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A Comparative Study on the Effect of Rice Threshing Methods on Grain Quality

MAK Miah
Senior Agril. Engineer
FMPHT Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh.

SB Siddique
Chief Agronomist
Bangladesh Rice Research Institute, Gazipur-1701,Bangladesh.

M Haroon
Senior Plat Physiologist
Bangladesh Rice Research Institute, Gazipur-1701,Bangladesh.

M A Hafiz
Agronomist
Bangladesh Rice Research Institute, Gazipur-1701,Bangladesh.

B C Roy
Agronomist
Bangladesh Rice Research Institute, Gazipur-1701,Bangladesh.

Abstract/ Executive Summary:

A comparative study was conducted to investigate the performance of four available rice threshing methods, namely, by pedal thresher, bullock treading, drum beating and manual treading on threshing output, grain damage percentage and unthreshed grain of paddy. Sixteen sets of data were analyzed and results thus obtained show significant difference (at 1 % level by LSD) among the treatments on threshing output (kg/h), damaged and unthreshed grain percentage. The study reveals that pedal thresher gave higher threshing output (103.4 kg/h) than other methods irrespective of rice varieties except Nizersail. Among the four threshing methods, manual treading performed better in respect to grain damage compared to other methods. Although the damage percentage of grain due to pedal threshing was higher than manual treading, it was not statistically significant.

Keywords: Different threshing methods, Performance, Grain damage, Unthreshed grain

Location: BRRI Regional Station, Comilla

Start Date: 00-00-1990

End Date: 00-00-1990

Program Area: Farm Mechanization

Commodity: Thresher

Objectives:

To make a comparative study on available existing rice threshing methods in terms of their suitability and efficiency

Methodology:

The four traditional existing threshing methods and four rice varieties were selected for the study. The experiment was conducted at the Comilla Regional Station of the BRRI during aman season in 1990. The rice varieties were: BR11, BR12, BR23 and Nizersail. The threshing methods were: bullock treading, pedal thresher, drum beating and manual treading. For this study, 20 bundles of paddy form each variety was taken at random. Three bullocks and two persons were engaged during animal treading. For the other three threshing methods, all operations were done by two workers also. Threshing time was recorded by a stop watch. The threshing capacity percent damage on grains and unthreshed grains were likewise recorded.

Source of Information: Agricultural Mechanization in Asia, Africa and Latin America, Vol.25, No.3, Summeu 1994, P:63-66

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study shows that threshing with a pedal thresher performed better compared to the other traditional methods in respect to threshing output, grain damage and unthreshed grains. This is an useful information for farmers

Knowledge Management: Journal