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Studies on the Pest Infestations of Promising Lines in Different Locations.

Hasina Banu
Principal Scientific Officer
Entomology Department, Pest Management Division,Bangladesh Jute Research Institute,Manik Mia Avenue,Dhaka-1207.01913784774

A.S.M. Kamruzzaman
Senior Scientific Officer
Entomology Department, Pest Management Division,Bangladesh Jute Research Institute,Manik Mia Avenue,Dhaka-1207.

Md. Rafiqul Islam
Chief Scientific Officer
Pest Management Division,Bangladesh Jute Research Institute,Manik Mia Avenue,Dhaka-1207.

Abstract/ Executive Summary:

Pest status of yellow mite and apion infestation in different promising lines of jute were compared with those of recommended varieties. Two olitorius lines (O-3820 and BLG) with two check variety (O-9897 & O-795) and three promising capsularis lines (C-5003, C-5050 and C-5105) along CVL-1 check variety were grown in randomized plots (2?2.1m2) at JAES, Manikganj and Central station of BJRI. Percent infestation & intensity of yellow mite were recorded during the time of infestation. Percent apion infestation and number of bores per plant were recorded at the time of harvest from capsularis and olitorius lines.None of the lines of olitorius and capsularis was found free from yellow mite and apion infestation. Among olitorius and capsularis accessions, highest yellow mite infestation (91.67%) was recorded in accession O-3820 at Central station and lowest (6.51%) in C-5003 at JAES, Manikganj. Highest apion infestation (22.78%) was observed in the accession C-5050 at Central station and lowest (0.74%) in O-775 at JAES, Manikganj. The highest bore per plant (4.03) was recorded in C-5105 at Central station and the lowest bore per plant (1.70) in C-5003 at JAES, Manikganj.

Keywords: Jute, Promising lines, Pest infestation.

Location: Experimental plots of JAES, Manikganj and Entomology Department, Bangladesh Jute Research Institute, Dhaka.

Start Date: 01-03-2012

End Date: 31-12-2012

Program Area: Pest Management

Commodity: Jute

Objectives:

1. To study the insect reaction of some promising lines of Corchorus olitorius and C. capsularis and select the best tolerant line to develop new insect resistant variety of jute.

2. To compare pest reaction among the pipeline varieties with a standard variety in different locations.

Methodology:

The experiment was carried out at Jute Agriculture Experiment Station, Manikgang and Central Station of BJRI. during the year 2012. Two olitorius lines (O-3820 and BLG) with two check variety (O-9897 & O-795) and three promising capsularis lines (C-5003, C-5050 and C-5105) along CVL-1 check variety were grown in randomized plots (2?2.1m2). Percent infestation & intensity of yellow mite were recorded during the time of infestation. Percent apion infestation and number of bores per plant were recorded at the time of harvest from capsularis and olitorius lines. Agronomical practices and fertilizer doses were applied as per recommendation. No plant protection measures were taken till harvest to facilitate the natural pest population. Percentage of infestation, rating score and Percent damage Index (PDI) of yellow mite infested plants were recorded twice in a month during the pick period of infestation. Apion infestation (Top shoot attack) were recorded at seedling stage and bores/plant were recorded at the time of harvest and accordingly. Amount of Damage (AD) were calculated. The rating intensity of damage by yellow mite were scored following 0-5 rating scale.

Source of Information: Annual Report-2012. Bangladesh Jute Research Institute.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

Percent infestation & intensity of yellow mite were recorded during the time of infestation. Percent apion infestation and number of bores per plant were recorded at the time of harvest from capsularis and olitorius lines.None of the lines of olitorius and capsularis was found free from yellow mite and apion infestation. Among olitorius and capsularis accessions, the lowest yellow mite infestation (9.67%) was recorded in accession O-3820 at Central station and lowest ( 66.51%) in C-5003 at JAES, Manikganj. Highest apion infestation (22.78%) was observed in the accession C-5050 at Central station and lowest (0.74%) in O-795 at JAES, Manikganj. The highest bore per plant (4.03) was recorded in C-5105 at Central station and the lowest bore per plant (1.70) in C-5003 at JAES, Manikganj.

Knowledge Management: Report/Proceedings