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Gummosis Disease Management of Jackfruit

M. A. Rahman
Chief Scientific Officer
Plant Pathology Division, BARI, Gazipur

M. Afroz
Scientific Officer
HRC, BARI, Gazipur

Arifunnahar
Scientific Officer
Plant Pathology Division, BARI, Gazipur

Abstract/ Executive Summary:

The experiment on gummosis disease management was conducted during 2010-2011-2012 seasons at five Upazilas where 15 orchards were selected during 2010-2011. Additional 5 experiments were conducted in 2011-2012 at Ramgarh (2 orchards.) and Sripur (3 orchards) with treatments viz., i) Bordeaux paste, ii) Coal tar, iii) Bavistin (0.3%) and iv) control (only scoping of infected tissues). A damaging disease of jackfruit called gummosis caused by Phomopsis artocarpii was controlled using various treatments like application of Bordeaux paste, coaltar, Bavistin and only scoping the diseased infected points at 6 upazillas of 5 districts. Bordeaux paste and Coaltar could reduce 80-90% infection. Scoped areas also found to be recovered in course of time.

Keywords: Gummosis, Management, Jackfruit

Location: Khagrachari, Bramanbaria, Narsindi, Tangail and Gazipur

Start Date: 00-00-2010

End Date: 00-00-2012

Program Area: Pest Management

Commodity: Jackfruit

Objectives:

To control gummosis disease of jackfruit.

Methodology:

The experiment on gummosis disease management was conducted during 2010-2011-2012 seasons at five Upazilas where 15 orchards were selected during 2010-2011. Additional 5 experiments were conducted in 2011-2012 at Ramgarh (2 orchards.) and Sripur (3 orchards) with treatments viz., i) Bordeaux paste, ii) Coal tar, iii) Bavistin (0.3%) and iv) control (only scoping of infected tissues). Bordeaux paste was prepared according to the method described by Ahmed (1980). The experiment is laid out in Randomized Complete Block (RCB) design with 5 replications. Individual plant was considered as replication. The treatments were initiated preferably before and after the rainy season (March and September) and applied once more at 30 days interval after the first treatment. Different sized of infection courts from the similar aged plants were selected and infected tissues were chiseled from all plants taken under different treatments. There were at least 15 plants belong to one treatment in the present study in each location and in some cases it was 30 (Ramgarh) but 25 at Gazipur. Final data on infection court was measured after one month of second time application of the treatments. The data were analyzed using statistical package MSTATC-C.

Source of Information: Annual Report 2012-13, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It was found that all the treatments significantly reduced the area of infection loci in all locations over only scoping (control). Gummosis infected area was found to reduce 80.39% -92.31% in Bordeaux paste treated plants where the highest reduction was recorded in Sibpur, Narsingdi district followed by Sripur, Gazipur district. Effectiveness of Coal tar and Bavistin were also satisfactory to reduce gummosis infection. Disease area reduced by 79.53%-83.4% in the Coal tar treated plants. The effectiveness of Bavistion @0.3% could reduce infection area lesser than Bordeaux paste or Coal tar in the present study. Only scoping (control) could reduce infection area due to gummosis by 42.4%-48.0% of jack trees.

Knowledge Management: Report/Proceedings