infested fruits were collected from brinjal field and kept in plastic tray with leaves. Within two weeks pupae were found on dried leaves. Then the pupae were put in plastic container covered with net. Finally adults came out within three weeks. Preparation of garlic, allamanda, neem, garlic + neem and allamanda + neem tablet suspension and their application: Suspension of concentration 1:4 (w/v) of garlic, allamanda, neem, garlic + neem and allamanda + neem tablets were prepared separately through soaking required amount of tablets in distilled water. Seventy milliliters of tablet suspension were applied in each plant at flowering and fruiting stage. Four plants were kept untreated. Releasing brinjal shoot and fruit borer on eggplant: The eggplants were covered with mosquito net. After application of the treatments (garlic, allamanda, neem, garlic+neem and allamanda+neem in 1:4 w/v) adults were released in plot at flowering and fruiting stage of eggplant. Data collection: Data were recorded on percent shoot infestation and fruit infestation before plant tablets suspension spray, one week after 1st spray, one week after 2nd spray and one week after 3rd spray. Experiment was set following Randomized complete block design (RCBD) with four replications. Single plant was used as one treatment unit. Data were analyzed by the computer statistical package MSTAT and means were compared by DMRT.

Source of Information: J. Agrofor. Environ. 4 (1): 207-210, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that neem tablet was effective for controlling shoot and fruit borer of eggplant at 1:4 (w/v) concentration with three times spray.

Knowledge Management: Journal