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Performance evaluation of some machines used for harvesting and threshing lentil crop under Egyptian conditions [electronic resource].

By:

Ibrahim S. Y

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Language: English Summary language: Arabic Description: p.319-339Other title:

تقييم اداء بعض الآلات المستخدمة فى حصاد ودراس محصول العدس تحت الظروف المصرية [Added title page title]

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Journal of agricultural research Tanta University, 2006 v.32 (2) [electronic resource].

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In: Journal of Agricultural Research Tanta Univeristy 2006.v.32(2)Summary: Performances of some harvesting machines (Self propelled mower- Rear mounted mower- Reaper) were evaluated during harvesting operation of lentil crop in terms of harvesting losses, fuel consumption, energy requirements and operation costs as a function of changing in forward speeds (1.9 - 3.0 - 3.9- 5.2) kmIh and seed moisture contents (10.05 - 14.52 - 27.11) %. Also, performance of threshing machine was evaluated in terms of unthreshed seeds, mechanical seed damage, total seed losses, fuel consumption, specific energy and operation costs as a function of changing in drum speeds (11.47 - 15.29 - 19.12 - 22.94 mls) .with previous seed moisture contents. The obtained results revealed the following points: 1- Mechanical harvesting by reaper always gave the lowest values of the seed losses followed by self- propelled mower and rearmounted mower for harvesting lentil crop. 2- Optimum forward speed of harvesting machines ranged from 3.0 to 3.9 kmJh, with seed moisture content of 14.52 %. These conditions are considered the proper for harvesting lentil crop. 3- Optimum drum speed of threshing machine ranged from 15.29 to 19.12 mls (400 - 500 r.p.m.) with seed moisture content of 10.05 %. These conditions are considered the proper for threshing lentil crop.

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Performances of some harvesting machines (Self propelled mower- Rear mounted mower- Reaper) were evaluated during harvesting operation of lentil crop in terms of harvesting losses, fuel consumption, energy requirements and operation costs as a function of changing in forward speeds (1.9 - 3.0 - 3.9- 5.2) kmIh and seed moisture contents (10.05 - 14.52 - 27.11) %. Also, performance of threshing machine was evaluated in terms of unthreshed seeds, mechanical seed damage, total seed losses, fuel consumption, specific energy and operation costs as a function of changing in drum speeds (11.47 - 15.29 - 19.12 - 22.94 mls) .with previous seed moisture contents. The obtained results revealed the following points: 1- Mechanical harvesting by reaper always gave the lowest values of the seed losses followed by self- propelled mower and rearmounted mower for harvesting lentil crop. 2- Optimum forward speed of harvesting machines ranged from 3.0 to 3.9 kmJh, with seed moisture content of 14.52 %. These conditions are considered the proper for harvesting lentil crop. 3- Optimum drum speed of threshing machine ranged from 15.29 to 19.12 mls (400 - 500 r.p.m.) with seed moisture content of 10.05 %. These conditions are considered the proper for threshing lentil crop.

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