EFFECT OF HARROW  TYPE AND DRILL SEEDER S SPEED ON SOME MACHINERY UNIT TECHNICAL ,ECONOMICAL AND ENERGY REQUIREMENT PARAMETERS.

A.Z. AL Hashimy, Laith

	EFFECT OF HARROW TYPE AND DRILL SEEDER S SPEED ON SOME MACHINERY UNIT TECHNICAL ,ECONOMICAL AND ENERGY REQUIREMENT PARAMETERS.
The Iraqi Journal of Agricultural Science
Article 1, Volume 41, Issue 6, 2010, Pages 114-124
Author
Laith A.Z. AL Hashimy
Abstract
An experiment was conducted on a farm belong to College of Agriculture – University of Baghdad to the year 2009 in a silty-clay soil , New Holland tractor with two type of Harrow’s and drill seeder was used. Treatments were laid out using split-plot with randomized complete block design in three replicates .The study consist of two factors : first factor was Harrow Type with two Level’s (Rotary Harrow and Spring Spike tooth Harrow) which represented Main Plot’s , second factor was drill seeding speed with three Levels (6.28, 7.61, 11.43)km/hr, which represented sub plot’s .Some of machinery unit performance parameters were determined which include : slippage percentage , Effective field capacity , Field efficiency and fuel consumption , Total operation cost of machinery unit (Tractor with drill seeder) was calculated , and as well as machinery unit Energy requirement .Results obtained indicated that drill seeder with spring spike tooth Harrow showed significant superiority in comparison with the drill seeder with rotary harrow in recording lower slippage percentage (8.453%), higher value effective field capacity (0.8233m/hr), higher value of field efficiency (68.128%), Lower value of Fuel consumption (10.194L/ha), Lower Total operation coast of machinery unit (18322 ID/ha), and Lower value of machinery unit Energy requirement (36.87 kw.hr/ha). Third drill seeding speed significant superiority in comparison with other speeds in recording higher value of Effective Field capacity (1.0806 ha/hr), Lower value of Fuel consumption (8.112L/ha), Lower value of total operation cost’s (13593 ID/ha) and Lower value of machinery unit Energy requirement (22.40 kw.hr/ha), It can be concluded that drill seeder with spring spike tooth harrow on third speed showed significant superiority in comparison with drill seeder with rotary harrow and other speeds in recording best of machinery unit technical,economical and energy requirement parameters,And therefore it can be recommended using the drill seeder on third speed after harrowing by spring spike tooth harrow .

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