Ahmed, M. and Haffar H. (1993). Comparison of five tillage systems for cotton production in Rahad Scheme. A.M.A, 24 (2): 17-20.
ASAE (2003). FEB03 STANDARDS. ASAE EP 496.2. Agricultural Machinery Management. American Society of Agricultural Engineers, 367-372.
ASAE (2011). Agricultural machinery management data D497.7. In ASABE STANDARD 2011. (Ed.), ASABE. St. Joseph, MI, USA: American Society of Agricultural and Biological Engineers.
Belal M. and Dahab M.(1997). Effect of soil condition on a two wheel drive tractor performance, using three types of tillage implements. University of Khartoum, J. Agri. Sci, 5 (2): 1-22.
Bower C. (1985). Southeastern tillage energy data and recommended reporting. Trans. ASAE, 28 (3), 731-737.
Donnell H. (2001). Farm power and machinery management. Wiley, Technology & Engineering - pp368.
Kepner A., Bainer R. and Barger L.(1978) Principles of farm machinery, 3rd Edition. pp: 23-47
Morad M. and El-Shazly M. (1994). Effect of some operating parameters on rotary plow performance. Misr J. Agri. Eng., 11 (4): 1009-1020.
Robert D., Paul J. and Dale R. (2000). Field efficiency determination from spatial data. Paper number 001013. An ASAE meeting presentation.
Renoll E. (1981). Predicting machine field capacity for specific field and operating conditions. Trans. of the ASAE 24(l) 45-47.
Witney B. (1988). Choosing and using farm machines. Edinburgh, Land Technology Ltd, pp: 412.
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