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Management of Gummosis Disease of Citrus (2018-2019)

L. Yasmin
Fruit Research Farm of HRC, BARI, Gazipur

A. K. M. Ariful Hoque
Fruit Research Farm of HRC, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was conducted with Colombo lebu at datergaon, Shibpur, Norsingdi during 1^st week of December, 2018. The experimental was laid out randomized complete block design with three replications. Eight to ten years aged, 15 disease infected plants were selected for the experiment and one tree was considered one replication. Treatments were (i) Tricho-compost + Bordeaux paste, (ii) Tricho-compost + Bordeaux mixture, (iii) Tricho-compost + Secure, (iv) Tricho-compost + Coalter and (v) control. Tricho-compost @ 1 kg/plant was applied in root zone of the plant. All treatment ruduced the length and diameter of lesion but remarkable reduction was observed after thrice application of Tricho-compost + Bordeaux paste and Tricho-compost + Coalter treatment. The length reduced about 46.95 to 50.93% and diameter reduced about 20.56 to 26.11%, respectively in Tricho-compost + Bordeaux paste and Tricho-compost + Coalter treatment after thrice application.

Keywords: Citrus, Gummosis disease, Citrus, Tricho-compost, Coalter treatment

Location: Shibpur, Norsingdi, Bangladesh

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Citrus, Diseases

Objectives:

To develop appropriate technology for management of gummosis disease of citrus.

Methodology:

The experiment was conducted with Colombo lebu at datergaon, Shibpur, Norsingdi during 1^st week of December, 2018. The experimental design laid out RCB with three replications. Eight to ten year plants were selected for the experiment and one tree was considered one replication. Treatments were (i) T₁= Tricho-compost + Bordeaux paste [Ca(OH)₂:CuSO₄:H₂O=1:1:10]; (ii) T₂= Tricho-compost + Bordeaux mixture [Ca(OH)₂:CuSO₄:H₂O=1:1:100]; (iii) T₃= Tricho-compost +Secure; (iv) T₄= Tricho-compost + Coalter (Phenol, Polycyclic aromatic hydrocarbons); and (v) T₀= control. Tricho-compost @ 1 kg/plant was applied in root zone of the plant. Disease area was scoped with sharp knife or chiseled and removed all infected plant parts. The scoped area was treated with Bordeaux paste with covering the stem base. Secure and Bordeaux mixture was sprayed on stem after removing the infected parts. The control treatment was maintained to keep the scoped area without any organic amendment or fungicide treatments. Area (length & diameter) was measured before and after treatment application. Treatment was applied at 15 days interval thrice times. Data on diseases area were recorded 15 days interval. The data on percent disease reduction over control was computed based on the following standard formula. Reduction diseased area (%) = (Diseased areas under control - Diseased areas under any treatment ) / (Diseased areas under control) x 100.

Source of Information: Annual Research Report 2018-2019, Fruit Research Farm of HRC, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Tricho-compost + Bordeaux paste and Tricho-compost + Coalter treatments were efffective to control the disease. The funding needs to be validated with more citrus crops in disease susceptible areas.

Knowledge Management: Report/Proceedings