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Development of Ipm Packages for Insect Pests of Tomato

S. N. Alam
Chief Scientific Officer
Entomology Division, BARI, Gazipur

N. K. Dutta
Senior Scientific Officer
Entomology Division, BARI, Gazipur

M. Mahmudunnabi
Scientific Officer
Entomology Division, BARI, Gazipur

M. A. Rahman
Principal Scientific Officer
Plant Pathology Section, HRC, BARI, Gazipur

Abstract/ Executive Summary:

Studies were undertaken at research field of BARI, Gazipur to evaluate the IPM package comprised of virus resistant germplasm, hand picking and innundative release of parasitoids to control leaf curl virus, whitefly and fruit borer of tomato during 2009-10 and 2010-11 cropping seasons. During both years, percent borer infestation in the IPM plots was significantly lower than the sprayed plots. Virus infested plants in the IPM plots during 2009-10 was 28.76% and during 2010-11, 32.1%, whereas it was 74.3% in the non-IPM plots during 2009-10 and 83.5% during 2010-11. However, during initial crop stage virus infection was very less in the TLB 182 than BARI tomato 2. The Number of whitefly/leaf was also significantly lower in the IPM plots than the non-IPM plots. The yields of healthy tomato in the IPM plots were also significantly higher (2.6 times during 2009-10 and 2.1 times during 2010-11) than the non-IPM plots.

Keywords: IPM package, tomato, insects, virus diseases, germplasms

Location: Gazipur

Start Date: 12-10-2010

End Date: 30-01-2011

Program Area: Pest Management

Commodity: Tomato

Objectives:

To evaluate the IPM package comprised of virus resistant germplasm, hand picking and inundative release of parasitoids to control leaf curl virus, whitefly and fruit borer of tomato

Methodology:

This study was started from November 2009 in the research field of BARI, Gazipur for 2009-10 cropping season and from November 2010 for 2010-11 cropping season. The unit plot size was 15x15m and a distance of 200 m2 was maintained between the IPM and Non-IPM plots. There were three dispersed replications and the experiment was set following RCB design. There were two treatments: 1) IPM trials comprising of transplanting of ToLCV and whitefly resistant line TLB 182, hand picking of infested fruits, weekly release of egg parasitoid, Tricogramma evanescens (@ 1 gm parasitised eggs/ha/week) and larval parasitoid Bracon hebetor (800-1000 adult /ha/week) & Use of Helicoverpa pheromone trap (at 10 m² distance), 2) Farmers’ practice – transplanting of BARI tomato 2 and spraying of synthetic pyrethroid insecticide (Cymbush 10 EC @ 1 ml per liter of water) at every three days interval. Data were recorded on disease incidence (% virus infected plants), where the numbers of total and infected plants per plot were counted at weekly interval and % virus infected plants were calculated later on. The number of whitefly was counted from 10 randomly selected plants (five leaves/plant) per treatment replications. Number of healthy and borer-infested fruits were counted and recorded during each harvest. Percent fruit infestations due to borer attack were calculated.

Source of Information: Annual Report 2010-2011, Entomology Division, BARI , Gazipur

Article Link (Online Journal):

Funding Source:

1.	Budget: 50,000.00

Total Budget (Tk.) : 50,000.00

Achievement/Findings:

During both years, percent borer infestation in the IPM plots was significantly lower than the sprayed plots. Virus infested plants in the IPM plots during 2009-10 was 28.76% and during 2010-11, 32.1%, whereas it was 74.3% in the non-IPM plots during 2009-10 and 83.5% during 2010-11. However, during initial crop stage virus infection was very less in the TLB 182 than BARI tomato 2. The Number of whitefly/leaf was also significantly lower in the IPM plots than the non-IPM plots. The yields of healthy tomato in the IPM plots were also significantly higher (2.6 times during 2009-10 and 2.1 times during 2010-11) than the non-IPM plots.

Knowledge Management: Report/Proceedings