Kirkuk University Journal for Agricultural Sciences (KUJAS)

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

https://doi.org/10.58928/ku25.16426
Volume 16, Issue 4 - Issue Serial Number 4
Autumn 2025
Page 240-248
Kirkuk University Journal for Agricultural Sciences (KUJAS)

Document Type : Research Paper

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

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
Subjects
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