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Abundance, Distribution and Population Dynamics of Bemisia Tabaci on Brinjal and Tomato

M. M. H. Khan*
Department of Entomology, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

I. Hossain
Department of Entomology, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

Abstract/ Executive Summary:

In order to study the abundance, distribution and population dynamics of whiteflies (Bemisia tabaci Genn) in the agriculture farm and homestead garden of Patuakhali Science and Technology University (PSTU) campus and farmer’s field, brinjal and tomato plants were selected as study materials. Results revealed that the highest number of whitefly/plant (3.43) was recorded in brinjal at farmer’s field followed by PSTU farm (1.13) while lowest was in homestaed gardem (1.00) than tomato. The highest percentage of plant damaged per plot by whitefly was recorded in brinjal (16.67%/plot) while the lowest percentage was in tomato (9.76%/plot). The highest mean percentage of B. tabaci adult was observed in the middle canopy (64%) while the lowest was in lower canopy. The highest percent plant damaged (56.25%/plot) was recorded on 2nd March while the lowest damaged (9.09%/plot) was recorded on 15th February. The similar trend was also found in case of tomato. The highest percent plant damaged (56.25%/plot) was recorded on 2nd March followed by 1st April (50%/plot) and 17 March (33.33%/plot) while the lowest damaged (9.09%/plot) was recorded on 15th February followed by 30th January (10.98%/plot).

Keywords: Brinjal, Tomato, Bemisia tabaci, Distribution, Population dynamics.

Location: Experimental farm and homestead vegetable gardens of Patuakhali Science and Technology University (PSTU) campus

Start Date: 00-11-2013

End Date: 00-04-2014

Program Area: Pest Management

Commodity: Insects, Brinjal, Tomato

Objectives:

The present study was undertaken to know the abundance, distribution and population dynamics of B. tabaci on brinjal and tomato.

Methodology:

The study was conducted in the experimental farm and homestead vegetable gardens of Patuakhali Science and Technology University (PSTU) campus, adjacent farmer’s field and entomology laboratory from November 2013 to April 2014. In order to study the abundance, distribution and population dynamics of whiteflies (B. tabaci Genn), brinjal and tomato plants were selected as study materials. The abundance of whitefly were done by counting the population of insect pests on five randomly selected plants grown in three plots of 4.5 m x 3.0 m sizes without employing any insecticidal plant protection measures. The observation of whitefly was recorded at weekly intervals during morning hours between 6:30 AM and 8:30 AM. The population of whiteflies (nymphs and adults) were recorded from three leaves one each from the upper, middle and lower position on five randomly selected plants. The population was counted only on five leaves and the whitefly population was expressed on per plant basis. The data were compiled and tabulated in proper form and were subjected to Microsoft Excell program for graphical presentation.

Source of Information: Jahangirnagar University J. Biol. Sci. 7(1): 65-71, 2018 (June)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the findings of the present research work it can be concluded that among three habitats, farmer’s field grown brinjal plants harbour more whitefly population as compared to plants grown in PSTU farm and homestead garden. The highest percent of whitefly population was distributed in middle canopy as compared to upper and lower canopies.

Knowledge Management: Journal