DEVELOPMENT AND PERFORMANCE EVALUATION OF AN IMPROVED SOYBEAN THRESHER
DEVELOPMENT AND PERFORMANCE EVALUATION OF AN IMPROVED SOYBEAN THRESHER
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Date
2012-02
Authors
NOMAU, AMADU
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Abstract
Due to the bulky nature of the soybean and since it has to be harvested with the stems,
the conventional threshers for maize and guinea corn cannot be used for the crop without
modifications. An improved soybean thresher has been developed and its performance
evaluation has also been carried out. From the results, threshing efficiency, cleaning efficiency,
mechanical grain damage, scatter loss and throughput capacity of 99%, 95%, 1.01%, 2.7% and
25.5kg/hr were obtained respectively. Also from the ANOVA statistical analysis carried out, it
shows that all the in-dependable variables i.e. feed rate, moisture content and speed have a
significant effects on the dependable variables i.e. Threshing efficiency, cleaning efficiency,
scatter loss, mechanical grain damage and throughput capacity. A comparison between the
performance of the improved soybean thresher and the old IAR soybean thresher was carried
out and it reveals that the difference between the cleaning efficiency of the new thresher and
that of the old thresher is significant at 1% probability level. It also shows that the difference in
the threshing efficiency of the new thresher with the old one is significant at 5% probability
level. This means that there is an improvement in the performance of the old I.A.R soybean
thresher by the improved one.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL,
AHMADU BELLO UNIVERSITY, ZARIA NIGERIA
IN PARTIAL FULFILMENT OF THE REQUIREMENT FOR THE
AWARD OF MASTER IN SCIENCE DEGREE IN
AGRICULTURAL ENGINEERING
DEPARTMENT OF AGRICULTURAL ENGINEERING.
AHMADU BELLO UNIVERSITY, ZARIA NIGERIA.
FEBRUARY,2012
Keywords
DEVELOPMENT, PERFORMANCE EVALUATION, IMPROVED SOYBEAN, THRESHER.