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Control of Rhizome Rot Disease of Ginger (zingiber Officinale Rose) by Chemicals, Soil Amendments and Soil Antagonist

A. Ayub
Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701. Bangladesh

N. Sultana
Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701. Bangladesh

M. I. Faruk
Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701. Bangladesh

M. M. Rahman
Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701. Bangladesh

A. N. M. Mamun
Regional Spices Research Centre Bangladesh Agricultural Research Institute, Gazipur 1701. Bangladesh

Abstract/ Executive Summary:

Two field experiments were conducted at domar and sadar upzilla of Nilphamari district to find out an effective control measure against rhizome rot (Pythium aphanidermatam) disease of ginger (Zingiber officinale Rose). Each experiment consisted of nine treatments, where three fungicides (Ridomil, Metataf and Secure), three organic amendments (poultry refuse, mustard oilcake and saw dust burning) and two bio control agents (Trichoderma harzianum and T viride) were tested. Fungicides were used as seed treatment and soil drenching and organic materials and bio control agents were used as pre plant soil amendments. All the treatments significantly decreased the incidence and severity of the diseases and increased germination, tiller number and rhizome yield. The most effective treatment was seed treatment (0.2%) and soil drenching (0.2%) with Ridomil gold. Seed treatment and soil drenching with Secure (0.1 %) and soil amendment with poultry refuse (10 t/ha) were also found to be effective to control the diseases and to increase rhizome yield.

Keywords: Rhizome rot, Pvthium aphauidermotam. Fungicides, Organic amendment, Control, Trichoderma.

Location: Nilphamari area.

Start Date: 00-00-2005

End Date: 00-00-2005

Program Area: Pest Management

Commodity: Ginger

Objectives:

To identify a suitable control method against rhizome rot of zinger using fungicides, antagonist and organic amendments.

Methodology:

Two independent experiments were carried out at the farmer's field of Sadar and Demar upazillas of Nilphamari district during 2005. Farmer's field were selected where previously ginger was infected severely. Nine treatments were tested in the experiments: T₁ = Seed treatment + Soil drenching with Secure( mancozeb+ phenarnedon); T₂ = Seed treatment + Soil drenching with Ridomil gold ( mancozeb + metalaxyl); T₃ = Seed treatment + Soil drenching with Metataf ( 25% metalaxyl); T₄ =Trichoderma harzianum (60 g/m2); T₅ = T. viride (60 g/m2); T₆ = Mustard oil cake (MOC 1 ton/ha); T₇ = Poultry refuse (10 tons/ha); T₈ = Soil burning with sawdust (15 tons/ha) and T₉ = Control. Poultry refuse and mustard oil cake (MOC) were incorporated in to the soil 21 days before sowing rhizome. Trichoderma was added 7 days before and sawdust was burned one day before sowing. The experiments were laid out in RCBD with four replications. Local ginger variety was used and sown on 26th April The unit plot size was 2 X 2 m Row to row distance was 50 cm and rhizome to rhizome distance was 25 cm. Each plot had four rows and in each row eight seed rhizomes were sown. Apparently healthy rhizomes were treated with fungicide before sowing. Rhizomes were dipped in solution of Ridomil gold or Secure or Metalyxil for 30 minutes and then dried in shade and sown In the field. In control plots non treated seeds were sown. Soil drenching was started 60 days after planting at the time of diseases initiation and successive soil drenching was applied 6 times at 30 days interval. Data on germination(s), number of tillers per plant, plant infection (%), disease severity (0-5 scale) and yield were recorded. Cumulative data of two locations are presented. Germination was recorded after 30 days of planting. Number of tillers per plant was recorded from 10 randomly selected plants from each plot. Number of rhizome rot infected plant per plot was recorded after 100 days of sowing and continued up to maturity at 20 days interval. Disease severity was recorded using a 0-5 scale where, 0 = No infection on rhizome; I = 0.1 -5.0% rotting of rhizome; 2 = 5.1-15.0% rotting of rhizome; 3 = 15.1-30.0% rotting of rhizome; 4 = 30.1-60.0% rotting or rhizome; 5 = More than 60% rotting of rhizome. The weight of rhizome per plot was recorded and converted into per hectare yield. The data were analyzed statistically for ANOVA and treatment means were compared by Duncan's Multiple Range Test (DMRT).

Source of Information: The Agriculturists 7(1&1): 57-61 (2009), ISSN -1729-5211

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Seed treatment (0.2%) and soil drenching (0.2%) with Ridomil gold are the most effective treatments followed by Seed treatment (0.1 %) and soil drenching (0.1 %) with Secure, soil amendment with Poultry refuse (10 t/ha) and soil burning with Sawdust (15 t/ha) to control rhizome rot disease and to increase rhizome yield of ginger.

Knowledge Management: Journal