Test and Evaluation of the Factors Affecting on the Freshly Harvested Peanut Threshing Machine Performance

Main Article Content

Jafar Abdi
Abdollah Golmohammadi
Gholamhossein Shahgholi
Adel Rezvanivand Fanaei
Mariusz Szymanek
Wojciech Tanas


Peanut is an important produce in the global food chain because of their high-quality oil and protein content. Due to the significant value of its production in Iran, a threshing machine was developed for high-quality harvesting, to reduce harvesting costs and labor effort. In the course of a number of field experiments to evaluate the performance of the machine, the rotational speed of the thresher was adopted at three levels of 150, 200, and 300 rpm. Other experimental factors included the distance of the concave from the thresher (2, 6, and 8 cm) and the product feeding rate of 750, 850, and 950 kg·h−1. Regarding the measurements, the threshing efficiency, the separation rate, and the percentage of the crushed product were calculated and evaluated. The results revealed that as the rotational speed of the thresher, the increment feeding rate of the product and the distance between the thresher and the concave grate increased, the thresher efficiency decreased. The maximum threshing efficiency of 95% was obtained at a rotational speed of 150 rpm and a distance of 2 cm. Also, with increasing the rotational speed of 300 rpm and a distance of 8 cm, the threshing efficiency decreased to 75%. The separation rate decreased intensely as the distance between the thresher and the concave increased. In addition, the separation rate decreases with increasing rotational speed of the thresher. At a rotational speed of 150 rpm and a distance of 2 cm, the separation rate was 96%, but the separation rate decreased to 76% as rotational speed increased to 300 rpm and distance increased to 8 cm. With increasing rotational speed and feeding rate, the percentage of crushed pods increased. The maximum of 16% was obtained at a rotational speed of 300 rpm, a feeding rate of 950 kg·h−1 and a distance of 2 cm.

Article Details

How to Cite
Abdi, J., Golmohammadi, A., Shahgholi, G., Rezvanivand Fanaei, A., Szymanek, M., & Tanas, W. (2022). Test and Evaluation of the Factors Affecting on the Freshly Harvested Peanut Threshing Machine Performance. Agricultural Engineering , 26, 167-185. https://doi.org/10.2478/agriceng-2022-0014


Abdi, R., Jalali, A. (2013). Mathematical model for prediction combine harvester header losses. International Journal of Agriculture and Crop Sciences, 5(5), 549-552.

Aboegela, M.., Mourad, K. A. (2021). Development a Locale Thresher Machine for Separating Peanut Crop. Journal of Soil Sciences and Agricultural Engineering, 12(3), 131-135.10.21608/jssae.2021.158665

Ali, K. A. M., Zong, W., Md-Tahir, H., Ma, L., Yang, L. (2021). Design, Simulation and Experimentation of an Axial Flow Sunflower-Threshing Machine with an Attached Screw Conveyor. Applied Sciences, 11(14), 6312.10.3390/app11146312

Anco, D. J., Thomas, J. S., Jordan, D. L., Shew, B. B., Monfort, W. S., Mehl, H. L., Campbell, H. L. (2020). Peanut Yield Loss in the Presence of Defoliation Caused by Late or Early Leaf Spot. Plant Disease, 104(5), 1390-1399.10.1094/PDIS-11-19-2286-RE32223639

Bello, B., Tokan, A., Jiya, D. J., Musa, A. I. (2019). Design Model of Automated Groundnut Threshing Machine. Majlesi Journal of Mechatronic Systems, 8(1), 19-24.

Dobreva, I. D., Ruiz-Guzman, H. A., Barrios-Perez, I., Adams, T., Teare, B. L., Payton, P., Hays, D. B. (2021). Thresholding analysis and feature extraction from 3D ground penetrating radar data for noninvasive assessment of peanut yield. Remote Sensing, 13(10), 1-24.10.3390/rs13101896

El-Awady, M.., Yehia, I., Ebaid, M., Arif, E. (2009). Development of Rice Cleaner for Reduced Impurities and Losses. Agricultural Mechanization in Asia, Africa and Latin America, 40(3), 15-20.

Fu, J., Chen, Z., Han, L., Ren, L. (2018). Review of grain threshing theory and technology. International Journal of Agricultural and Biological Engineering, 11(3), 12-20.10.25165/j.ijabe.20181103.3432

Goel, A. K., Behera, D., Swain, S., Behera, B. K. (2015). Performance Evaluation of a Low-Cost Manual Sunflower. Indian Journal Of Agricultural Research, 43(1), 37-41.

Esfahani, A., Asghari, J., Naghizadeh, M., Rabiee, B. (2009). Effect of sulphur application on growth indices and yield of peanut (Arachis hypogaea L.). JWSS-Isfahan University of Technology, 13(48), 27-41.

Karlen, D. L., Birrell, S. J., Schumacher, T. E. (2014). Multilocation Corn Stover Harvest Effects on Crop Yields and Nutrient Removal. Bioengineering Researches, 7, 528-539.10.1007/s12155-014-9419-7

Khan, M., Chaudhry, A. H. (1990). Economics Of Wheat Threshers In Di Khan, NWFP (Pakistan). Economic, 73.

Pishgar-komleh, S. H., Keyhani, A., Jafari, A. (2013). Assessment and Determination of Seed Corn Combine Harvesting Losses and Energy Consumption. Elixir Agriculture, 54, 12631-12637.

Reddy, K. M., Kumar, D. V., Reddy, B. R., Reddy, B. S. (2012). Performance Evaluation of Groundnut Thresher for Freshly Harvested Crop. International Journal of Agricultural Engineering, 6(1), 67-70.

Senthilkumar, T., Manohar Jesudas, D., Asokan, D. (2017). Performance evaluation of self-propelled groundnut combine. Agricultural Mechanization in Asia, Africa and Latin America, 48(1), 76-80.

Singh, H., Verma, S. R. (1972). Development and performance of an experimental groundnut thresher. Journal of Agriculture Engineering, 9(1), 50-58.

Srinivasan, M., Nithya Sai, S., Alexander, A., Prabhakaran, N., Gokul, C., Visalaxi, G. (2021). Development of peanut separator and thruster. IOP Conference Series: Materials Science and Engineering, 1055(1), 12053.10.1088/1757-899X/1055/1/012053

Sudajan, S., Salokhe, V. M., Triratanasirichai, K. (2002). Effect of type of drum, drum speed and feed rate on sunflower threshing. Biosystems Engineering, 83(4), 413-421.10.1006/bioe.2002.0133

Vejasit, A., Salokhe, V. M. (2004). Studies on Machine-Crop Parameters of an Axial Flow Thresher for Threshing Soybean. Agriculture Engineering International, 6(1977), 1-12.

Vennela, B., Ramana, C., Ramana, M. V., Reddy, S. J., Kalleemullah, S., Kumari, K. L. (2018). Studies on Harvesting and Threshing Parameters of Available Tractor Operated Groundnut Digger-Shaker and Fresh Pod Thresher. International Journal of Current Microbiology and Applied Sciences, 7(11), 3517-3525.10.20546/ijcmas.2018.711.401