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THE EFFECT OF ADDED WEIGHTS TO TRACTORS REAR WHEELS AND PLOW TYPE IN SOME INDICATORS OF PERFORMANCE OF MACHINE UNIT | ||
| AL-TAQANI | ||
| Article 1, Volume 23, Issue 2, 2010, Pages 220-228 | ||
| Abstract | ||
| Afield experiment was conducted to evaluate the effect of added weights to rear wheels of tractor ،plow type on some performance indicators of machine unit of silty clay loam soil at the experimental field of the College of Agriculture University of Baghdad .Two types of plows: mold board plow and chisel plow ,three added weights: standard weights (iron discs ),adding water to the wheels, and no weights added were used under constant velocity of 3.96 km/hr. The performance indicators of machine unit were studied in this research including: percentage of slippage, practical productivity, percentage clod soil with a diameter greater than 10 cm, fuel consumption.The experiment was executed according to a split design under randomized complete block design (RCBD) with three replications .least significant differences (L.S.D) were used to compare means of treatments at 0.05 level. The results were as follows: Additions of standard weights and water to rear wheels of tractor a significant decrease in values of percentage of slippage , percentage of soil clod with a diameter greater than 10 cm, and significant increase in values practical productivity ,where there was no significant effect on fuel consumption values . Chisel plow showed a significant superiority in comparison with all treatments ,yielding higher values of practical productivity ,and lower values of fuel consumption, percentage of soil clods (< 10 cm ø) .while the mold board plow had a significant effect in lowering percentage of slippage. Statistical analysis showed a significant interaction between studied factors ,and they were as follow Higher values of practical productivity were obtained under chisel plow and addition of water. | ||
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