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Insect Abundance in Mustard in Relation to Variety and Plant Age

A. B. Khan
Department of Entomology, Bangladesh Agricultural University, Mymensingh

S. B. Huq
Department of Entomology, Bangladesh Agricultural University, Mymensingh

F. A. Talukder
Department of Entomology, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A field experiment, with 10 different varieties of mustard viz. Sonall, Tori-7, TS-72, Rai-5, Daulat, M-287, Bina-3, Sampad, Bina-1 and M 91, was conducted to study the insect pests population abundance in relation to varieties and plant age. Among the insects mustard aphid, saw fly and diamond-backed moth were found to be abundant in the compared to others. Among the tested varieties Daulat, Rai-5 and Sonali showed more resistance to aphid, diamond backed moth and saw fly, respectively.

Keywords: Insect abundance, Mustard, Plant age.

Location: Mymensingh

Start Date: 12-11-1985

End Date: 23-03-1986

Program Area: Pest Management

Commodity: Mustard

Objectives:

To find out the rate of infestation of different insects in relation to varietal differences and age of plants in the field.

Methodology:

The fluctuations of the mustard pests populations under natural conditions were studied using ten varieties of mustard namely, Sonali, Tori-7, TS-72, Rei-5, Daulat, M-287, Bina-3, Sampad, Bina-1 and M-19. The experimental lay out was in a factorial randomized block design with three replications. Four different observations on insect populations were recorded at 25 days after sowing ( 25 DAS), 35 DAS, at flowering and at pod formation stages. Insects except aphids, were counted from 10 randomly selected plants in each plot. Aphids were collected and counted from 10 cm long apical shoot of 10 randomly selected plants. The collected data were statistically computed

Source of Information: Bangladesh J. Agril. Sci. 18 (2); 215-218: 1991

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The average pest density per 10 plants on different varieties of mustard revealed that there were three main pests viz . mustard aphid, saw fly and diamond-backed moth. Among them, mustard aphids were recorded on all varieties during the entire cropping season. The diamond-backed moth was observed particularly in early stages. On the other hand, saw fly mainly appeared

Knowledge Management: Journal