Abdulrahman, R. A. 1992.Studying the effect of the sowing speed on some requirements of sowing by using grain drill "SZS - 2.1" with the tractor "Antar 71". M.Sc.Thes.,Fac. Agric., Baghdad Univ., Iraq. : 2.
Abu Sabaa, A.; Karim.1980.Farm machinery.Dar Al-Maareffor Printing and Publishing. Egypt.
Aday, S. H.; S. I. Najm and M. S. Hmmood .2008. Fuel consumption per unit area and its relation with engine speed and forward speed for the tractor. J. Iraqi Agric., 8(1):168-180.
Ahmed, N. Y. N.; A. M.Munther .1987.Soil fertility and fertilizers. Trans. Ministry of Higher Edu.and Sci. Res.,Basrah Univ., Iraq. : 9.
Al-Aridhee, J. K. Z .2011. Effect of tractor’s type, speed and tillage depth in some technical indicators of machine unit’s and physical characteristics of the soil. M.Sc. Thes.,agric. Mach. and equip. Dep., Fac. Agric., Baghdad Univ., Iraq.: 32 - 34.
Al-Izzi, K. H. A. 2004.Effect of germination irrigation depth and sowing and tillage in wheat crop and its components under pivot sprinkler irrigation system. M.Sc. Thes., Soil and WaterDep., Fac. Agric., Baghdad Univ., Iraq.: 49.
Al-Janobi, A. A.; A. M. Zeinldin. 1997. Development of a soil bin test facility for soil tillage tool interaction studies. Fac. Agric., KingSaad Univ., Kingdom of Saudi Arabia, Agric., Res. Cen., No 72.: 4.
Al-Janobi, A.A., 2000. Data – acquisition system to monitor performance of fully mounted implement. J. Agric. Eng. Res.,Vol.75.: 167– 175.
Al-Khafaji, A. J. J. 2006.Evaluation of the grain drill performance efficiency in two different soils. Ph.D. Thes.,Agric. Mech. Dep., Fac. Agric.,Baghdad Univ., Iraq.:115-159
Al-Mkhiol, F. F. M. 2005.The effect of the depths, sowing speeds and drill type in growing and wheat yield. M.Sc. Thes., Agric. Mech. Dep., Fac. Agric., Baghdad Univ., Iraq.:26.
Al-Rajabow, S. A. 2002.Studying the grain drill’s performance indicators in the cultivation of barley crop. J. Iraqi Agric. 7 (6): 131- 136.
Al-Rawi,K.M.; M. K. Abdulaziz. 1980.Design and analysis of agricultural experiments,Directorate of Dar Al-Kotb for Printing and Publishing. Mosul Univ.,Ministry of Higher Ed.and Sci. Res.,Iraq.: 341.
Al-Sabbagh, A. A.; L. A. Z. Al-Hashemi and F. F. Al-Mkhiol .2012.Evaluate the performance efficiency of triple disc plow with New Holland tractor by using different disc tilt angles. Iraqi J. of Soil Sci.,12 (1): 105 - 115.
Al-Sharefy S. K. A.2003. A comparison between the effect of different tillage system in some soil physical properties and sunflower yields at the middle region of Iraq. M.Sc. Thes., Agric. Mech. Dep., Fac. Agric., Baghdad Univ.,Iraq.: 85 - 86.
Al-Sulaivany, A. M. S. 2005.Study the possibility of utilizing grain drill for sowing lentil crop in northern Iraq. M.Sc. Thes., Fac. Agric. and Forest. Mosul Univ., Iraq.: 30.
Al-Tahan, Y. H.; M. A. Hammeda and M. F. Abdelwahab.1991. Economic and management machinery and agricultural equipment. Ministry of Higher Ed. and Sci. Res., MosulUniv.,Iraq.: 378.
Anderson, W. K. and J. R. Garling. 2000. The Wheat Book - Principles and Practice. Agric. Western Australia Bul. 4443.: 39 – 52.
Awady, M. N.1987. Agricultural tractors. (In Arabic).Col. Agric., Ain-Shams Univ.,Egypt.: 100.
Awady, M. N. 2002.Engineering of agricultural machinery. (In Arabic).Col. Agric., Ain-Shams Univ.,Egypt.:154.
Awady, M. N.; M. M. Mubarak; A. M. Gindy and M. M. Hegazi. 2006. Introduction to agricultural engineering, Sowing machine section. (In Arabic). Col. Agric., Ain- Shams Univ.,Egypt. : 14-17.
A.S.A.E. standard .2000. Agricultural Machinery Management Data. ASAE D497.4,Am. Soc. of Agric. Eng., St. Joseph. MI 49085 - 9659. USA. : 350 – 357.
Desbilles, J. 2005. Seedling system draft measurement. Agric. Mach. Res. and Design center.Univ. South Australia.
Elmo, R. 1981. Predicting machine field capacity for specific field and operation condition. Trans ASAE. : 79 – 1029.
Embaby, A. T. 1985. Acomparison of the different mechanization system for cereal crop production. M.Sc.Thes., Fac. Agric. Cairo Univ.,Egypt.:23
Glanze, P. 1972. Technical Fundamentals of Grain - maize –Mec. Prod. in the Tropical and Subtropical Regions. Ed.Leipzig. Translated. German Democ. Rep., Liz. Nr. 600 / 47 / 72.: 9 -10.
Hanna, M.2002.Estimating the field capacity of farm machines. Iowa State Univ. Univ.Ext. File A3 - 24 April,: 4.
Hunt, D.R.2001. Cost determination in farm power and machinery management.10th ed. Iowa State Univ. press, Ames, Iowa.: 77 - 95.
Issct. 2004. Agricultural machinery costing methods and standard protocol. Agric. Eng. Sec.:1-12.
Jabour, H. A. 2010. Studyingof effect and interference soil moisture and plowing depth on the drag force resistance and total economic costs formachinery unit. Al-taqaniJ., 23 (2): 81 - 91.
Jadou, K.A.; A.Haider.2012. Effect of the sowing depth in properties of crop and components for six varieties of wheat. Iraqi J. Agric. Sci.,43 (1): 25-37.
Jasim, A. A.; K. M. Madlol. 2011. Field performance of a tillage implement equipped with liquid fertilizer applicator. 1st Nat. Agric. Cong. and Exposition on behalf of Ali NumanKirac with Inte. Participation. April 27-30, Eskisehir, Turkey .1(1): 1243 - 1255.
Kassar, F. H .2011. The effect of sowing speeds travelling gang angle of disc harrow range and tillage depth on some of the technical parameters for the machine unit and furrow dimensions. M.Sc. Thes., agric. Mach. and equip. Dep., Fac. of Agric., Baghdad Univ., Iraq.: 45 - 47.
Kepner, R.A.; R. Bainer and E.L.Barger. , 1982. Principles of farm machinery. 3rd Ed., AVI pub.Co., USA. :26 - 31.
Khalilian, A.T.; H.Garner; H.L.Musen; R.B.Dodd and S.A.Hale.1988. Energy for conservation tillage in coastal. Plain soil. Trans. ASAE, 31 (5): 1333-1337.
Madlol, K. M.2010. Using locally assembled equipment to inject liquid fertilizer under soil surface. M.Sc. Thes.,Agric. Mach. and equip. Dep.,Fac. Agric., Baghdad Univ., Iraq.: 58.
Madlol, K. M.; A. J. Abdulrazak.2012. Measuring the field performance efficiency of liquid fertilizer inject equipment manufactured locally and the increase of element nutritious and bulk density for inject soil. Iraqi J. Soil Sci., 12 (1): 116 - 127.
Mohammed, M. A. 2005. Studying the possibility of utilizing some crop seeds drill in planting chickpeas. . M.Sc. Thes., Fac. Agric. and Forest. Mosul Univ., Iraq.: 42.
Zedan, B. A. 2006. Effect of some tillage systems, tillage depths and tractor speedson some performance parameters, soil physical properties and production of Indian pea crop (vigna radiate L.). M.Sc. Thes.,Agric. Mech. Dep.,Fac. Agric., Baghdad Univ.,Iraq.: 41.
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