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2026, Vol: 33, Issue: 1
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Original Research 


Modification and Comparative Analysis of Performance of a Soybean Thresher

Abdullahi Saeed Hassan, Danladi Drambi Usman, Abdulwahab Durojaiye Ismail, Muhammad Hilal Kabir, Jamilu Mustapha Ahmad, Bala Gambo Jahun, Lawan Garba Abubakar.


Abstract
A crop thresher is an essential farm machinery that separates grain seeds from their stalks and husks. It plays a vital role in agriculture by significantly reducing the labor-intensive task of threshing by hand and postharvest loss. However, Nigerian soybean farmers face challenges with threshing the crop after harvest, particularly due to the toughness of the stalks. Many existing threshers tend to clog or cause high grain loss during operation, leading to significant waste, low efficiency, and high energy consumption. The study modified an existing soybean thresher prone to clogging during operation and evaluated its performance. Modifications were made to the hopper and cylinder drum. The modified machine was evaluated using the TGX 1448-2E soybean variety as the test crop. The results were analyzed statistically at a 95% confidence interval. The machine was subjected to three treatment variables – concave clearance (10,13 and 16 mm), feed rate (3, 4, and 5 kg/min), and cylinder speed (500, 600,700, and 800 rpm). The optimal performance of the modified thresher was achieved with a concave clearance of 13 mm, a feed rate of 5 kg/min, and a cylinder speed of 700 rpm. A two-sample t-test was performed to compare the threshing and cleaning efficiency of the two machines. Improvement in threshing and cleaning efficiency was achieved by 11.06 and 19.02% respectively. No record of clogging was observed on the modified thresher within the studied conditions.

Key words: Soybeans, Thresher, Modification, clogging.


 
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How to Cite this Article
Pubmed Style

Hassan AS, Usman DD, Ismail AD, Kabir MH, Ahmad JM, Jahun BG, Abubakar LG. Modification and Comparative Analysis of Performance of a Soybean Thresher. NJE. 2025; 32(1): 53-60.

Web Style

Hassan AS, Usman DD, Ismail AD, Kabir MH, Ahmad JM, Jahun BG, Abubakar LG. Modification and Comparative Analysis of Performance of a Soybean Thresher. https://www.njeabu.com.ng/?mno=234146 [Access: June 27, 2026].

AMA (American Medical Association) Style

Hassan AS, Usman DD, Ismail AD, Kabir MH, Ahmad JM, Jahun BG, Abubakar LG. Modification and Comparative Analysis of Performance of a Soybean Thresher. NJE. 2025; 32(1): 53-60.


Vancouver/ICMJE Style

Hassan AS, Usman DD, Ismail AD, Kabir MH, Ahmad JM, Jahun BG, Abubakar LG. Modification and Comparative Analysis of Performance of a Soybean Thresher. NJE. (2025), [cited June 27, 2026]; 32(1): 53-60.


Harvard Style

Hassan, A. S., Usman, . D. D., Ismail, . A. D., Kabir, . M. H., Ahmad, . J. M., Jahun, . B. G. & Abubakar, . L. G. (2025) Modification and Comparative Analysis of Performance of a Soybean Thresher. NJE, 32 (1), 53-60.


Turabian Style

Hassan, Abdullahi Saeed, Danladi Drambi Usman, Abdulwahab Durojaiye Ismail, Muhammad Hilal Kabir, Jamilu Mustapha Ahmad, Bala Gambo Jahun, and Lawan Garba Abubakar. 2025. Modification and Comparative Analysis of Performance of a Soybean Thresher. Nigerian Journal of Engineering, 32 (1), 53-60.


Chicago Style

Hassan, Abdullahi Saeed, Danladi Drambi Usman, Abdulwahab Durojaiye Ismail, Muhammad Hilal Kabir, Jamilu Mustapha Ahmad, Bala Gambo Jahun, and Lawan Garba Abubakar. "Modification and Comparative Analysis of Performance of a Soybean Thresher." Nigerian Journal of Engineering 32 (2025), 53-60.


MLA (The Modern Language Association) Style

Hassan, Abdullahi Saeed, Danladi Drambi Usman, Abdulwahab Durojaiye Ismail, Muhammad Hilal Kabir, Jamilu Mustapha Ahmad, Bala Gambo Jahun, and Lawan Garba Abubakar. "Modification and Comparative Analysis of Performance of a Soybean Thresher." Nigerian Journal of Engineering 32.1 (2025), 53-60. Print.


APA (American Psychological Association) Style

Hassan, A. S., Usman, . D. D., Ismail, . A. D., Kabir, . M. H., Ahmad, . J. M., Jahun, . B. G. & Abubakar, . L. G. (2025) Modification and Comparative Analysis of Performance of a Soybean Thresher. Nigerian Journal of Engineering, 32 (1), 53-60.


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