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Efficacy of Fungicides in Controlling Leaf Blotch of Turmeric

M. A. Wadud
Plant Pathology Division, BARI

K.M. Khalequzzaman
Plant Pathology Division, BARI

Rumman Ara
Plant Pathology Division, BARI

Abstract/ Executive Summary:

The experiment was conducted in Spices Research Centre, Shibgonj, Bogra during April 2013 to February 2014 to find out the effective fungicide(s) in controlling leaf blotch of turmeric. Eight fungicides namely Sunvit, Zineb, Ridomil gold, Bavistin, Antracol, Bordeaux mixture, Tilt-250 EC, Cabriotop along with control (water spraying) were included in this study. The highest disease infection (53.75%) per plot was found in control and the lowest disease infection (13.08%) per plot was found in Cabriotop treated plot. The lowest leaf area diseased (20.46%) and the highest leaf area diseased (50.87%) were observed in the control plot. The lowest disease grade (2.00) was found in Cabriotop treated plot and the highest disease grade (4.00) was recorded from control plot. The highest yield (37.33 t/ha) was found from Cabriotop treated plot and the lowest yield (24.48 t/ha) was observed in control plot.

Keywords: Fungicides, Leaf blotch, Turmeric

Location: Spices Research Centre, Shibgonj, Bogra

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Fungicide, Turmeric

Objectives:

;The present study was conducted with different fungicides to find out the effective fungicides in controlling leaf blotch of turmeric.

Methodology:

The experiment was conducted at Spices Research Centre, BARI, Bogra during the April, 2013 to February, 2014. Rhizomes of BARI Turmeric-1 were planted on 22 April, 2013 in 4 m x 2.4 m sized plot sized with 60 cm x 25 cm spacing. The design was RCBD with three replications. The treatments were T₁= Sunvit, T₂= Zineb, T₃= Ridomil Gold, T₄= Bavistin, T₅ = Antracol, T₆ =Bordeaux mixture, T₇= Tilt-250 EC, T₈= Cabriotop and T₉= control (no spraying).The soil was sandy-loam in texture. The land was fertilized with cowdung, N, P, K, S and Zn at the rate of 5 t/ha, 100, 36, 85, 20 and 2.0 kg per hectare, respectively. The entire quantity of cowdung, P, S, Zn and K were applied as basal dose. Half of N was applied at 50 days after planting. Remaining N and K was applied as top dress in two equal splits at 80 and 120 days after planting. Fungicides were used only as foliar application. Four foliar sprays were done at 110, 125, 140 and 155 days after planting beginning first appearance of the disease symptoms. Data were recorded at 15 days after application of different spraying. Weeding was done at 15, 30, and 45 DAE. Three earthing up were done following weeding. Two irrigation were done at 16 May and 16 October, 2013. Data on number of leaf blotch infected plants/plot, percent disease infection/plot, percent disease infection/plant, percent leaf area diseased, disease grade (0-5 scale) and yield (t/ha) were recorded. Harvesting of the crop was done on 19 February 2014. The collected data were statistically analyzed and the mean values were compared by Duncan’s Multiple Range Test (DMRT) with 5% level of significance.

Source of Information: Annual Research Report, Plant Pathology Division, BARI--2013-14

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The lowest (13.25) number of leaf blotch infected plants/plot was found in Cabriotop treated plot and the highest (36.00) number of leaf blotch infected plants/plot were found in control plot. The leaf area diseased was lowest (20.46%) in Cabriotop treated plot which was not statistically similar to all other fungicides, while it was highest (50.87%) in control plot. The highest disease grade (4.00) was recorded in control plot and the lowest (2.33) was found in Cabriotop treated plot. The result indicated that to some extent all the applied fungicide reduced disease over control. Application of different fungicides had significant effect on rhizome yield of turmeric. The highest yield (37.33 t/ha) was obtained from Cabriotop treated plot which was statistically similar to Zineb, Ridomil gold and Tilt-250 EC, and the lowest yield (24.48 t/ha) was found in control plot. The highest gross return (Tk. 559950 /ha), net returned (Tk. 401120/ha) and benefit cost ratio (3.52) was obtained from Cabriotop treated plot which was followed by Zineb, Tilt-250 EC and Ridomil gold. Among the fungicides Cabriotop was effectively reduced the leaf blotch disease with highest BCR.

Knowledge Management: Report/Proceedings