• Register
  • Login

Kirkuk University Journal for Agricultural Sciences (KUJAS)

  1. Home
  2. Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights

Current Issue

By Issue

By Author

By Subject

Author Index

Keyword Index

Related Links

About Journal

FAQ

News

Journal Metrics

Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights

    Authors

    • Zhyar Burhan Abdulla 1
    • Saefaddin Hassan Mohammed 2
    • Abdulla Fathi Youns 3
    • Momtaz Isaak 4

    1 University pf Sulaimani

    2 Field Crops and Medicinal Plant Department/College of Agricultural Engineering Sciences/ Salahaddin University/Erbil/Iraq

    3 Department Of Flied crop & Medicinal plant, College of Agricultural Engineering Sciences , University of Salahaddin , IRAQ.

    4 Agricultural Machines and Equipment, Collage of Agriculture , University of tikret, Iraq

,

Document Type : Research Paper

10.58928/ku25.16426
  • Article Information
  • References
  • Download
  • Export Citation
  • Statistics
  • Share

Abstract

Factorial experiment used (RCBD) with three replication conducted in the wheat field in the Qoritan region of Erbil State, Kurdistan, Iraq, for the study the effect of cutting, threshing, separation and cleaning units, also measuring the total losses and combine performance efficiency under two speed 2.5 and 3.5 km.h-1 and two higher cutting 10, 20 cm. combine speed 2.5 km.h-1 lower losses in threshing, separation, cleaning units and total loss. While cutting unit and efficiency were higher. Increasing higher cutting gave losses 3.60%, 2.99%, 0.24% for cutting, threshing, separation and cleaning, respectively. total losses was 6.83% while combine efficiency was reduced with speed. Increasing higher cutting from 10cm to 20cm causes increase threshing unit loss 2.25% to 3.72% , and separation unit loss 0.20% to 0.35%. more than, increasing the total losses from 6.32% to 7.42% while the rest of parameters study were reducing. .
نفذت تجربة عاملية واستخدم تصميم القطاعات العشوائية الكاملة وبثلاث مكررات في حقل قمح في منطقة (قوريتان) في مدينة اربيل– كردستان العراق، لغرض دراسة حساب خسائر وحدات حاصدة القمح متمثلة بودات القطع والدياسة والفصل والتنظيف وكذلك حساب الخسائر الكلية وكفاءة الآداء تحت تأثير سرعتين 2.5 و3.5 كم. ساعة-1 و أرتفاعين للقطع 10 و20 سم. سجلت سرعة 2.5 كم . ساعة-1 أقل معدل للخسائر في وحدات الدياسة والفصل والتنظيف والحسائر الكلية، بينما وحدة القطع وكفاءة الاداء كانتا عالية. زيادة أرتفاع القطع من 10 الى 20 سم أعطى معدل خسائر3.60 % و2.99 % و0.24 % لكل من وحدة القطع والدياسة والفصل والتنظيف على التوالي. الخسائر الكلية للحاصدة 6.83 % وكفاءة الاداء أنخفضت مع انخفاض سرعة الحاصدة. زيادة ارتفاع القطع من 10 الى 20 سم ادى الى زيادة خسائر وحدة الدياسة من2.25 % الى 3.72 %، وخسائر وحدة الفصل من 0.20 % الى0.35 %، أضافة الى ذلك زيادة الخسائر الكلية من6.32 % الى7.42 % بينما بقية الصفات المدروسة أنخفضت.

Keywords

  • Combine
  • Reel
  • Wheat
  • threshing
  • Cleaning
  • losses

Main Subjects

  • Agricultural machinery and Equipment
  • XML
  • PDF 504.7 K
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
References
  • Nawi, N.M., G. Chen, and D. Zare, The effect of different climatic conditions on wheat harvesting strategy and return. Biosystems Engineering, 2010. 106(4): p. 493-502.

  https://doi.org/10.1016/j.biosystemseng.2010.05.015

  • .Masek, J., P. Novak, and A. Jasinskas, Evaluation of combine harvester operation costs in different working conditions. Engineering for rural development, 2017. 16: p. 1180-1185.

 DOI:10.22616/ERDev2017.16.N254

  • Steponavicius, D., S. Petkecius, and R. Domeika, Determination of rational values of inclination angles of straw walker sections. Engineering for Rural Development, 2011. 26: p. 27.05-76-81.

 https://www.iitf.lbtu.lv/conference/proceedings2011/Papers/014_Stepanovicus.pdf

  • .Junsiri, C. and W. Chinsuwan, Prediction equations for header losses of combine harvesters when harvesting Thai Hom Mali rice. Songklanakarin Journal of Science and Technology, 2009. 31(6): p. 613-620.

https://www.thaiscience.info/journals/Article/SONG/10614971.pdf.

  • Šotnar, M., et al., Influence of the Combine Harvester Parameter Settings on Harvest Losses. Acta Technologica Agriculturae, 2018. 21(3): p. 105-108.

https://sciendo.com/article/10.2478/ata-2018-0019

  • H Pishgar-Komleh, S., A. Keyhani, M. Mostofi-Sarkari, and A. Jafari, Application of response surface methodology for optimization of picker-husker harvesting losses in corn seed. Iranica Journal of Energy & Environment, 2012. 3(2).

DOI: 10.5829/idosi.ijee.2012.03.02.0027

  • Kutzbach, H. and G. Quick, 1.6. Harvesters and Threshers Grain. CIGR Handbook of Agricultural Engineering: p. 311.

https://arxiv.org/abs/1105.0677.

  • Špokas, L. and D. Steponavičius, Fuel consumption during cereal and rape harvesting and methods of its reduction. 2011.

doi: 10.17221/16/2015-RAE

  • Abdalla, O.A., M.H. Dahab, M.M. Musa, and S. Eltayeb, Influence of Combine Harvester Forward and Reel Speeds on Wheat Harvesting Losses in Gezira Scheme (Sudan). International Journal of Scientific Advances, 2021. 2(2): p. 177-82.

  DOI:  10.51542/ijscia.v2i2.17

  • Karaj, I., Investigation on grain losses of the JD 1165 combine harvester equipped with variable pulley and belt for forward travel. American Journal of Food Technology, 2011. 6(4): p. 314-321.

DOI: 10.3923/ajft.2011.314.321

  • Isaac, N.E., et al., Combine harvester econometric model with forward speed optimization. Applied Engineering in Agriculture, 2006. 22(1): p. 25-31.

DOI:10.13031/2013.20184

  • Zhang, Y., et al., Development and testing of a grain combine harvester throughput monitoring system. Computers and Electronics in Agriculture, 2022. 200: p. 107253.

https://doi.org/10.1016/j.compag.2022.107253

  • Špokas, L., V. Adamčuk, V. Bulgakov, and L. Nozdrovický, The experimental research of combine harvesters. Research in Agricultural Engineering, 2016. 62(3): p. 106-112.

http://www.isfae.org/scientificjournal.php

  • .Chen, D., F. Kang, Q.Y. Zhu, and S.M. Wang, Study on combine harvester speed control based on optimum threshing power consumption model. Applied Mechanics and Materials, 2012. 130: p. 1911-1914.

DOI:10.4028/www.scientific.net/AMM.130-134.1911

  • Modak, S. and H. Raheman, Model based evaluation and validation of high-speed cutting system for paddy crop using combine harvester. Journal of Biosystems Engineering, 2023. 48(1): p. 13-25.

DOI:10.1007/s42853-022-00168-4

  • Liang, Z. and M.E. Wada, Development of cleaning systems for combine harvesters: A review. Biosystems Engineering, 2023. 236: p. 79-102.

  https://doi.org/10.1016/j.biosystemseng.2023.10.018.

    • Article View: 58
    • PDF Download: 74
Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 16, Issue 4 - Issue Serial Number 4
December 2025
Page 240-248
Files
  • XML
  • PDF 504.7 K
Share
Export Citation
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
Statistics
  • Article View: 58
  • PDF Download: 74

APA

Abdulla, Z., Mohammed, S., Youns, A., & Isaak, M. (2025). Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights. Kirkuk University Journal for Agricultural Sciences (KUJAS), 16(4), 240-248. doi: 10.58928/ku25.16426

MLA

Zhyar Burhan Abdulla; Saefaddin Hassan Mohammed; Abdulla Fathi Youns; Momtaz Isaak. "Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights". Kirkuk University Journal for Agricultural Sciences (KUJAS), 16, 4, 2025, 240-248. doi: 10.58928/ku25.16426

HARVARD

Abdulla, Z., Mohammed, S., Youns, A., Isaak, M. (2025). 'Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights', Kirkuk University Journal for Agricultural Sciences (KUJAS), 16(4), pp. 240-248. doi: 10.58928/ku25.16426

VANCOUVER

Abdulla, Z., Mohammed, S., Youns, A., Isaak, M. Measuring Losses of Wheat Harvester Units at Different Speeds and Cutting Heights. Kirkuk University Journal for Agricultural Sciences (KUJAS), 2025; 16(4): 240-248. doi: 10.58928/ku25.16426

  • Home
  • About Journal
  • Editorial Board
  • Submit Manuscript
  • Contact Us
  • Glossary
  • Sitemap

News

  • Kirkuk University Journal For Agricultural Sciences ... 2025-12-01
  • Kirkuk University Journal of Agricultural Sciences ... 2026-01-07

Newsletter Subscription

Subscribe to the journal newsletter and receive the latest news and updates

© Journal Management System. Powered by iJournalPro.com