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Effect of Different Soil Amendments for Controlling White Rot of Mustard

S. R. Sarker
Scientific Officer
Plant Pathology Division, ARS, Burirhat, Rangpur

A. K. Saha
Senior Scientific Officer
Plant Pathology Division, ARS, Burirhat, Rangpur

M. A. Mannaf
Chief Scientific Officer
ARS, Burirhat, Rangpur

Abstract/ Executive Summary:

An experiment was conducted at ARS, Burirhat, Rangpur during 2012-13 cropping season to evaluate seven different treatments for managing white rot of mustard. Treatments applied were sawdust burning, straw burning, seed treatment with Trichoderma inocula, tricho-compost-1, tricho-compost-2; poultry litter + 2 sprays of Rovral, mustard oilcake and control. Poultry litter application followed by 2 sprays of Rovral was found effective in controlling white rot disease and increasing yield of mustard with the lowest disease incidence (1.01%). The highest yield (1.73 t ha^-1) was found in the same treatment while the highest disease incidence (17.74%) and the lowest yield (0.66 t ha^-1) was obtained from control plots. Other amending materials reduced disease to some extend and increased yield compared to control.

Keywords: Soil amendments, White rot, Mustard

Location: Burirhat

Start Date: 17-12-2012

End Date: 00-00-2013

Program Area: Pest Management

Commodity: Mustard

Objectives:

To evaluate different soil amendment options for controlling White rot of mustard.

Methodology:

The experiment was conducted in a Sclerotinia infected field of ARS, Burirhat, Rangpur during Rabi 2012-13. The experiment was laid out in randomized complete block design with 8 treatments and 3 replications. Block to block and plot to plot distance was 1.5m and 1 m, respectively. Seeds of BARI Sarisha 14 was sown in 3 m x 2 m plot at 40 cm spacing on 17 November 2012. Weeding, irrigation and other cultural practices were done as and when necessary during the cropping period. Data was recorded on incidence and severity of white rot, yield and yield contributing characters of mustard. Different soil amendment arrangements were as follows: T₁: Sawdust burning (4-5 inch thickness); T₂: Straw burning (as required); T₃: Seed treatment with Trichoderma inoculum; T₄: Soil amendment with Trichocompost-1; T₅: Soil amendment with Trichocompost-2; T₆: Poultry litter (5 t ha^-1) + 2spray of Rovral(0.2%); T₇: Mustard oil cake (400kg ha^-1) and T₈: Control

Source of Information: Annual Report, Plant Pathology Division 2012-13, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Among the seven organic amendment options, poultry litter (5t ha^-1) + 2 spray of Rovral (T₆) performed best in disease reduction and increased yield. The lowest disease incidence (1.01%) and severity (0.59) was found in PL+2 sprays with Rovral treated from T₆. Other soil amendment practices also showed disease reduction compared to control but significant difference among the treatments was not found. The highest disease incidence (17.74%) and severity (4.52) was observed in control plots. The highest yield (1.73 t ha^-1) was obtained from T₆ which was statistically similar to the yield of Tricho-compost-1, Tricho-compost-2 and MOC treatment while the lowest yield (0.66 t ha^-1) was obtained from control treatment. Plant height and thousand seed weight showed no significant difference among the treatments.The highest number of pod plant^-1 (87.73) was recorded in T₆ and the lowest (64.20) in the control treatment.

Knowledge Management: Report/Proceedings