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Using Some Ipm Packages for Suppressing Brinjal Shoot and Fruit Borer (leucinodes Orbonalis Guenee) in Kharif Season

A. Akter
M S Student
Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka- 1207.

J. Begum
Professor
Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka- 1207.

M. Ali
Professor
Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka- 1207.

M. M. Rahaman
Assistant Professor
Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka- 1207.

Abstract/ Executive Summary:

A study was conducted at the experimental farm of Sher-e-Bangla Agricultural University (SAU),. Dhaka during January to July, 2005 to evaluate the effect of six IPM Packages in suppressing brinjal shoot and fruit borer. IPM packages were: 1. Mechanical + cultural control, 2. Mechanical + cultural control + Sumi- alpha 5EC@ 1/ I mill of water at 7 days interval, 3. Furadan 5G applied at vegetative stage+ Sumi- alpha 5EC applied at 7 days interval, 4. Mechanical + cultural control, Suntap 50 WP at 7 days interval, 5. Suntap 50 WP at 7 days interval, 6. Mechanical and cultural . control + Suntap 50WP + Sumi-alpha 5EC at 5% infestation level, 7. An untreated control is needed in this study for comparison. These packages were tested on a local brinjal variety, "Khatkhatia'. Highest infestation of shoot (17%) & fruit (63% by wt. & 75% by no.) was observed in the control plot, which was significantly highest from all other treatments. The lowest shoot infestation (6.0%) and fruit infestation (36.11 %) was obtained from the plots of Mechanical and cultural control + Suntap 50WP @lg/ l & Sumi- alpha 5EC @ 1ml/ I of water, which was differed significantly from other treatments. The rate of fruit infestation due to BSFB was higher at later stages of crop growth for all the treatments.

Keywords: Intensity infestation, Brinjal, shoot and Fruit borer

Location: Sher-e-Bangla Agricultural University, Dhaka

Start Date: 01-04-2005

End Date: 31-07-2005

Program Area: Pest Management

Commodity: Brinjal

Objectives:

To evaluate some IPM package for reducing the intensity of infestation of Brinjal shoot and fruit borer during Kharif season.

Methodology:

The present study for suppressing infestation of brinjal shoot and fruit borer (Leucinodes orbonalis Guenee) in kharif season by utilizing different IPM packages was carried out at the experimental farm of Sher-e-Bangla Agricultural University (SAU), Dhaka, Bangladesh during April to July, 2005. [PM packages were: 1. Mechanical + cultural control, 2. Mechanical + cultural control + Sumi- alpha 5EC @ 1ml/ 1 of water at 7 days interval, 3. Furadan SG applied at vegetative stage+ Sumi- alpha 5EC applied at 7 days interval, 4. Mechanical + cultural control, Suntap 50 WP at 7 days interval, 5. Suntap 50 WP at 7 days interval, 6. Mechanical and cultural control + Suntap 50 WP + Sumi- alpha 5EC at S% infestation level, 7. An untreated. The experimental site is situated in the sub- tropical climatic zone characterized by heavy rainfall during the month from April to July during study and scattered rainfall during the rest of the year. Monthly maximum and minimum temperature, relative humidity and total rainfall recorded during the period of present study at the SAU experimental farm. The experiments consist of six IPM packages and an untreated control was laid out in a 'Randomized Complete Block Design (RCBD) having 3 replications. The soil of the experimental field was well prepared by ploughing, harrowing and followed by cross ploughing and leveling. The whole field was divided into 3 blocks of equal size and each block was sub- divided into 7 plots (2 m X 1.5m). Nine brinjal (variety: "Khatkhatia") seedlings of 40 days old (3/4 leaf stage) were planted on 10 February, 005 in each plot at a distance of 75 cm between lines and 50 cm between plants. A total of 189 seedlings were transplanted in 21 plots. Cowdung and other chemical fertilizers were applied as recommended by Rashid (1999) for brinjal cultivation @ 15 tons of cowdung and 250, 150 and 125 kg of Urea, TSP and MP, respectively per hectare. The half of cowdung and TSP were applied as basal dose during land preparation. The remaining cowdung, TSP and, one- third of MP were applied in the pits at transplantation of brinjal seedlings. The entire dose of urea and the rest of MP were applied as top dressing. The data were analyzed statistically for each parameter like mean shoot and fruit infestation (%), Mean (by number and weight) healthy and infested yield etc. The analysis of variance (ANOVA) of different parameters was performed and the means were separated by using Duncan's Multiple Range Test (DMRT). Before statistical analysis, the data were transformed was done where appropriate using square root transformation procedure for the accuracy of results. Data were analyzed by MSTAT - C software.

Source of Information: JOURNAL OF SHER-E-BANGLA AGRICULTURAL UNIVERSITY, Vol. 01 (1), July 2007, pp. 14-22.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of comparative effectiveness of six IPM packages including an treated control in suppressing the infestation of brinjal shoot and fruit borer (BSFB) was evaluated and their suitability as IPM packages was assessed. The results revealed that the lowest shoot infestation (6.0%) was obtained from plots having IPM package 6 consisting of Mechanical and cultural control + Suntap 50 WP @ 1 g/I & Sumi- alpha 5EC @ 1ml/ l of water, which differed significantly from all other packages. The second lowest shoot infestation (8.0%) was obtained from plots utilizing IPM package 5 comprising mechanical and cultural control + Suntap 50WP @ 2g/1 of water at 7 days interval. At followed by IPM package 4 (9.0%), and IPM packages 3 (10.0%) and they were not significantly differences from each other. The percent shoot infestation reduction over control was highest (64.71%) in plots of IPM package 6 followed by IPM package 5 (52.94%), and IPM package 4 (47.05%). For other treatments, this reduction was 47.06% for [PM package 3, 29.41 % for IPM package 2 and 17.65% for IPM package I. Results revealed that the mechanical or cultural method supplemented with insecticidal application might increase the percent shoot infestation reduction over the untreated control. Thus the decreased rate of shoot infestation might be ensured by utilizing IPM package 5 consisting of mechanical +cultural control + Suntap 50WP @ 2g/ l. On the other hand IPM package 2 consisting of mechanical +cultural control + Sumi- alpha 5EC @ 1ml/ l might be chosen as the second line of defense. Percent results revealed the lower infestation in late fruiting stage than early and mid fruiting stages. Considering shoot and fruit infestation, IPM package 6 and IPM package 3 provided better results than other packages. Present results clearly revealed that chemical measures incorporated with non- chemical tools (i.e. cultural or mechanical method) might provide better performance to reduce the fruit infestation in brinjal.

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