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Effect of Some Shade Trees and Soil Amendments on Rhizome Rot Disease of Ginger

N. Haque
M.S. Student
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur

S.M.M. Hossain
Professor
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

S.M.E. Hassan
Professor
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

A.T.M.S. Islam
Professor
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

Abstract/ Executive Summary:

Three experiments were conducted in the research field of Hajee Mohammad Danesh Science and Technology University, farmers’ field of Dinajpur and Panchagarh during April 2014 to February 2015 for the management of rhizome rot of ginger. In the first experiment, ginger was grown in the soil amended with cow-dung, compost, mill ash and poultry litter. The compost treatment enhanced plant growth and healthy plants by reducing the disease severity of ginger. Higher yield of ginger was obtained with compost treatment which increased the total rhizome yield of about 1.66% more than the control plot. In the second experiment, ginger was planted in shading condition under neem, mango, litchi and palm tree. Ginger planted under neem tree showed better plant growth, and decreased the incidence and severity of rhizome rot of ginger. Rhizome yield was found higher in all the shading conditions compared to control condition. The highest yield was recorded under neem tree treated plot. In the third experiment, ginger was cultivated under some creepers (bitter gourd, ridge gourd and snake gourd) to observe the shading effect on rhizome rot of ginger. Shade of bitter gourd gave better plant growth and lower disease incidence and severity of rhizome rot of ginger. Consequently, the highest rhizome yield was found under bitter gourd treated plot. It was concluded that rhizome rot of ginger can be minimized by growing in the compost treated plot, under neem tree or bitter gourd creeper.

Keywords: Rhizome rot, Ginger, Soil amendment, Shade trees

Location: Dinajpur.

Start Date: 00-04-2014

End Date: 00-03-2015

Program Area: Pest Management

Commodity: Diseases, Ginger

Objectives:

To find out the effect of soil amendment and shading effect for reducing the severity of rhizome rot of ginger.

Methodology:

Three experiments were conducted during April 2014 to March 2015 season. The seed rhizomes used for the present study was collected from local market of Dinajpur. Apparently disease free healthy rhizome was selected for the study. Recommended dose of fertilizer and manure suggested by Spices Research Center, BARI, Gazipur were applied in the experimental plot. Cow-dung was applied in the soil at the rate of 10 t/ha during land opening. Urea, TSP and MP at the rate of 150, 350 and 300 kg/ha, respectively was applied. Full dose of TSP and MP were applied during final land preparation. Half of urea was used as top dressing 50 days after sowing of rhizome. Rest half of urea was applied in two installments at 80 days and 110 days after sowing as top dressing. The experiment was conducted in the farmer’s field near HSTU campus, Dinajpur during April 2014 to March 2015. The treatments used in the experiment were T₀ = control, T₁= Soil amendment with mill ash, T₂= Soil amendment with poultry litter, T₃= Soil amendment with compost, T₄= Soil amendment with cow-dung. Cow- dung and poultry litter were incorporated in experimental plot 21 days before sowing at the rate of 2 ton per hectare. Mill ash and compost were incorporated after land preparation in the experimental plot at the rate of 2 ton per hectare. Recommended dose of fertilizer for ginger were applied during land preparation and intercultural operations were done on need basis. After land preparation, pre-sprouted seed (rhizome) was planted on 9th April, 2014 at the rate of 1600 kg/ha. Mulching was done only one time to check weed emergence and conserve moisture during the latter part of the cropping season with rice straw @10 t/ha. The unit plot size was 2.75 × 2.50m, block to block and plot to plot distance was maintained 1.0 and 0.5 m, respectively. Spacing of row to row (within plot) and seed to seed (within row) was 0.70 m and 0.25 m, respectively. The design of experiment was RCBD with three replications. Data were collected four times at an interval of one month starting from the emergence to harvesting of the crop by selecting 10 plants randomly from each plot on the parameters like number of rhizome rot infected plant/plot, percent disease severity of plants using the formula of Johnston (2000). Percent disease severity of rhizome was recorded after harvesting by using 0-9 scale, where 0 = No infection or discoloration on the rhizome, 1 = Rot in 10% area of the rhizome, 3 = Rot in 11-30% area of the rhizome, 5 = Rot in 31-50% area of the rhizome, 7 = Rot in 51-75% area of the rhizome and 9 = Rot in more than 75% area of the rhizome. After harvest of crop, the rhizomes weight were recorded in each plot and it was converted into yield ton per hectare. Collected data were analyzed statistically using the MSTAT-C computer package program. Means were compared by Duncan’s Multiple Range Test (DMRT). The experiment was conducted in the farmers’ field of, Mareya village, Boda Upazilla, Panchagarh district. Four field was selected for the experiment where palm tree, mango tree, neem tree and litchi orchard were established by the farmers of Panchagarh district. Ginger was planted under tree as in the treatments T₀ = Control (Ginger planted in open sunny field), T₁ = Shade under palm tree (Phoenix roebelenii), T₂ = Shade under mango tree (Mangifera indica), T₃ = Shade under neem tree (Azadirachta indica), T₄ = Shade under litchi tree (Litchi chinensis). The experiment was conducted in the research field, Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur. Ginger was planted under creeper as in the treatments T₀ = Control, T₁ = Shade under corolla (Momordica charantia), T₂ = Shade under jhingha (Luffa acutangula), T₃ = Shade under chicingha (Trichosanthes anguina). Creeper seed was sown after two month of ginger planted in the field. A top fence (Macha; made of bamboo) was made at 1.5 meter height over the ginger plant to allow the growth of creeper properly and to provide shade on ginger. Necessary cultural operations, fertilization, data collection and analysis of data of experiment 2 and 3 were done as in experiment 1.

Source of Information: Int. J. Sustain. Crop Prod. 10(2): 62-67 (May 2015)

Article Link (Online Journal): http://ggfjournals.com/e-journalsarchive

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From this study, it may be concluded that ginger may be cultivated with compost as soil amendment for reducing rhizome rot of ginger. The study also indicated that shading effect of neem tree, litchi tree and bitter gourd creeper could reduce the rhizome rot of ginger and increase the yield.

Knowledge Management: Journal