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Development of Bio Rational Based Integrated Management Packages for the Major Insect Pests of Cabbage

A.K.M.Z. Rahman
Entomology Division, BARI, Gazipur

A.K.M.R.H. Ferdous
Entomology Division, BARI, Gazipur

D. Sarker
Entomology Division, BARI, Gazipur

M. Mahmudunnabi
Entomology Division, BARI, Gazipur

S. N. Alam
Entomology Division, BARI, Gazipur

Abstract/ Executive Summary:

The study was conducted in the experimental field of Entomology Division, BARl, Gazipur during 2013-14 to develop an IPM package for insect pests of cabbage grown under different planting dates. Three IPM packages along with farmers practice were evaluated in this study Cabbage planted at September were infested during the early part with leafeating caterpillars, where head infestation was 3.15-4.78% in the [PM plots. Very low infestation was observed in the November 2013 transplanting where head infestation was 1.26-1.53% in the [PM treated plots and in farmers practice it was 10.24%.

Keywords: Development, Integrated management packages, Major insect pests, Cabbage

Location: Experimental field of Entomology Division, BARl, Gazipur

Start Date: 00-09-2013

End Date: 00-04-2014

Program Area: Pest Management

Commodity: Cabbage

Objectives:

To develop an IPM package for insect pests of cabbage grown under different planting dates.

Methodology:

This study was started from September 2013 in the experimental field of Entomology Division, BARI, Gazipur and continued till February 2014. A distance of 200 mZ was maintained between the treatments plots and the untreated control plots. Cabbage was transplanted twice, 151 transplanting on 26 September 2013 and harvesting of those transplanted cabbage heads continued till 31 December 2013, 2nd transplanting on 7 November 2013, which continued till 20 February 2014. There were five treatments and three replications and the experiment was set following RCB design. The five treatments were: T₁= IPM package 1: Hand picking + release of bio-control agents; Bracon hebetor and Tricogramma chilonis + Pheromone trapping for S. litura + spraying SNPV (0.2g/1 of water); Tz= IPM package 2: Hand picking + release of bio-control agents; Bracon hebetor and Tricogramma chilonis + Pheromone trapping for S. litura + spraying Bt (OAg/l of water); T₃= IPM package 3: Hand picking + release of bio-control agents; Bracon hebetor and Tricogramma chilonis + Pheromone trapping for S. litura + spraying Spinosad 45 SC (OAml/1 of water); T₄= Farmers practices: Spraying of Cypennethrin 10 EC @ l ml/l of water at 7 days interval; Te= untreated Control. Numbers of healthy and infested heads were counted and recorded from randomly selected 2m2 area of each treatment replicates at 7 days interval. Treatment wise percent head infestation was calculated from the pooled data of twelve observations. Number common cutworm larvae were counted and recorded from ten randomly selected heads at 07 days interval.

Source of Information: Annual Research Report, Entomology Division, BARI, Gazipur, 2013-2014

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Significantly higher yields were also recorded in the treated plots than the farmers practice. Very low infestation was observed in the November 2013 transplanting, which was harvested till February 2014. The differences in infestations among various planting times happened due to variation in temperature. Average temperature was within 22.47-30.04 °c during the head formation stage of September planting while it was 18. I -23.45 °c during the head formation stage of November planting . Due to low temperature the prevalence of insect pests were very low in the November planting.

Knowledge Management: Report/Proceedings